Boat engine water leak. Jun 15, 2012 · Jun 15, 2012. May 3, 2017 · May 3, 2017. Re: Water leak between inboard and outboard. Sep 18, 2010 · The fuel/oil mix is dependant on the pump sucking up 50 parts fuel and 1 part oil per cycle. Boat Length. . Another is to follow the cored deck Golden Rule: Seal the exposed edge of the coring with marine-grade epoxy when drilling and mounting hardware. I’m moderately knowledgeable when it comes to motors and did a lot of my own work on my first boat. You can and should just remove the two bottom bolts and inspect inside the bolt holes. I think water from the engine may have traveled through the couple to the Gimbal bearing. In FL, we have numerous power plants that use salt water for cooling. Noticed bilge pump kick on, immediately got looking and found small drip coming in from drive unit gimbal bearing area. It only leaks when the engine is tilted upward. Take a look at the u-joint bellow. Re: Outdrive Leaking Water into Boat. Re: Mercruiser Alpha Drive Leaking Water in Engine Compartment. Apr 17, 2010 · Aug 31, 2004. New member. How Do You Find A Water Leak In Bilge? One of the challenges of maintaining a boat is finding a leak in the bilge. it is a 2006, SN: 1500326, The motor has the left and right side cowling with a gasket around the bottom at the lower unit and a gasket half way up to seal off the engine compartment. Make sure to verify the water is going to the muffs before starting the engine, this can be verified as water will be leaking out around the muffs. Jul 11, 2015 · You will have to pull the sheave off the shaft to replace the outer lip seal (of course). 3 water in cylinders. We will now see the main reasons why you will get water in the bilge. "Ok, I have a 1996 Evinrude Intruder 150 I just rebuilt the carbs, and installed a new water pump to include new housing, Now it runs great when I fire it up. look around where the driveshaft from the drive passes through the transom. i have water coming from between the power head and exhaust housing. Now when the original bellows was pulled it Apr 28, 2015 · Apr 28, 2015. Some connection to the cooling system leaked = water. Re: Bought a used boat; smoking engine and water leak. Mar 7, 2009 · 3,598. No not every boat has water pouring out after use. Re: Merc 4. Learn More About Your Boats Systems By Joining The Born Again Boating Academy! https://www. Jul 15, 2017 · The cooling systems spring leaks, and apparently repairing cooling lines with epoxy products is routine. Oct 1, 2009 · Oct 1, 2009. spatty99 said: Just speculating, but I believe that hose connection could only leak while the engine is running, so you don't need to stress about wet storage. Have pictures - … Oct 29, 2011 · The biggest sign (in my opinion) of having water in a cylinder is either visual presence of water in whatever form, or one cylinder that is spanking clean when the others show carbon deposits. You would need to remove the complete drive and gimble housing and replace the seal between the transom and the housing. Water hose inside housing tight, no cracks or leaks. To determine at which temperature water would freeze in the Jun 20, 2006 · Pulled the boat out of the river to find the leak by filling the bilge with water. Jul 17, 2015 · Alpha 1 gen 2. #6. #3. From what I can see the water runs through the exhaust manifold then through a hose into the engine but I see only one hose. Jul 9, 2017 · This seems to be happening more and more. Engine has cracked block = water. Keeping the Water and Gas Separated. Using that term will get more hits or attention. If there is an air leak in the fuel line, the fuel pump chamber might only fill partway with fuel. In Apr 4, 2008 · 6,761. The 85 Johnson is held to the transom with 4 bolts. The manifolds don't have much pressure on/in them. From looking at all the pictures of the outdrive parts, I would think this would have to be one of the bellows or possible something else like shift shaft??? This is a 4. N. The Marine-Tex waterproof epoxy sealer by Travaco is a marine-grade formula that seeks, fills, and seals leaks and cracks. What must I do? Thanks for your help. May 23, 2004 · Boat Engine Parts Outboard Motor Parts Water Leak. Jul 11, 2011 · Boat Engine Parts Outboard Motor Parts Chrysler water leak. Carb was torn all the