Mercury outboard bearing noise
Mercury outboard bearing noise. " It is a 1991 Mercury 50 horsepower, 3 cylinder. Unlike F, which has a built it overrun clutch and free wheels Apr 18, 2012 · Re: 1996 90hp 3cyl mercury ticking noise or clacking noise Do a compression check but if the noise goes away without a load then that says cracked/broken piston skirt, rod bearing, wrist pin bearing, scored cylinder to name just a few. Ask the experts on our Mercury Outboard Parts Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. The engine worked flawlessly last summer. Estimate listed replace "input shaft assy. A lower unit failure in the Outboard Motor can readily affect the powerhead. Gear lube leaks can be caused by a number of things, including damaged seals or gaskets, a cracked case, or stripped pinion gear and some reverse gears. The noise is intermittent and most noticeable at idle. Jan 2, 2022 · In this video, I go through all of the failed methods and finally resort to a method of last resort to remove the Stuck Bearing Carrier on my Mercury Optimax Mercury Outboard Noise Forum Topics. Rugged durability. comoutbo Find the right parts to fit your Mercury® or MerCruiser® engine with the online Mercury Parts Catalog. I can't hear it at all at cruise. Low idle speed adjustment is incorrect - Need to adjust idle speed. I'm currently trying to determine a strange noise issue with a 2000 Mercury XR6 150hp V6. I found the problem, when i removed and cleaned the carbs I did not remove the pilot adj screw covers, when I removed the brass covers I found that on the no 2 cyl pilot screw was turned all the way in causing my lean pop. For example, if you require a 32:1 ratio, each gallon of gas requires 4 ounces of the right oil for the motor mixed in. #12. Fortunately, various solutions can help you reduce the knocking noise. Re: lower unit make a grinding noise when i put it in reverse. Any ideads would be helpful. Does anyone have any idea what it might be? I have changed the impellor but still the same. 6 Problem #6: Delayed or Slow Shifting. Mercury SeaPro™ outboards are built to handle the heavy-duty needs of commercial boating applications. I have pulled flywheel, removed stator assembly and now I can see top of the cranckshaft and upper oil seal. The Mercury-exclusive Advanced MidSection (AMS) and under-cowl noise management set the standard 4300/43 Series Cable 1/4 - 28 Thread. E-TEC V-4. Low octane fuel - Use proper gasoline. or spark plug fouling. Nov 28, 2015 · use a tad of simple logic. Could even be carbon build up. #1. "The 60 is now a common engine on "package deals" which formerly had a 50 2 stroke, so you will see many on the back of Trackers, Legends, Starcraft, Lund's etc. It may still be present at higher RPM but the increase in the noise of the motor doesn't allow me to hear it above 800 RPM. 4. There were no significant vibrations when driving the boat. When running her with mufs on today i noticed a ticking,knocking noise that seems to be coming from the bellhousing at the rear of the engine (whare the shaft goes through the hull). Slightly changing RPM higher/lower will temporarily eliminate or change pitch of the squeal. It's difficult to say if they have any chronic problems because they just haven't been around long enough (in suffient quantities) to Verado® - For boaters who refuse to compromise, Mercury V8 250 and 300hp Verado® outboards represent the pinnacle of superior outboard design and performance. Og886469. Mar 24, 2010. The sound doesn’t always occur. They deliver exhilarating acceleration and top speed, with the power and reliability to make runs over long distances and choppy water. I removed the mid-shaft bushing (which was new anyway Performance-Inspired Gearcase. Once all the way up put a nut on to hold it in place and test the shifter. The service part is based on year of the boat. Inspect the boat lower unit for any leaks, cracks, or damage periodically. yours is a 2. You are invited to join our public Boat Repair Forum to seek