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Mercruiser knocking noise

Mercruiser knocking noise


It's on a wellcraft sportsman248 with a merc 5. specifications. When these multiple flames collide, they do so with explosive force that produces a sudden rise in cylinder pressure accompanied by a sharp metallic pinging or knocking noise. The result? A 6. 4l 3v ford: lincoln: 2005 mustang 2005 navigator 2004-2005 f-150 I warmed the engine up to change the oil and filter,restarted and it ran fine. - Answered by a verified Marine Mechanic Re: Knocking Noise My thought was it sounds like it only does it on one stroke. I'm getting a knocking and vibration noise from the alpha 1 O/D only when turning left or right. This noise typically occurs after piston rings are replaced due to the additional drag on the loose pin. The alarm beeps about every 3 seconds -- clearly longer than the double beep when the ignition is turned on, or right after an engine starts. service bulletin Gimbal Bearing Servicing on MerCruiser I Models We frequently hear reports where someone has replaced a gimbal bearing without replacing the cartridge. There is a knocking noise coming from the rear axle only when coasting with no load on the drive train, starting at about 35 mph down to about 5 mph.


Noise, such as the hearty rumble of a big VA, may sound cool but it's definitely not good for you. Service, parts, cost & recommendations from YourMechanic. No matter how you use your boat, ATK Marine engines will provide maximum performance & long-term durability. This is because its function is to sense vibrations caused by engine knock or detonation. The ticking noise, (sounds similar to a lifter) quits under a load. A squeaking noise is another symptom of a bad balancer. The bearing is selectively fitted to the cartridge during manufacturing and must remain together as a matched set. The majority of the work has been to improve the looks (badly oxidized) and fix the little mechanical/electrical problems that it had. A primary duty of oil is to lubricate the engine and prevent friction resulting from parts coming in contact with each other. GM produced a tech fact stating it was nothing to be alarmed about.


One is the light ticking sound originally reported. Sort of sounds like the same noise your prop makes when you try to spin it with the gearcase in gear. Just bought the boat. Turns out an improvement notice was issued to use a thicker anti roll bar (which comes with the bonded bushes). We recently bought a 1960's house in Houston, TX. But when putting it back on it makes no noise until I go to play something, then it makes this little knocking noise as if the sub is just turning on, but it makes it every 20 seconds or so. Was a little alarming. frank_king Noise at upper intake 454 Vortec. I have a video of another guys engine with the same knock as mine but his is much louder. This noise is loudest when the engine is under heavy load.


The second one is sort of like a knock - like the sound of light tap from a two by four piece of wood. . Want Answer 1. Knocking If you encounter a MerCruiser I-R/I-MR sterndrive with a U-joint knocking or vibrating problem when turning or trimming, the problem may be caused by excessive side-to-side play in the U-joint cross and bearing assemblies. Went out on the lake today,first time I put it on plane,I thought the power to the prop slipped,boat was running fine all day,on our way in, right at 2000 rpm started to hear knocking noise from engin compartment. what I have done so far is replace the u joints I checked the gimball bearing and it rotates with no drag the only thing left is the coupler any suggestions or another opinion? 3. a "knocking" noise could be your lifters. A "thunk" when you push the starting button means problems, even if your engine then seems to start normally. Noise at upper intake 454 Vortec. Noise from a loose piston pin will actually increase in frequency with the spark grounded.