way down to a bare shell, soaked on carb cleaner overnight, and then cleaned with spray cleaner and compressed air. Is sounds like water running and then dripping down in the bilge, but I cannot see it. The manifold that takes the water from each side of the block and discharges thru the transom. Aug 28, 2013. I'd also recommend drilling into the transom with a 1/4" drill bit and check the shavings. All V-8 engines, for instance, have a separate exhaust manifold along the side of each cylinder bank. Pull the pump off the harmonic balancer (3 Allen headed bolts, 5/16" or 8mm) and rebuild it with a new bearing and seal. Apr 12, 2020 · 2007. Mar 29, 2023 · I use 14- 15 psi to pressurize the entire drive (both upper and lower assembled) and NO gear oil in it. The two top bolts control the height of the motor. 28,195. com/Get Your Born Again Boating Clothing! https:/ Jul 29, 2008 · Member. D. Aug 17, 2009 · The engine block drain plug is on the opposite side of the engine from the leak. Water leaks are generally due to bad gaskets, worst if OB is salt water used, never flushed with fresh water after use. Ujoints are all rusted which tells me the May 21, 2012 · I took my boat to the ramp today in an effort to locate the source of the leak. Exhaust manifolds and risers are large metal castings that carry hot exhaust gases away from the engine on inboard engines. Re: Leaking water into the bilge. Re: Leaking seam between lower unit to upper. I have sealed the drive with marine grade silicon on the outside of the transom, to eliminate leakage around the drive. Dec 28, 2023 · Water leaks have the potential to cause significant damage to the engine in a relatively short time, or even to start filling the boat with seawater! If it’s not clear exactly where the water is coming from, narrow down the possibilities by dipping a finger in the fluid to check whether it is warm or cold, and tasting it to check whether it May 31, 2014 · There is no water leaking when on the muffs only when in the water. Should hold for about 1-2 minutes and your good to go. May 31, 2010. Jan 21, 2016 · Jan 26, 2016. Jun 19, 2013. When I shut Apr 23, 2011 · Hi, I am trying to get a sense of what's causing this water leak. Jun 20, 2009 · 70,623. 1984 Sea Ray Seville. Jun 12, 2016 · Marine Engine Maintenance; Boat Cleaners & Waxes Mercruiser 3. Drain and repeat 2 more times. Aug 3, 2013 · Re: Slow leak from motor bolt on transom. May 27, 2017 · Hooked up my engine to a water hose and turned it on. The surrounding water will keep it from freezing. The digital camera should be able to see if just fine, No need to do it running. Bellow boots and gimble bearing have all been replaced about 3 weeks ago. It's leaking out of the boat between the hull and the gimbal housing. Ok, I got the electrical stuff out of the way enough to remove the thermostat cover & thermostat. I am pretty sure that Sierra gasket I installed didn't mention to not use sealer. You get more smoke and a poor idle from the excess Oct 2, 2022 · Make this silicon rubber sealant your primary maintenance and repair tool for a worry-free marine navigation experience. I have done lots of work to it - too much to list here, but I am having an issue dealing with a leak. The inner oil seal can be removed by driving 2 screws into the seal and pulling them with a 2 jaw puller. Re: Water leak behind Water Impleller - Volvo Penta 4. There is a seal on that shaft, but that seldom cures the leak, and it's not normally replaced but can be purchaced seperately. The Vacuum check is used mostly to check for seal leaks when water is getting into gear oil and a pressure check does not reveal the leak. '. Apr 18, 2010. 