assistance from other members. It worked perfectly last summer (was serviced at 40 hours and the break-in period was followed to the letter). I dropped the lower unit and greased the drive shaft May 30, 2023 · Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. Jul 16, 2021 · One of my 225s makes a whining noise primarily at idle, or low RPM. Th Use a gearcase pressure tester to build up pressure in the unit and spray the seals with some soapy water to reveal leaks that you can't see. Re: high-pitched squeal, 50hp 4-stroke. I check and grease the gimbal bearing if it is Sep 6, 2010 · Dec 18, 2007. - Barnacle Bill's Marine Supply. If all is good, replace the lube, preferably with Merc High Performance (the green stuff) Aug 5, 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Mar 24, 2010 · 28. Mercury Gen 1 Control To Universal SAE 10-32. Re: Ticking sound on a 25 hp merc outboard. The grinding noise in neutral went away when i tapped the key back to run. If the shift cable is adjusted all the way to one end or the other it's not adjusted properly. To correct this, empty the fuel tank of all oil. 065" FIts 1 3/8" Shaft Cross Ref #: 16540, 93496 Mfg Part #: 31-93496T Click to see substitution Items: Not In Stock 816 Bearing, Upper Main Mercury 3. Knocking is usually not a piston/ring problem. This engine noi If it is not smooth then replace it. MarineEngine. Another possibility is a crack in the engine block or cylinder head. There is no water in the bellows just grease,this was rebuilt but this noise continues just want it to go away pulling drive next week to replace the u-joints supplied by the rebuilder and a new gimble bearing when the drive was off before I and another mechanic checked it and felt it was good as well as Bearing, Upper Main Mercury 135-225hp 2. #5. 28,765. Apr 27, 2011 · Mercury ELPT: intermittent squealing noise. These replacement parts still need to be identifed. Bad bearings tend to make more of a growling sound in my experience, but that doesn't mean you could have damaged bearings as well as gears being out of adjustment. 8 Conclusion. Oct 18, 2006 · Oct 17, 2006. Knocking sound at idle and low rpm. Re: Motor is making a "Ticking" noise. Apr 2, 2021 · Posts. 4L OD 2. Boat is in neutral. Make sure to have your model number. After noodling over the noise after my post I think it may be an alignment issue between spline and gimbal bearing. View All SmartCraft Technology. #7. Shifts into forward just fine, but grinds and makes a lot of noise when you shift into reverse. Feb 21, 2020 · Marine Tech Tools 40mm Pin Wrench (AMT0018) with L-6 Pins, Outboard Trim Pin Wrench, Mercury Verado Trim Cap Removal Wrench, Boat Tools, Fits on Mercury Verado 175-350HP 4. You should not run it in gear above an idle on muffs, and really You have places to go, and the Mercury 40 to 60hp FourStroke family of outboards is the easiest way to get there. 3 sorry; My qustion is do you steel have the motor , I shure could would like to buy the fule tank, gas sute off valve, fuel cap, seals exc; If so please call 1-541-728-5443 iam good with pay paw. Nov 5, 2003. I read about people experiencing similar to me and getting rid of it by lubricating the upper bushing that supports the driveshaft. You will want to check it for color and metal content. 2 stroke. Mercury Outboard Parts Powerheads Mercury Propellers Mercury Outboards: Noise No Results To Display. I have an '04 Mercury ELPT 60hp 4-stroke that's giving me a little trouble actually, it runs great, but after it's really warm, there's a significant squealing noise that sounds like it's coming from the top end. Re: 60HP Mercury with knocking noise. Apr 25, 2023 · 1 Problem #1: Stiff Shifting. Mercury SmartCraft® digital technologies refine the entire boating experience to ensure every day on the water reaches its full potential. Now loosen the 6 5/8 nuts which hold the drive on the bellhousing. Force/ Honda/ Yamaha/ Suzuki/ Tohatsu/ Nissan. The 75 to 115hp engines are quieter and smoother than any competing outboards