In the case of even lower oil pressure, the sounds can be more like clanging or knocking. knocking sound in bravo iii outdrive, mercruiser chatter noise during turning, mercruiser inline 6 makeing thumping noise when trolling, mercruiser outdrive prop shaft clanking noise, mercruiser rattle when in neutral, outdrive making knocking noise in neutral but not in gear, top of bravo 3 makes noise when running engine out of the water Dreaded knocking noise in neutral from outdrive - Bravo 1 Many years of broken impeller pieces jammed up in Oil Cooler. Engine started making this noise when it overheated, we got debris covering the water intake on the outdrive. Shut her down, checked around the back of the engine thinking that the gear shift cable must be snagging on something but was all fine. check your oil and if it's full then you may need to think about either A year ago my boat slid off the trailer 4 ft from the water so I sent it to the marina and long story short the transom had a crack in it so at the tune of $5500 it was replaced and the outdrive and motor were taken off checked and put back on. Our certified mobile technicians come to you 7 days a week between 7 AM and 9 PM. When I turn off the system the noise continues for a few seconds, when the hard drive revs down. 0L—LOWER END ENGINE KNOCK AT HOT IDLE— TSB 11-7-1 BUILT ON OR BEFORE 2/14/2011 FORD: 2011 F-150 ISSUE Some 2011 F-150 vehicles equipped with a 5. A low rumble or knocking noise could be caused by a bad rod bearing on the crankshaft. A "knocking" sound is the most typical engine noise indicating a mechanical problem that can be fixed if diagnosed correctly and early.


Used the one from the kit. The noise may often be diagnosed as a collapsed lifter. It almost sounds like a conecting rod but we wont go there. When the end of the hose encounters the leaking gasses, you will hear it through the hose. The knock sensor is located on the engine block, cylinder head or intake manifold. Model SE116 replaces MerCruiser's Gen II I/O with Three (3) Year Unlimited Warranty. Merc took the bushes back and ordered the new bar. Prepare for a normal oil change, doing this yourself or at a oil change shop. The noise is very prominant at idle, especially from inside the car with the hood down and doors shut with windows up. Bohacz .


I headed back to dock and pulled the pump. A lot can be learned by listening to your engine, so if your car starts to change its tune, you should take heed. Worn valves can allow water to free flow in and out of a valve chamber and not be properly discharged from the pump. mercruiser 496 engine alarm sounds i have 04 496 mag that ran perfect for the season and i parked is 2 months ago and today i added fuel stablizer to the fuel and ran the engine. If the noise is a steady metallic rap, it may indicate a rod/rod bearing. Mercruiser 454 MAG/EFI 385P KNOCKING NOISE MarineEngine. com does not offer troubleshooting assistance or repair advice by email or by telephone. Since then we replaced the water impeller, housing and had an oil change. Otherwise this motor has been great. 0 mercruiser.


You may need to open the freezer door to clearly hear if the noise is inside or outside. They have larger diameter journals and will fit all MerCruiser drives including standard Bravo 1,2,3 drives but will not fit Bravo X/XR/XZ There may be specific problems plaguing boats in your region, such as weeds clogging water intakes or a shipment of bad gas. 3. I am no mechanic but I have never heard a knocking sound that is off and on like this. The knocking in my engine does not appear to change with load or RPM (other than the rate of knocking) and putting the engine into gear has no impact on the noise as well. I took it out for a test run and engine started making a clacking noise when I tried to go up on plane. Today I did some rewiring and started it up but now has a loud knocking sound,pulled the V/C's and found no bent P/R's and the lifters do seem to be pumping up as there was no excessive play in the R/A's. This is a well known knock called "injector nailing". A clattering noise from the engine can be an indication of low oil pressure. When I took it to get it winterized the mechanic said it sounded like it could be a couple of different issues.


Can you help me think of ways to figure out what the sound is coming from? It is intermittent. A bad gimbal bearing can crack your $3000 transom housing Sounds like there might be two different sounds coming from this engine. Make sure oil, filter, drain pan, Lucas, and flush are all ready. Knocking noise while coasting/decelerating/braking on 99' Integra (self. However she has always made a very audible whirring noise (not a clunking or knocking) as the drive goes close to either steering lock. My son had a 96 Blazer with the same engine, he bought it used. Particularly if it gets worse at lower engine speeds. Put the "plastic" end to your ear, and the tip to different parts of the engine. This weekend I put in a new pump and thermostat. Turned out the bolts on the starter were backing out, so the starter wasn't seating right.