7 Mercruiser Alpha One Outdrive The slow stream of water enters the boat at the bottom and center of the inner transom plate between it and the transom wood. Jul 19, 2007. If you know someone that has an impact driver I suspect it would make easy work of removing that bolt. Re: Mercruiser water pump leak. I couldn't see what was leaking within the boat since there's no room between the engine and the drive to see anything. SX. 3. Oct 25, 2009 · 28. Re: Volvo Penta raw water pump leaking. Bought boat a week ago, standing water in aft bilge, bilge pump in, works fine, this was just the water that the bilge pump cant get out. As it slowly slithers it's way down the housing you notice a "leak" - nothing to worry about. If water is getting into the u-joint bellows it will enter the boat through this hole. galamb said: The "leaking" oil is normal on a 2 stroke. could be bad gaskets between the risers and manifolds, this will allow water into the exhaust chamber of the mainfolds and back into the cylinders. Also make sure your heat exchanger (if FWC equipped) and your exhaust manifolds do not become overly hot while you are warming it up. The mariah runs great. That water coming out the seam has done it's job and is on it's way out anyway. Check to see that the bolt holes are properly sized to the bolts. This can be done by checking for leaks in the engine, inspecting the cooling system, and checking the oil cooler. Re: Unusual water leak. Jul 7, 2014 · This is my first boat. Re: 5. 7 engines leak water into cylinders. On your model this is in the outdrive. Exhaust manifold gasket could be leaking, which would allow water to get into the exhaust and to the exhaust valves and finally into the cylinders. I pulled it out and it had no leaks. It wont leak with the flusher on or idling, but when I put the boat in the water and go for a run, I get water in the bilge. I say you need to replace all bellows and check the mechanicals for corrosion while you're at it. you can bench test the manifolds and risers by removing them and filling them with water and looking for leaks. Flexible fuel lines get hard and brittle as they age and must be replaced. Sep 9, 2019 · Posts: 106. It only leaks when it is in the water and does not leak from May 17, 2021 · There is a leak with water coming from the transom, through the gimble bearing, and hitting the flywheel with the water coming out of the housing beside the starter. It is leaking out of what I believe is the gear shift shaft seal, and down the gear shift shaft. A short (12") length of water hose that fits the water inlet on the manifold. Correct this by completely filling the holes with epoxy and milled fibers; then redrill the holes (using a drill guide) to their proper size. #1. J. There is a raw water pump that draws water in from the body of water the boat is running in. There's no seal there, the midsection fills with water in use, and it has to drain. Smoke out the exhaust and mist/spray/dribbling water out of the prop are all normal conditions. B. Water started leaking around hose connections (probably ~40psi water pressure) so I'm sure my block is fine. It's an aluminum pipe which can corrode through and leak. Any 3 jaw puller will do the job. There was a freeze plug out and I popped it back in. Jun 20, 2009. 0L water leak from rear of engine. it only leaks water when running take about 5 minutes than it starts spraying around the coupler I cant see it leaking because of coupler seals but not sure if it a hose that I cant see in the well wher the exhaust is. A crack in the manifold would 100% cause water in the oil. Nov 7, 2021 · What you should do: A good start is to remove and rebed (caulk) deck hardware every seven to 10 years as a routine maintenance item. are these two connected or do i have another problem with the cyl getting water intrusion? which May 26, 2010 · There is meant to be water coming from that area. A little waterfall from the bottom of the Gimbal Housing inside the boat while in the water. New boat to me, 2012 266 Discovery, Mercruiser 350 MPI, Bravo 3. There probably are a couple of drain holes there as well. Thread starter [email protected] Start date Jul 11, 2011; J [email protected] New member. Final verdict - just for future reference for anyone else experiencing this - it turned out to be a "bump" in the paint which caused a high spot - enough for the area around the o-ring to not seal properly. If I shut the boat down and anchor. Re: Mercruiser 3. There seems to be an opening of some sort in the engine block behind this motor mount and the water seams to be coming from this opening. Sep 9, 2008 · 291. I also have a slight waterleak coming in somewhere in or around the Stern drive. 