on the water. It’s designed to turn a larger pop, providing greater acceleration, better handling, awesome maneuverability and superior control. . Grinding Noises. The squeal does not appear to be coming from the Power Head but more from the mid-housing area. I couldn’t hear it at idle or at higher rpms. Nov 12, 2008 · Mercury 3. Such a sound can take a toll on your boat performance, and not to mention a little bit annoying. took it back and the mechanic dropped the lower unit and everything looked good. The 115hp engine can be paired with the Command Thrust (CT) gearcase. Launch Parts Catalog. certain 3. Dec 8, 2012 · I have a 1999 mercury 200 hp efi outboard. May 14, 2012. Properly lubricate the gears and bearings according to the manufacturer’s instructions. 3 Problem #3: Difficult to Engage Gear. 365. Gerald; I would get the lower unit removed and check the engine driveshaft for lateral and vertical play, indicating a shaft bearing or possibly a loose pinion nut. Re: 200 HP Mercury started knocking. The motor is a '94 Yamaha 70 HP. motor was always very quiet. 2 ounces of the correct oil and for 50:1 Jan 18, 2010 · Aug 30, 2005. I had the same problem as OP on a 3. bbmarinesupply. Sep 12, 2010. Jan 9, 2007. Once I got to about 5 to 10 miles per hour it stoped until Oct 13, 2020 · It is used in removing and installing the driveshaft bearing retainer nut (824519-1) on some Mercruiser Sterndrives and Mercury outboard gearcases. Jul 23, 2022 · The propeller shaft connects to the pinion bearings and gains horizontal rotational power from the gear case. once worn enough to knock it knocks all the time ,but usually not for long. The next day I started it up intending on finding out what the problem was but it ran as usual without the whistle. In this blog post, we’ll explore common problems associated with Mercury 2-stroke outboard engines and provide detailed, step-by-step solutions for fixing them Step #5: Refill the Lower Unit. A persistent, loud whine sounds like gears may be grinding. Worn crankshaft or main bearings - Have bearings or crankshaft replaced. Aug 26, 2010. 3. The noise is eratic at tickover as in a tick/knock SeaPro™ (15-500hp) Commercial Outboards. Using a high-density cushion material like Jul 28, 2017 · $11. Learn More. Jun 24, 2021 · 976. Messages. Hi,<br /><br />I've got a 1981 120 Mercruiser that has developed a noise in the flywheel area of the engine that sounds like a severe metallic "rattle". Reverse gear is a set of rectangular (square essentially) cogs and slots; cogs in the clutch dog (3 and in later model engines 6) and a corresponding number of slots in the face of the R gear. 2000, and perhaps even after that for sale in countries other than the USA. This motor is pushing a 17' 1970 Glastron shallow V bottom. I just noticed the noise the last two times out. Jul 19, 2014. 5 Problem #5: Neutral Gear Issue. These can eventually wear out and leak, especially if not properly maintained. Boat seemed to run fine on the water, however I was not listening for a clicking noise. Recreational Outboards - Make every minute count. If there is a problem with the driveshaft or not, the guts are going to have to be pulled from the housing to further This 2020 Mercury Marine 50 hp 4-stroke EFI, has ~65 hours on it, and has started making this weird noise, it hard to explain. Keeping the carbs in optimum condition so that the powerhead is not deprived of proper oil levels. Mercury Outboard In-Line Upper Main Bearings: Model: Cyl. Last year I repowered a Boston Whaler with a 90HP Mercury 4 Stroke 2010 engine. Drain the lube in the lower unit and examine it. #2. Among the solutions include: Line the inner side of the engine box. This involves pulling the carrier out of the lower unit. To solve the problem Mercury developed more exotic propeller hub kits which have an elastic coupling mechanism between the propeller shaft and the propeller that absorbs some of the instantaneous changes Jul 30, 2011 · Jul 29, 2011. Does the clicking increase or decrease