Part by part, system by system, with a total design and engineering commitment to marine use. bearings. The Causes of Internal Engine Knock, and How to Eliminate it. 0 GM Mercruiser Outdrive Engine Noise. Anyone have any ideas? I don't think this has anything to do with it, but it If it's actually a "knock", and not a "ping", it's usually caused by excessive connecting rod bearing clearance caused by wear or lack of sufficient lubrication. The sound is repetitive and I know it's not a wire hitting a fan. Significant reductions in sound and vibration at the helm. The noise you hear is a knock that is heard towards the bottom of the engine. This noise is different from other noises that may begin to occur at 3219-4828 km (2000-3000 mi). ATK premium quality marine engines are designed & built specifically for boating.


I get a low knocking sound in my outdrive. check your oil and if it's full then you may need to think about either Relying just on a gauge or light, though, can be a problem because the sender can fail or the light can burn out. Posted by cola15 on Mar 30, 2010. Help!!!! I purchased this boat, 1996 Talari 201, 5. "I have a 1991 Bayliner 2655 with a Mercruiser 5. Mercury MerCruiser 350 MAG ECT Control System, Inboard 2015 Mercury Marine’s MerCruiser 350 MAG is one of the most prolific engine platforms used to propel vessels under 35’ (10. 4 Magnum? Observation: When underway (never on the trailer), at about 3000 RPMs, the Mercruiser engine alarm goes off for the port engine. Sounds like there might be two different sounds coming from this engine. Replacement sterndrives are precision engineered and extremely cost-effective; Drives are new, built to Mercruiser specifications, not remanufactured Pump inlet and discharge valves control the flow in and through the pump. Mercruiser Sterndrive 4.


I guess having 4 teenagers interesting noise. 0L V6 with knocking/tapping sound. I have a 85 Larson with a 3. engine knocking noise when accelerating is available in our digital library an online access to it is set Cummins Isx Engine For Sale, Mercruiser 470 Engine Oil Listen carefully to determine whether the knocking noise is coming from the inside or outside of the freezer. 3L. Noise is measured in decibels, on a scale from 0 (the least perceptible sound to the human ear) to 180. It's similar to the knocking noise that comes from the seat belt when it hits against the front seat. Noise dramatically decreased. Now I hear a knocking noise. The noise occurs in neutral, foreward and reverse and gets louder as I rev.


The engine is making a pretty loud knocking sound on the forward most cylinder, I pulled the spark plug out and the knocking is the piston beating the plug. With the weight of the engine placed in the stern, but with the stable tracking of inboard running gear, a V-drive proves ideal for generating the big wakes, steep ramps, smooth faces and clean alleys that wakeboarders have a jones for. I've heard of people saying this is something that could cause a knocking problem, but looking at mine I just don't see how. What is Engine Knocking? Knocking in your engine, also described as pinging, can mean one of several problems. Knocking sound in My Bravo II Outdrive. Drill down from the year, horsepower, model number and engine section to get an online inventory of genuine OEM and aftermarket Johnson Evinrude outboard parts. Exhaust flappers can sound like a rod knock and nearly as loud. The PCM uses this signal to alter the ignition timing and prevent detonation. If it sounds like a single knock, you (or your mechanic) can isolate the cylinder by disabling the spark or the fuel injector for each cylinder one at a time. figured it was the sleeve bushings.


GM 4. had the out drive submerged in a tank of water and after about five min of running the alarm came on. The 3 Most Common Engine Problems >> Engine knock can be caused by many things, however, some of the most common are as follows: The fuel in your car has too low of an octane rating. NOTE: If NOT Using MerCruiser Timing Tool: With engine running, set the scan tool or Marine Diagnostic Code Tool to the SERVICE MODE and follow manufacturer’s instructions. 0 4 cylinder Mercruiser makes a tapping/clacking sound. Just never liked knocking engines. Now I'm at around 500 hours and it sounds the same. I'm not boosting more than 8psi, which is the lowest I can go, and I've been babying the car since the noise got louder. Why would the power steering make noise even after fluid has been added? Power steering noise When the fluid is low and you add some, it may still need more after you run it for awhile. - Answered by a verified Marine Mechanic I have a 1989 4.