0 LT Mercruiser exhaust manifold water leak. I have leak into the bilge through a hole in the transom where the trim cylinder lines run out to the drive. Feb 21, 2019 · Saltwater freezes typically at temperatures below 27 degrees Fahrenheit. Absolutely normal as long as it isn't an excessive amount of water like gushing out. All this time, running only for a short period of time without water connection checking temperatures, ( I could always touch the exhaust manifold with my bare hand during this process),and with out the out drive attached. Check the exhaust riser gaskets and inspect the elbow also to make sure water isn't going past the gasket into the exhaust. 09-09-2019, 04:37 PM. With the engine off, try reaching to the bottom side of the " Y " . After they scraped down the high spot, it sealed fine. Sep 9, 2008. Apr 12, 2020. The remainder with air. While in the water, it leaks with both engine off and on. Apr 14, 2008 · Messages. Jun 1, 2008 · Preparing to put boat in water, put "ears" on, turned on water, engine runs very well, when checking water intake & return from motor, noticed a 2nd spray of water at the intake area. "I have an 1989 OMC 5. A freshwater, anti-freeze cooled engine would only have some raw water in the oil cooler and the heat exchanger. 3 engines may exhibit starting problems, leaving boat owners stranded at the dock. Many will tell you need a new pump (Part No 3812520) but for $25 as opposed to $350 it is Jan 22, 2017 · 12,345. Model #35524 Just finished a rebuild of the carburetor, using Johnson/Evinrude carb kit 439074. Apr 4, 2008. I just bought my second boat, a 1998 Mariah Talari 216 cuddy. If 25% of the volume is filled with air, the fuel/oil mix would be around 37:1. If fresh water then you could just drain and refill with fresh fluid every week or so until fishing season is over and you can replace the seals. May 21, 2006 · May 22, 2006. Apr 23, 2012 · Volvo Penta eventually replaced the engine but it wasn't easy. where the shift cable tube passes through the transom. seeping but its still leaking. Aug 16, 2014 · About 10 minutes later (after coming back out of the garage with the port outboard lower unit), I noticed a lot of oil leaking out of the starboard engine. That fixed the problem in that area. Sep 19, 2003 · 1989 20'renken boat with 1989 OMC Cobra sterndrive. Mar 6, 2009. Start the Boats Engine. There is a 1/8" through hole in the transom assy on the port side next to the drive shaft that connects to the engine coupler. May 23, 2004 #1 I have a Alpha 1 Apr 23, 2012 · Remove oil and filter, and put in fresh. The tend to crack below the head gasket about a half inch or so down. Aug 21, 2010 · 5,265. I a 95 Merc 25hp outboard vin#OG154735, I had a bad water leak coming from the lower end and assumed it was the impeller pump, so i dropped the lower end, removed the housing and found a completely shot pump, got a entire new kit replaced and reinstalled on engine and Mar 10, 2018 · I have a 60hp Mercury 4stroke engine that is leaking at the rubber tube on the lower unit and a stream of water is flowing below it from a small hole. 4L (454) carbureted engines, FWC full closed cooling system with inboards and 625 hrs. Re: Stop Leak in lower unit? If it's salt water then you better go ahead and replace seals right away. Your marine patrol or marina manager can point you to the closest one. It might work for you if you don't run the boat very hard. Oct 29, 2006 · Your water supply to the muffs on the drive leg should be adequate to cause some leakage around the muff edges while the engine is idling. If you do no water sports and take a cruise somewhere and take no waves into the boat, the boat should be dry. I absolutely love my boat and it has been perfect except for the water leak I haven't been able to track down. bornagainboating. Boat Model. A boat left in the water overnight should be okay. Mercruiser 280 4cyl 3. Supplies needed. Rod". I'd put in the plugs, and start it up. I had the engines surveyed prior to the purchase and was told both engines had bad cylinder compression due to water intrusion and required top end engine rebuilds. I believe it is the Alpha 1 outdrive. Just makes you scared something terrible is about to happen. There are a LOT of different items "Behind the engine" that can be leaking water into the boat. Jun 25, 2012 · Transom leaked and boat has structural issues = water. Does anyone know where I could be getting water. 