with throttle? Jul 12, 2010 · Jul 12, 2010. I checked compression, which was perfect, and decided to run it today. To place a parts order please call us at (856) 785 9455. Hi, this motor is about 8 weeks old and has been used 6 times. From intelligent gauges and displays to advanced systems that make boat control easy, SmartCraft gives you the power to do more with your time on the water. Mercury was still making those older-design, high-emission, two-stroke-power-cycle outboard engines until c. 4 Problem #4: Gear Slipping. Electronic fuel injection for reliable starts and increased efficiency. In a clean can containing a gallon of gas, pour in the correct amount of oil. I'm familiar with automotive engines and would relate the noise to a loose or cracked flexplate on a car. The whining noise should go away when you put your vehicle in gear if it’s the torque converter. I used a stethoscope to try to find the source, and it sounded like it was at the gearcase/mid-shaft bushing. Jul 28, 2022 · Leaking Gear Oil. I've been trying to work out an occasional miss in the engine and Aug 6, 2018 · The noise doesn't change moving the steering or trimming up-down so think U joints are ok. 00 fix for what I thought was a New Lower Unit. Aug 9, 2009. I have a 2019 60 hp merc. I recorded this video you can hear the noise at 24 seconds, 56 seconds and 1:04. The banging doesn't sound good. 2 out of 5 stars 22 1 offer from $64. Jul 29, 2011. I had the bottom engine bearing Smooth & Quiet. Hello, I have a 2004 2-stroke 60hp Mercury that started making a whistling noise after after running the engine for a while. May 14, 2012 · 5. You can search by engine model or serial number to see detailed engine diagrams and part numbers. Jul 11, 2005 · 27. The noise seems to stop when the rpms are above or below this range. It has a high pitched whirring sound at idel. Jul 11, 2005. Hey guys, try spraying a little WD-40 (or similar product) at the upper driveshaft bushing (near the top where it goes through the adapter plate). I had read that it is caused by a bushing that supports the drive shaft in the midsection. #4. I would therefore expect you will need a bore job and new oversize piston/ring set, plus some new bearings. Aug 26, 2010 · Jul 18, 2007. Nov 23, 2022 · While there are several things that can cause your boat to irritatingly vibrate, here’s a quick recoup of the most likely reasons: Damaged propeller (inboard or outboard motors) Damaged propeller shaft (inboard or outboard motors) Cutlass bearings (inboard motors) Engine mounts or alignment (inboard or outboard motors) May 22, 2021 · Yes, it was neglected as I have found going over the entire boat and trailer. Clean the carb. No greasing required the need to remove the drive is somewhat not done any more. 40/50/60 COMMAND THRUST FOURSTROKE - Mercury Marine May 18, 2009 · May 20, 2009. Watch our Yamaha outboard lower unit disassembly video below to see Dec 17, 2006 · Sep 22, 2003. Nov 19, 2023 · The reason. It ran like a top, but it did seem to have some noise coming from beneath the flywheel. May 25, 2016 · Knocking sound at idle and low rpm. Jan 19, 2010. 3hp outboard gone bad Hi, ncapnear my name is Bill (Medford, OR ) I understand from your 11-14-2008 post you had a bad experanse with your 3. This bearing retainer wrench is a replacement for Mercury 91-43506 GLM 90240 Sierra 18-9842. 3,903. As a result, the propeller rotates. After a couple of minutes at idle it goes away, but will return if the thottle is advanced to 11-1200 rpm. It is used in removing and installing the driveshaft bearing retainer nut (824519-1) on some Mercruiser Sterndrives and Mercury outboard gearcases. The next step would be to check the output shaft carrier seals, shown below. Jan 29, 2010 · Jan 29, 2010. At higher RPM, the noise gets quieter or just gets overcome by the engine noise. I have a new water pump rebuild kit. Check the propeller for any damage or wear. Recently I've noticed a faint high-pitched squeal or whistle coming from the motor after slowing down from speed. It sounds like your describing a bearing going bad. From the start it has had a chirping sound that occurs at rpms a bit above idle. Serial # Part # View Price, Image or: 100 10: 2: 1290910-1455239--150 15: 2: 1288910-1349697--200 20 Jun 4, 2003 · I have a 1995 Centery 18' bowrider with a 4. 