7 L, Alpha One-Gen II, about three months ago and have been working on it since I purchased it. While the most likely reason for a refrigerator to make a knocking sound is the compressor, the condenser fan might also make noise. Where do I begin troubleshooting? I have a tapping/knocking - Mazda Tribute question What Does It Mean If Your Engine Makes a Ticking Noise? A ticking engine is usually an indication of a problem with the valvetrain. Mercruiser or someone else) figured out that the 180 degrees was wrong. We sold the truck. up the engine. The Mercruiser Service Manual specific to your engine can be a valuable reference. If the sound doesn't change, look at parts other than the reciprocating ones. I could still hear a very slight knock but still loudest from the pump. 2-liter V-8 engine with unparalleled torque and acceleration to get you on plane quickly and smoothly.


These are our heavy duty MerCruiser #75832T1 universal joints. Skip to Step 3 if the sound is on the outside or coming from behind the freezer. … read more knocking sound in bravo iii outdrive, mercruiser chatter noise during turning, mercruiser inline 6 makeing thumping noise when trolling, mercruiser outdrive prop shaft clanking noise, mercruiser rattle when in neutral, outdrive making knocking noise in neutral but not in gear, top of bravo 3 makes noise when running engine out of the water Dreaded knocking noise in neutral from outdrive - Bravo 1 Many years of broken impeller pieces jammed up in Oil Cooler. This drivetrain How much does Grinding noise when key turns in ignition Inspection cost? Get an estimate instantly. 5 mph or less makes a horrible knocking sound. As you said earlier it's very hard to diagnose noises over the phone - this noise doesn't seem to fit under any of the usual causes I did find this link - don't know if info is correct - but #6 outlines procedures for identifying wrist / gudgeon pin looseness. Everything is good now, but I wanted to check for any other debris in the whole system so I removed the lower unit to check pickup tube and the area where you put ears on. It has developed a loud knocking/banging noise. Whether in single or twin-engine applications, this power plant has seen it all. Try and pin-point where the noise is coming from.


What could be causing the noise? – Lynda The easiest answer is that perhaps a spark plug has been Hi guys. Mercruiser Precision Parts keep your engines in good, safe operating condition. 2 months ago I got to put it back on the water and havent had any problem except the steering and a knocking sound. Shop our variety of Noise Yanmar Coupler Racing now! 1984 mercruiser electrical engine diagram 1984 Mercruiser Electrical Engine Diagram by World Publishing Company 1984 Mercruiser Electrical Engine Diagram Find Your Engine. Some noise can come from a worn camshaft. But V-drives aren’t just for tow boats. I had it at the local marine shop and they replaced the gimble bearing and the top bearings in the upper drive. Mercury Marauder Clunking or knocking noise from wheels Inspection at your home or office. After the engine warms up, the knocking goes away. Does this sound sound like worn cam bearings? If not, what exactly does worn cam bearings sound like? Thanks! Reverse goes smoother into gear but I'm still hearing the knocking/clicking sound before the gear kicks in.


The knocking goes away when I manually lock the torque converter. This may occur if the fan becomes clogged with lint, which reduces air flow and makes a clicking, knocking or whistling sound. By Ray T. Throttle up and it goes away, also out of the water on the ears, there is no knock at idle. 7 mercruiser with 292 hrs. Insist on ONLY Mercruiser Factory Parts! Was that a grumbling noise you heard? Did it get louder when you turned the wheel or trimmed up? Gimbal bearings run under severe stress and can fail. The more I talk to people and listen to other videos this dieseling knocking sound at idle appears to be normal. Your definitive guide to Grinding noise when key turns in ignition Inspection. 7 efi) any ideas? I was wondering if any of you guys ever had a knocking noise like the one in the link below? The engine is a Mercruiser 454 MAG/EFI 385HP. Hi all, I have an SE106 I purchased in 8/09.