0 Mercruiser leaking water under exhaust manifold. Messages. All my bellows were new in August 2009. Aug 31, 2009 · Aug 31, 2009. I had the same issue, except my crack started on the inside and was leaking water into the oil and eventually started leaking out of the side of the block. I'm thinking of pulling off the powerhead, replace the spacer plate Aug 5, 2011 · Aug 5, 2011. Boat started taking on water. Jan 8, 2018 · Feb 25, 2018. Possibly the O-ring was bad. The riser, which is shaped like an inverted “U,” is sometimes located at First, the bases should be removed entirely. Re: Water leak inside engine cowl-1994 50 hp Force. One of the most common on older boats is the ujoint bellows. If so you will have to pull that engine. #2. Now there is a smaller leak in another area. If no water gets in the oil, the block may be fine. Use absorbent pads to soak up the fuel, and then carry them in buckets to a hazardous-waste disposal site. 5 years later the engine running temp began to rise a small amount and soon after the raw water pump started to leak. See full list on watercraft101. 24. Plenty of details and part numbers on here, do a search. 23' Glastron 5. Bob_VT suggestion to bounce on the Motor to see if the transom flexes is a good one. Since you are already getting water intrusion I imagine your transom is wet too. how major? You probably have a bad ujoint bellows. Usually you get water in the middle 2 cylinders (#3, #5 for example), but seeing what the exhaust ports look like is a starting point. I have a 1991 bravo 1 out drive on my boat. 7 mercruiser and an alpha one gen 2. You could use some 3M 4200 or 5200 to temporarily stop the leak. Once the source of the water is identified, boat owners can take appropriate measures to prevent further damage and repair the engine. It was blocked off before the manifold and no leaks after 3 minutes. Jan 22, 2017. I've also read that is a main cause of water leaking into the bilge. Aug 20, 2007. Aug 18, 2015 · Test Method. Dec 28, 2018 · This spring I purchased a 1997 Cruisers 35' boat with twin Mercruiser 7. Thread starter Randy Thelen; Start date May 23, 2004; R. 1. The first step is to determine the source of the water and how it got into the engine oil. New thermostat, o-ring & cover on the way. Run the motor, and it runs fine, idles fine. Do you think it is another freeze plug or does it sound more like a cracked block? The oil looks good and the motor sounds good - there is just a stream of water Aug 28, 2013 · 63. I replaced that pump and cleaned the heat exchanger. Sep 8, 2010 · Sep 8, 2010. Sep 24, 2019 · Joe, it states in my manual which is specific to the 2000 40-70 HP (P/N 787069) to 'Lightly coat both sides of a new cylinder head gasket with OMC Gasket Sealing Compound. You should have used sealer in there. The engine block performs a number of functions, including assisting with the pumping of water from the radiator to the different parts of the engine to cool them down; housing pistons in several cylinders that move the vehicle’s crankshaft; sealing in the lubricating oil via the oil pan attached to the bottom, and acting as the housing for New member. #5. grab a flashlight and a mirror on a stick and see where on the transom the water is coming from. Dec 24, 2014 · Water Leak! By kx250frider617, December 24, 2014 in Maintenance, Tech Info & Troubleshooting. #8. 7 Cobra. Hope that the second thing is the problem cause the third problem could be a cracked manifold. Hi, guys, new to the site and looking for a little help. The leak is coming from the transom seal because it is leaking at the bottom of the outdrive where it mounts to the transom. It was definitely leaking but I'm not sure why. The boat was stored with this drain plug on the low side of the garage to aide in water drainage. It’s powered by a carbbed 5. There are "slots" at the mating surfaces of the lower unit and housing on my motor for water to come through. Pulled off outdrive, removed and checked drive bellows, exhaust bellows, and shifter bellows. The manifold s two piece jacket, the exhaust water should be completely separated,no air/water should pass between the two, plug the outlet side jacket with caulk backer wedge between the water jacket and exhaust wall, and plug the water inlet, the idea is to make as much as possible an air tight seal between the water jacket and May 21, 2018 · I hate it when 1992 5. 