0-2. Lower Drive was recently worked on by a certified shopbrand new prop shaft, seals, bearings, prop. If there's significant metal in it, or it is low or half water, you probably have a serious problem with the lower. #3 06-24-2021, 03:26 PM. Symptom 2: Engine Not Cooling Down. Impressive torque. a wristpin and its bearing are mechanical parts. Aug 9, 2011 · Aug 10, 2011. Re: Lower Unit Noise (Is It Normal) It should not be chattering from my experience. For one, proper oil to gas ratio. Jul 30, 2012 · 9. 0l. Jul 19, 2014 · 190. Wasnt sure what the cause of it was so I immediatly shut it off and went home. When the shaft’s damaged, the propeller will lock up. Mar 18, 2024 · My 2016 Mercury FourStroke 115 EFI has developed an intermittent grinding noise when running at idle in neutral. Clogged or defective fuel pump - Clean or replace fuel pump. Optimized from the cowl to the mounts to minimize noise and vibration, Mercury FourStroke outboards are exceptionally quiet and smooth. Mercury Gen II Control Box On Foreign Motor. Sep 18, 2011 · Maybe put some muffs on it and use a automotive stethoscope on the L/U . Hi I have Mercury 25hp 1985 y. just had my impeller changed a couple weeks ago, (2006 Merc 115 4 stroke) and now its making a rather loud noise in neutral after warm up. This is a long shaft motor. I'm thinking possibly a problem with the neutral lockout mechanism, or the recoil mechanism. Every spot, every tow, every cast. 0L Cross Ref #: 816773A2 Mfg Part #: 31-816773A2 In Stock Aug 5, 2015 · Remove the two nuts on the rear end of the two hydraulic cylinders and pull pin out of drive. I've checked with the motor cover off and the Engine knocking or noise. Thread the lower unit pump tip into the bottom plug hole. It’s everything you need to get more out of your time on the water. INSTALLS & REMOVES DRIVESHAFT BEARING RETAINER NUTS — You don't need to go to a dealer or marine Aug 9, 2009 · 1. Apr 22, 2013 · I have a 2001 Mercury 75HP 2-stroke outboard which developed an annoying intermittent squeaking noise at around 100 hours. " Labor $1750 parts $1250. If not that, another possibility would be a worn wrist pin. Obviously, zero compression is a ring/piston problem. This will help protect the gears from wear and tear. 2 Problem#2: Grinding Noise. Aug 11, 2017 · Less than 50 hours on it and it starts squealing like it has a loose belt or dry bearing something. Among all the things that can cause a coolant leak in your Mercury 50-hp 4-stroke engine, the most common reason is a faulty gasket or O-ring. My 2004 F115 runs fine and has a good cooling water stream. When oil begins to trickle from the top vent hole, you know that the lower unit is full. #4 04-02-2021, 08:00 PM. Another reason for the alert system to beep is if the engine is overheating. For 40:1, add 3. The sound is present regardless of whether the motor is in gear or neutral. The prop will ratchet in one direction and lock in the other when in gear. The drive weights about 80 lb (36 Kg). While you are at it check the reed valves for wear and tear. The bearings on input shaft are bad. 99 Aug 3, 2016 · Mercury 50 efi 2016 outboard squealing noise after less than 50 hours Oct 5, 2011 · Re: Whine From the Outdrive. This year when we first put it in the water and started out it started making a viberating noise. If you notice gear oil leaking from your outboard motor, it’s a sign that the lower unit oil contained might be damaged. Take the prop off and run it and see if that makes a difference, and inspect the shaft for crud and fishing line that the prop might be rubbing on. They can answer questions for any Mercury outboard motor model or horsepower including Chrysler Outboards, Force