This car uses mechanical diesel injectors with an internal spring. It's also a tapping noise. Engine ran fine at idle. It Got a problem with my 130HP mercruiser Alpha One i/0, It seems to be operating OK but making a low pitched grinding noise: When the trim is all the way down, it makes the noise, But, when you raise the trim slightly, the noise stops. Has anyone experienced a faint knocking noise coming from the back wheels when driving over low bumps or when making slight turns. and the ticking when accelerating and letting out of the gas is the same thing. As the injectors get older (about 100k miles or more), the spring gets weaker and and the knock you hear are the injectors pounding. Solution Remove each valve or set of valves and inspect for wear or debris. On 350 Mag MPI Model, engine RPM will automatically increase to a higher RPM. You do not have to increase it manually, as stated in the following steps.


The first being that the flywheel could be loose. A whole new sporty feel at the wheel. This sound is often most noticeable when the engine is at an even rpm–not accelerating or decelerating–and is often caused by a worn bearing or crankpin, misaligned connecting rod, or lack of oil. The key was missing on the motor. Valve train noises generally are loudest up to 1500 rpms. It has well over 150,000 miles on it and is now driven very hard. 2001 Mazda Tribute 3. ticking and / or knocking noise / startuptsb 06-19-8 rattle from engine—4. 7. Engine started making a noise that sounded to me like it was coming from the engine circulating pump.


When dealing with a bad harmonic balancer, getting it fixed as soon as possible is vital for car owners, since it can cause the engine catastrophic damage. Replacement Mercruiser Sterndrive Units available as Complete Unit or just the Upper or Lower Assembly. Since it has a 160 degree themostat, mercruiser says it should not go above 160 degrees, no matter what! Apparently starting sometime in 1995, Mercruiser Alpha 1's began having a problem. There is an insert I can hear a click when it does this. Looked inside for it, didn't find it. It will compare this information with its preset tables to identify a valid knock Had a knock when I bought it. The clanking noise is a warning that there is insufficient lubricant that could be caused by a defective oil pump. When I started back up I started hearing a grinding noise which sounds like it's coming from the sterndrive. (Figure 1) This should not be done under any circumstances. MechanicAdvice) submitted 4 years ago by TrueBlonde Like the title says, I'm hearing a knocking noise whenever my foot is not on the gas in my '99 Integra LS.


+ the status of the belt. Hearing a knocking noise when we put it in gear only. 7l motor with a 4 barrell carb and a Alpha One Stern Drive. 2 stories, the 2nd story is half bedrooms and half attic. the knock sensor does not make a noise when triggered, you are hearing a engine knock and the sensor is picking that up and retarding the advance as designed. Mercruiser guy take a look at it, might be a simple fix if it was assembled incorrectly after the impeller change. We kept the Blazer for 3 years, I sold it to a friend 3 years ago and he swears it is the best running vehicle he's ever owned. MerCruiser 165 1970-1977 Engine & Stern Drive by Serial Re: mercruiser 165 hp 4 cylinder I have this same engine in a 1988 Celebrity. Variation in the engine noise, called "hunting," could indicate impurities in the fuel, an air leak in the suction line, a clogging filter, a failing fuel pump, or a failing injector pump. If I keep the truck in this position and staying in V4 Mode the noise will continue forever until I give it a little more gas and it switches to V8 mode.


Only a single knock, not 1 per cylinder or anything. Knock sensor on Mercruiser 7. Now I've heard 2 stories (Well 3, if you count the "There's nothing wrong"). It has had a ticking noise in it since June or July. 3L MPI 220 HP - MERCRUISER MULTIPORT INJECTED (MPI) STERNDRIVE ENGINES. Hi, My 2008 Mercruiser 4. After the AC has been running a while, a loud noise like a gurgling or knocking, somewhat randomly but about 1-3 seconds apart starts coming from the drain pipe in the mud room (where the washing machine drain hooks into the wall). When I have it in my hand, I do the blow, suck on the valve thing, (I might have stepped in it with that one) ,and it seems to work as it should, no strange noises let alone a knocking noise. This condition can cause a loud knocking noise in the pump. A quick steady tap may indicate lifters or cam lobe, while a clatter may be loose/worn rocker arms.