62,321. The area where the hull is joined to the deck is also a potential leak point, especially if the boat has been damaged or hit. Got it back together, making sure the Aug 3, 2013 · Aug 2, 2013. Overheating: Overheating can be a serious concern, especially during hot summer days. It was probably dirty and clogged before as to why you didn't see it then. Travaco Gluvit Waterproof Epoxy Sealer. the leak will stop. This is the reason why you need to inspect the boat thoroughly before and after you take it out. At this point, once the water is turned on and running to the outboard unit, the boat can be started. Once you have the seals out, get a bright light and your wifes' best spectacles. foodfisher said: Check your head bolts for proper torque. A little unclear on the water path. All V-8 and V-6 engines, for instance, have a separate exhaust manifold along the side of each cylinder bank. If it leaks the next time I run it, I will replace the gasket and double check for Jun 20, 2013 · 62,321. This assures the pump is picking up sufficient water. You probably have water in the gear lube also, have you checked? It is a big job. To test, does it leak when on the muffs or only when the boat is in the water? If it still leaks when on the muffs and the boat is out of the water then it is likely not a transom leak but a cooling water leak. When it leaks, it allows water to come into the boat through the gimbal bearing and washing out the grease. However, there is no problem if it leaks. When I put it in the water to day for a test run, I noticed water entering the boat around the bellhousing. The exhaust, which contains both burnt/unburnt oil and gas, goes right out the prop. According to the BoatUS Marine Insurance Claim files, leaks in the fuel lines are the most frequent cause of diesel fires (Seaworthy, January 1990). In years past I've repaired some freeze damage on 4 cyl. Sep 30, 2011 · Its a 1961 Evinrude Lark III 40hp. Randy Thelen Guest. Apr 14, 2015 · Likewise, if your boat’s on a trailer, don’t dump fuel onto the ground. I had posted a while back about water in the oil. Check with a hose, but you may have to look behind built-in furniture or lockers. 0. The welch plugs were removed for this. where the y-pipe attaches to the transom assy. I can faintly hear it. . Re: Water leak around drive shaft. #20. I see a lot of folks asking for a simple way of testing their exhaust manifolds for leaks so I thought I would share a method I have been using for several years that is both easy and almost fool proof. where the two cowlings meet in the front water is flowing up out of the cowling and over the transom bracket but not getting in the engine compartment. Re: Water coming out between lower unit and midsection. I think that the garden hose hookup line connects to the same cooling lines that are fed by water pressure from a pickup near the impeller. I detected a small leak 3 years ago on the replacement engine and had the raw water pump immediately replaced. Every clamp was tight, not tears or cracks in anything. The intake valves would suck in water that's leaking into the exhaust. 3l mercruiser with alpha one gen2 drive. Try to tighten the bolts easy does it, hope thats what it is, if not got to replace the gasket, to do that the manifold got to come off with the riser in one piece hopefully. Jun 1, 2008 · None visible. You will need to replace the bellows, ujoints, gimbal bearing, possibley the input shaft yoke and seal in the drive. Re: Exhaust manifold leaking. Probably a cracked block from improper winterization. Oct 12, 2013 · Oct 13, 2013. Jun 21, 2021 · Once water is going to the intake ports the boat can then be started. There was a freeze plug out an. Aug 6, 2012 · Aug 6, 2012. Just finished rebuilding the engine and put new manifolds and risers on. This could be due to issues with the battery, ignition system, or starter motor. The exhaust pipe leads down from the engines exhaust elbow to the inner transom. Water gets collected in the bilge either due to loose screws, damaged bellows (on sterndrives), loose hose connections, loose rub rail, livewells, leaks on the hull, faulty seacock/thru-hull, loose drain holes/plugs, leak in a cooling system, bad seals on the prop shaft Feb 2, 2009 · my #3 plug is showing signs of my #3 plug is showing signs of water intrusion. Wow. I cleaned it all up, w towels, etc. That's what you need to search on. Follow recommended methods. If the holes are oversized, a rigid attachment cannot be obtained. M. You could have a small hole developing. 