Outboards, Mariner Outboards, and Mercury Inboard/Sterndrives. Mercury Control Box On Foreign Motor. The engine has a temperature sensor that monitors the temperature of the engine parts. Lay the drive down. there are no shaft knuckles in any Yamaha outboard products. "The 60 is now a common engine. We get those separated, and then unbolt the lower unit. SAE 10-32 Control To Mercury / Mercruiser Engine. My '70 Mercury 115 is a 6 cylinder, 2 stroke electric start. I have it all tor … read more Mar 15, 2009 · Id does, however need to have the correct air fuel mixture, check a manual to get the correct lean/rich screw adjustment, usually 2-3 turns out. Jul 14, 2010. My 2019 60 hp made a chirping noise at rpms above idle. posted 07-14-2011 03:18 PM ET (US) Propeller rattle noises are a well-known problem with Mercury propellers that use the FLO-TORQ II hub kit. It's quiet when you first start it up, but after it warms up, the noise begins. Jun 27, 2011 · Here are the facts: 1. 976. Following that, use another cotton applicator, coated with Yamaha grease, and apply that grease to those two upper bearings. The shift shaft on this unit is in two pieces. I tried putting grease on the upper portion of the drive shaft but it didn’t Aug 19, 2013 · Aug 19, 2013. Re: 94 mercury 90 hp reverse problems. 33. A job on the water can be unpredictable, but a SeaPro outboard clocks in on time every day, eager to work as hard as you do, for as long as you do. Sep 27, 2015. 3 mercruiser inboard engine and alpha one stern drive. I do not have a 4 stroke but 99% of lower units Oct 9, 2015 · The information was developed from older literature, for older and simpler two-stroke-power-cycle outboard engines using these rather primitive electrical devices. com does not offer troubleshooting assistance or repair advice by email or by telephone. Nov 1, 2016 · Put the motor in neutral after you disconnect the shift cable. But I need oil seals kit and bearings for it. However, like any mechanical device, they can occasionally encounter issues and require troubleshooting. Jul 18, 2015 · Propeller shaft bearings, pinion/fwd/rev gears inspection and shift shaft and drive shaft installation. thanks for all the help Please Note. Oct 3, 2019 · 4. Oct 26, 2019 · Tim, owner of Outboard Exchange, replaces a bearing on 200HP Mercury outboard. engine overheats. With innovative technologies, simple maintenance and efficient performance, Mercury FourStroke Nov 4, 2003 · 315. When spline is loaded noise goes away. 1L engines in the late 90's did have some prop chatter issues at idle speeds. Engine is running overloaded - Reduce the load. Grinding, rapping noise started about two weeks ago when I put the motor in gear, and wound up being that the gears were chewed up. It's worth mentioning that Yamaha's 200-250 SHO line consists of big block V6 engines, while Mercury's 200-250 Pro XS line features V8 engines. Gently pump, so air doesn’t get into the gear case. newer models (I forget the year it changed but in the 90's) went to non serviceable ujoints. well its ooold but its running Ok except that upper roller bearing is "making noise". Smooth performance. 6L. When in neutral there may be no load on the bearing so it whines. If it lasts me 10 yrs. Just made this video to show what was going on with my new Mercury motor after about the third hour of use in the break-in period. I don’t hear clicks. If the engine’s oil pressure drops below a safe level, the alert system will beep to let you know to check the oil and potentially add more. Mar 22, 2011. Dec 9, 2022 · Change the gear oil in your outboard lower unit regularly. A bad torque converter can cause a whining sound when starting your Mariner. 