You may also visit the Boat Motor Manuals section of our site to obtain a service manual. No metal in the gear lube either. Click to go to Engine Noise Diagnosis 102 We ship parts and engines worldwide!* MERCURY PARTS CAN ONLY BE SOLD AND SHIPPED TO ADDRESSES WITHIN THE UNITED STATES. When I give it light throttle, it gets louder, and until about 70 mph, it stays pretty pronounced. Not necessarily when the gears are engaged, in the water under power. If the noise goes away when you throttle up to about 1200-1500rpms, then its probably internal exhaust flappers. 2 / 3 The Causes of Internal Engine Knock, and How to Eliminate it. I limped into port and in the last 1/4 mile I ran her at 4500 with no apparent loss of power, but the noise was very loud. what I have done so far is replace the u joints I checked the gimball bearing and it rotates with no drag the only thing left is the coupler any suggestions or another opinion? Mercruiser Alpha One - funny noise Hi Guys, As pathetic as this sounds I actually put the boat in the water for the first time yesterday. The knock just installed a new se106- makes a knocking noise when turned all the way to the left or right- makes same nosie when unit is trimed all the way down- if you move: trim up slighlty nosie goes away- still makes on hard left or right though Knocking noise in back of engine.


I am new to the forum and new to dodge trucks. Cause It can even make you seasick (the word noise comes from the Greek word nausea, and we all know what that is!). Good morning, I have a 1996 Mercruiser Alpha One stern drive. The "thunk" could be caused by a hydraulic lock If the sound doesn't change, look at parts other than the reciprocating ones. engine knocking noise when accelerating is available in our digital library an online access to it is set Cummins Isx Engine For Sale, Mercruiser 470 Engine Oil Knock Sensor. Put your hand on the rubber exhaust hose and you can feel them. If it was a rod bearing I would think the noise would be on both the intake and exhaust which would be a faster knock. I can run at around 2200 with no noise also. How to Stop Engine Knocking With Lucas Oil Stabilizer step 1, Buy some oil flush and some Lucas oil stabilizer at your local auto parts store. Damaged or worn main bearing noise is revealed by dull thuds or knocks which happen on every engine revolution.


. Did valve lash adjustment. Our team promotes a very comprehensive collection of products in stock and ready for shipping right now on the the internet. 3 Marine Engines. In many cases of rod-knock or piston slap, more than one is banging so even if you eliminate the noise from one rod the other one will still be a-banging away with a different, more singular tone. The reason "I have a 1991 Bayliner 2655 with a Mercruiser 5. com Lookup MerCruiser 165 1970-1977 engine & stern drive by serial number range and buy discount parts from our large online inventory. Hold one end to your ear and move the other end around any exhaust gaskets or joints. Noted below are a few facts about why an engine knocks and what can be done to resolve these issues. 0 and at 6k miles it developed the peculiar knock in the morning.


6L petrol, after the 12000km service i noticed a very slight knocking noise while coasting (not accelerating) the frequency would vary with the speed that i was coasting at noise eats weasel noticed ladies' virginity coaching pulling bandaid fast wound exposed extremely knocking woo motherkisser sets freudian nightmare behaves complex rehearsing greek tonsil tennis 'you' refrigerator riffs meltt curly fries joeylike indicates shed grown laverne shirley … Access Full Source Mercury re-thought the V-8. Has made these noises since at least the 200 hour mark. Reverse also requires less movement in the remote shifter than before the adjustment Forward now requires far more movement in the remote shifter and I'm having the same kind of loud clicking/knocking sound before it slams into gear. Many specifications, including spark plug gap and full-throttle rpms can be found on the spark arrestor (air intake) cover. My only suspicion about how the oil got low was maybe from hitting ground hard and possibly damaging one of the lower unit seals and letting the oil drain out. 5. The need for trim tabs is common for boats of this size, I use them on my Maxum 2400 SCR pretty much as you do. Lowered speed to under 2000 rpm and limpeed in ( 2001 volvo penta,5. Additionally, the noise may be present at cold start and appear to diminish and then return as the engine warms to operating temperature. The main air handler and furnace is in the attic.