0 water leak? Help! Thread starter StartingToHateI/O; Start date Jun 12, Apr 11, 2009 · Apr 11, 2009. 11. Nov 8, 2023 · Leaks generally take time to be noticed, and it may be hours or even days before you notice one on your boat. #4. Water in bilge after running for an hour. I had to replace my motor, due to the crack on the inside, but I believe @Seadeals JB Welded his with success. Ran motor with ear muffs, no water leaks and engine runs fine. Brought boat home, parked it on a hill and filled the boat up with water until i saw water leak on the outside. Jun 29, 2016. Steel injection lines can corrode and develop leaks, and should also be examined and replaced as necessary. 5,617. Gasket's bolts that deals with water passages needs to be re torqued to factory specs after break in period has ended and occasionally from time to time Happy Boating. Freeze plugs are all good, and no signs of a cracked block. If you mean between the lower unit and midsection, that's normal. HTH, Mark. Thanks, they all check out fine at 225 in/lbs and the head gasket was done about 3 years ago. Re: 3. dry as a bone when I left it. I just want to be sure that ladyboater understands there are 2 different pumps, sounds like they may be confused. Apr 15, 2008. com Water can also leak into the boat from a corroded exhaust pipe. The hull-deck joint can be tricky to reseal, so eliminate all other leak ideas beforehand! Jan 20, 2024 · This article offers a comprehensive guide to troubleshooting boat engine oil leaks. When it leaks out of the weep hole, it's time to replace the pump. Aug 21, 2010. I have no experience with the stop leak products for marine applications, but if May 17, 2010 · Clint1973. Jul 20, 2007 · Messages. Water tell tale in the back of the motor spits water out real good about 20 feet behind the boat and the water gets luke warm after about 5-10 mins of operation, all lower unit Jun 9, 2012 · It turned out to be the water pipe that goes through the transom had corroded and was leaking just inside the boat. Searching should yield some results. There is a place for a hose on the bottom of the manifold but that is capped off on both manifolds. It's the bellows. Oct 25, 2009. Pulled to "mechanic" who stated a new gimbal bellows would fix problem. Re: Mercury 25hp leaking oil HELP FIXED. You’ll find information on what causes oil leaks, the signs to look out for, how to diagnose them, and most importantly, how to fix them. Jan 1, 2009 · Mar 7, 2009. Thermostat appears to be original & looks like the engine wasn't flushed properly. At first, I thought it was my perk flush kit. I've seen them remove the lower unit and replace the bellows and gimbal housing and it looks like it doesn't take much time or effort. The riser, which is often shaped like an inverted U, is located at the aft end or centered on top of the This engine is fed through the stern drive pump and is raw water, To-day I was at the boat and took both exhaust manifolds out and they where both wet where they mate with the engine ports. Feb 9, 2016 · Hull-deck joint. 0L Leaking Water. I filled them up with water and ran water through them and seen no sign of leaks. 3GL-E. Starting Difficulties: Occasionally, Mercruiser 4. So, new bellows installed - still leaks. Run a bead around the housing and the transom. GM blocks and manifolds. 2. I brought the boat home and filled the bilge with water. Sep 13, 2019 · Hi everyone, long tome reader, first time poster. I engine noises, starts right up. Jul 4, 2005 · That fact combined with the no "Milk in the oil" equals a high probability that my U-joint is OK. 4. Exhaust manifolds and risers are large metal castings that carry hot exhaust gasses away from the engine block on inboard engines. Apr 21, 2006 · Apr 21, 2006. I didn't run the boat more then an hour after noticing the leak, so maybe a little water got on the Gimbal and not the rest of the stuff. To check the pipe for leaks, haul the boat out of the water and run the engine on a garden hose. sq jl zf ej qt zv fm bb vq eg