364 Mago Point WayWaterford, CT 06385860-437-0060info@outboardexchange. Keep the upper plugs out during this time. Change the plugs. After identifying the parts you need, contact your Mercury Authorized Dealer for assistance or to place an order. I have seen that bushing develop corrosion between it and the aluminum it is fitted into and cause the bushing to ride on the driveshaft Jan 3, 2003 · Jan 3, 2003. You should know that the driven gear's position in the upper unit is shimmed to a tolerance Jul 5, 2023 · Mercury outboards are known for their responsive throttle and handling characteristics, particularly in higher RPM ranges. To learn more about us please visit www. 81) 1117P Bearing, Pinion Mercury 115-225 Force 90-120 Alpha I, Gen II, Verado Mfg Part #: 42647A1 In Stock Mar 22, 2011 · 4,845. Almost like something was striking the back of the boat. 7 Problem #7: Gear Shift Lever Not Staying in Place. Instead of rebuilding, I decided to just buy an entirely new lower unit complete, so all I had to do Jun 2, 2014 · The best way to accomplish that, according to a Yamaha Tech, is to, believe it or not, use a shotgun cleaning rod with a cotton applicator drenched in brake cleaner to clean off the old grease. The 150hp Pro XS gearcase is optimized for fast hole shots, top speeds and enhanced control at wide-open throttle. Mar 27, 2012 · Mar 27, 2012. w/regular service I'll be happy. Then carefully install the gearbox and spin the flywheel clockwise to line up the driveshaft splines and wiggle the shift lever to line up the shift splines. I have a 2001 50HP Mercury two stroke that has recently acquired a squealing noise. Watch the video above to see how to remove the gearcase from a Mercury Tracker 40 two-stroke outboard. Dec 12, 2011 · I was told by the marina that the nicer boat had a bit of "bearing noise, but they'll run forever like that. Check the compression, if the motor's been run lean too long the steel ring keeper pins in the piston will swell and score the cylinder. Torque Converter. Me I remove the drive no matter what. When you put it in gear you are putting a load on it that may cause the sound to go away,but not the problem. Sep 27, 2015 · 11. Re: 75hp 4stroke mercury 2001 poping noise at idle. and U-joints, gimbal bearing, intermediate shift cable, trim pucks, bellows, seals, etc. 2. That's normal. (List Price 0. Hi there i own a boat with a 1990 4. Thanks again. One common reason is for low oil pressure. After about 15 hours of use this summer, the engine began making a Watch on. com. it's pretty alarming but I Jul 20, 2019 · An outboard motor noise often comes from the housing of the engine. Noise is from rubber bushing that holds the spline in the flywheel. Mercury/ Mariner/ Mercruiser GEN II Style. I do all of my own work (thanks to the wonderful folks here at iboats forum!), but I'm no boat mechanic, it sure sounds to me like something loose making that rattling noise. Had it on the Ohio River in November, rpm only 3800 two times, then dropped to 3200 rpms. This DIY video describes how to inspect, remove and re Jul 12, 2010 · Regular Contributor. Jul 30, 2012. Re: Knocking or Hard Rattle In Outboard. . Put a block of wood under the skeg and pull the drive off the bellhousiing. Your local Mercury Authorized Dealer is the best place to see and purchase Mercury engines, parts and accessories, and to get expert support when you need it. To solve it permanently I lubed the key slot with graphite. Jul 4, 2019 · Move the throttle back to neutral and the nss allows power to the starter again and you get a grinding noise. Aug 23, 2022 · In this video, I show you how you can remove the serpentine belt on your vehicle to help track down an engine whine with acceleration or RPM. This procedure is necessary for replacing the water pump and upper seals on this Mercury outboard. A good place to start would be to check the transmission fluid. The lower unit is making a high pitch noise when in gear and running 1200-1400 rpms. I don't think it's anything mechanical, but perhaps a loose fitting spark arrestor, heat shield, belt driven accessory, or something like that. Jul 3, 2002 · 07-03-2002, 10:27 AM. 3 Mercruiser with a Alpha 1 outdrive. The noise sounds exactly like the squealing you hear when you have a loose alternator Jul 16, 2013 · Jul 17, 2013. mp bj oy xo ei kx ku tj rh jq