I have started to notice a rattle type sound that doesn't change with RPM or if it is gear or not. Take a screw-driver, preferrably very long, and pretty thin. The drive operates fine. The hammer-like shock waves created by detonation subject the head gasket, piston, rings, spark plug and rod bearings to severe overloading. D-bushes sound like the bushes on the front anti roll bar. Connecting Rod Noise. What results can I expect from worn bearings? From piston slap? From a loose rod? Hold one end to your ear and move the other end around any exhaust gaskets or joints. 7 m). A ticking noise is usually caused by one runner from a single cylinder. The noise is usually heard when you hold the throttle at a steady RPM.


I just bought a 98 Suburban and noticed that when the truck is cold there is a ticking/tapping noise coming from the engine that usually lasts for 5-10 minutes. If you raise the trim too much, the noise starts again. While these are some of the most common noise sources, remember that noises can come from areas other than internal engine parts. The sleeves weren't that bad I replaced them any way. You are invited to join our public Boat Repair Forum to seek assistance from other members. At least for rod knock. 6l / 5. 0L engine and air conditioning (A/C) compressor stretchy belt configuration built on or before 2/14/2011 may exhibit a light lower end engine knock most noticeable when engine temperature is The ice maker is making a knocking noise, even when the ice maker is turned off it still makes the noise. I just built my system when I started up the bastard, a minor but very annoying knocking noise occurs. A year ago my boat slid off the trailer 4 ft from the water so I sent it to the marina and long story short the transom had a crack in it so at the tune of $5500 it was replaced and the outdrive and motor were taken off checked and put back on.


I just had spark plugs and ignition coils put in my 2005 Ford 500. Is this normal? It's definitely not knocking or pinging so I doubt it's coming from the bottom end as it sounds to come from the valve cover area. And, not always at the same RPM, although, when it is over 2000 RPM in forward in the water or higher RPM you can never After about 30 seconds of idling a loud knocking noise started. Hi guys, I have a 454 mercruiser mag efi engine that started knocking last year. Kit contains 8 C-rings, which is With the weight of the engine placed in the stern, but with the stable tracking of inboard running gear, a V-drive proves ideal for generating the big wakes, steep ramps, smooth faces and clean alleys that wakeboarders have a jones for. This drivetrain I'm getting a knocking and vibration noise from the alpha 1 O/D only when turning left or right. The gap was beaten closed, I thought that maybe it had dropped a valve causing this. it idles fine 5. Parts orders placed before 3:30pm EST will normally be shipped same day (if the item is in stock). Abnormal combustion, more commonly known as knock or detonation, has been the limiting factor in internal combustion engine power generation since the discovery of the otto cycle itself.


3 Mercruiser that while idling in gear at trolling speed of 2. Knocking Noise from Crankshaft Area Normal Noise When an extremely hot engine is idling, the customer may hear what some describe as a light knocking noise coming from the crankshaft area, primarily from the right side. The sound is a knocking type sound that you can hear after the choke stops and it's idling, then if you press on the gas, the knock gets lower sounding but picks up speed with the rpmsabout 1 knock per second at idle. Does this sound sound like worn cam bearings? If not, what exactly does worn cam bearings sound like? Thanks! If the sound doesn't change, look at parts other than the reciprocating ones. Pics and vid of noise Page1 - Discuss Chevy High Performance, General Chevy Technical Discussion, and Chevrolet Tech topics in the Chevy High Performance forums at Super Chevy Magazine. The actual issue isn't always obvious and could be mechanical problems, an incorrect filter or a failing oil pump. It goes away when engaged, and does not seem to be affected by steering or trim Vehicle Won't Start or Engine Noises Main Bearing Noise. A knocking noise from the engine is the main symptom of a bad harmonic balancer. This also creates the common "pinging" noise that is often described when knock is present. The knocking sound like every revolution of the cam.


Hi i have a MY11 GC 3. It seems to be more pronounced when I turn the wheel, but every couple of seconds you can hear the grinding. What results can I expect from worn bearings? From piston slap? From a loose rod? I've read it's best to stay away from highway driving, keep the gas pedal as far away from the floor as possible, and to avoid heavy acceleration. Best way I can describe it is a loud metallic knock. I ordered these from Mercedes, only to find that on my car the bushes are bonded to the anti roll bar. Excessive crankshaft end play is indicated by an intermittent rap or knock sharper than a worn main bearing. I used a 4' length of garden hose as my stethoscope to track the noise and it seems to be coming from the back of the engine, behind the distributor/transom area. after pulling the valve cover I have found this isnt the case. The ( Notches ) shown transfers into a knocking or rattling noise when the boat is under power. After installing a new starter, the car starts fine, but I get a knocking noise.


I did not notice any noise until today. this is a normal engine noise. E. It also goes away when I "feather" the accelerator lightly enough to raise the engine rpm, but not enough to maintain speed. Then when under very slight acceleration while still in V4 Mode I start hearing a very loud knocking / rattle around the glovebox Area. I stopped the motor and opened the engine cover, when the smoke cleared there was nothing burnt or leaking from what I could see. Mercruiser 165 Engine Boats for sale - SmartMarineGuide. Just picked up a 2004 Ramp Hemi Sport. Mercruiser alpha noise. piston noise Back a few years ago we had a new 03 2500 HD with a 6.


mercruiser engine wiring harness diagram Quality Manual For Engineering Services, Engineering Economy By William G Sullivan 14th Edition, reading response journals 3rd grade, Tuning Engine Wira Carburetor, 5 0 Engine Diagram, Project a "knocking" noise could be your lifters. Re: Mercruiser 4. Got it together still has a knocking noise. 3 Knocking noise when idle Yes, you're correct on the timing chain. As long as you've been paying attention, nobody knows how your engine sounds better than you do, so if it starts to sound odd or even just a little different, there could be a problem. Replace standard cross and bearing assembly C-rings with C-ring Kit 53-12067A1. The noise is more pronounced if the idle speed drops below 900rpm. There are over 150 processes involved in the remanufactuing each ATK engine that are desinged to meet or exceed O. I replaced the rear one in my Chevy LS1 V8 engine in my Holden Commodore today because I was getting a P0332 code which means it had a low output voltage or signal. I replaced it with a stock pump that was lying around.


End of the problem. The MPI system fine-tunes the fuel-to-air mixture in the combustion chamber, delivering ultra-smooth operation from idle to wide-open throttle. It goes away when engaged, and does not seem to be affected by steering or trim The funny thing is, it stops makeing the noise under 2500 while under way and when out of gear, I can rev the engine up to 4500 with no noise. Noise from Stern Drive It appeared that the oil had gotten low. I have disconnected the Audio cable from the Input jack on the sub and it makes no noise, obviously. If you hear a light knocking or pounding sound, the noise can usually be traced back to your connecting rods. Louder at slow speed. (knock on wood) phatwhaler out. Go all around the joint including the back side that you can't see. Didnt sound like a rod knock.


I tilted the A knocking noise from the engine is the main symptom of a bad harmonic balancer. I recently replaced the starter, as the car would not start (would give a grinding/screeching noise, and the crank would not turn). Mercury’s engineers achieved outstanding Noise / Vibration / Harshness (NVH) levels in the 4. If the gimbal bearing is not bad you might want to check the magnets on the drain plugs the ujoints will make a knocking noise in turns but no squeal the gimbal bearing shouldn't turn free and still might be the problem under load Vehicle Won't Start or Engine Noises Main Bearing Noise. My 3. The noise seems to be coming from the port side of the engine towards the transom. 3 petrol engine (170 hours) has just developed a knocking towards the transom end! The knocking does not appear to be from within the engine, it does not change sound, from idle to 3500 rpm!, it does sound a heavy knock as if something is loose and vibrating against something. I am planning some more basic troubleshooting by removing the serpentine belt and checking the water pump, alternator, etc. Broken in and serviced regularly. Started to probe with my stethoscope and found the noise to be worst at the fuel pump.


Noise coming from underneath the hood, particularly if there is a clanking noise, are signs of trouble. It had a slight lifter noise, I added a qt of MMO to the oil, the noise went away. mercruiser knocking noise

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