brucebuck1
30.05.2021 13:00:32
So far, all the likely suspects appear negative. Gas in the oil will just thin the oil, and make it smell. It will not make it foam. here
See full version: Mercruiser 3. 0 water in oil
So far, all the likely suspects appear negative. Gas in the oil will just thin the oil, and make it smell. It will not make it foam. here
Assembled everything back together. Replaced riser gasket. Added cheap 10w-30 just to wash out water, starter, and ran it for 10 minutes in idle. Checked the oil, level of the oil did not change, it still has some water in it, not as much kinda mixed in there, guessing from what was left. How many times should I do the flushing? [links]
Is it possible the water was sitting under the valve cover or elsewhere and when I started it just slipped into the case?
Or maybe my oil was always milky, just not mixed yet, and when I pulled the dipstick it was fine for just that one moment and when I started the boat i mixed all the water with oil? [links]
pull your manifold and focus there now. you most likely have an issue at the manifold to riser joint or a crack in the manifold more
pull hose from transom shield and hose going to exhaust. put a tee in a new hose, install the hose with a tee between the nipples that you just pulled the other hoses off. more
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Problem seems minor but cant figure it out for the life of me. The whole story is this. Tow rope got caught in the intake..flipped the jet ski over to cut the rope and unknot. 2 people pushing down the back part of the jet ski while removing the rope. water rushes into the engine compartment somehow..submerges the engine. back end of jet ski is sinking..only top part is floating..beach it. drain water out. ski wont start. removed spark plugs. cranked engine and alot of water shot out of the engine. cleaned spark plugs..put them back in. flushed engine and took it out..it was fine. took it out for one day. no problems. alittle dragging..seems like having trouble getting into gear at low speed. 2nd day. at low speed or idle..i hear POP POP somewhere in the engine..(seems like a misfire sound") every 20-25 seconds. but no sound at high speed..ran it for like an hour..then it stalled. Tried to start it back up. it starts up for 5-8 seconds with VERY LITTLE POWER and eventually dies. start back up..i gas alot. moves 2mph and then dies. opened the seats..alot of smoke came out but no overheat sensors came on..not sure if its just vapors..everytime u give it 20min or longer rest. it starts back up. not sure whats wrong.more
Okay. so i changed the oil. put crap oil in to flush it out..then i put the synthetic oil. changed the oil filter, changed the spark plugs, changed the gas and took out milky white stuff from the hoses of the oil catch can. GOOD NEWS. the jet ski will run and idle no probelm ON DRY dock (land). BUT. once u put it in the water. it stalls and shuts down. this leads me to believe it has something to do with the intake. HELP! ANYBODY PLEASE! much appreciated.
[links]
If you have an external leak you will notice coolant leaking from in between your engine block and the head. This usually will happen just below the exhaust manifold or the intake manifold. You may notice the leak while the vehicle is not running but it will most likely be noticeable when your engine is running and warmed up as steam spraying out from the motor. more
When your head gasket blows it will allow engine coolant to escape either out of your engine as an external leak or into the combustion chamber of your vehicle. In either case, the escape of the hot coolant through the gap in the gasket can cause pitting or deformation of your cylinder heads or engine block. If you were simply to replace the broken head gasket with a new gasket your engine would still not be sealed properly as the pits and warping of the engine block or head would still allow coolant to leak past the new gasket. In some cases, you can remedy this problem by machining the engine block and cylinder heads to remove the pits and make sure they are flat and smooth. This process is not only expensive and time consuming, but there is only a certain amount of machine work that can be done before the block or heads are not usable anymore and your vehicle will need a new engine.
To make sure you do not get to the point of this kind of damage, you need to know the signs of a blown head gasket. Whenever the head gasket is blown, the problem is leaking coolant. Coolant either leaks past the head gasket out of the engine or past the head gasket into the cylinder and combustion chamber.
Now that you know the signs of a blown head gasket you can catch it quickly before you do permanent damage to your engine. If you notice a small leak it is also possible to fix it without ever removing your head gasket. BlueDevil Pour-N-Go Head Gasket Sealer is an easy to use product designed for small head gasket leaks. BlueDevil Pour-N-Go Head Gasket Sealer is easy to use even if you’re not mechanically inclined and can save you a significant amount of time and money. [links]
My water pump failed, causes the engine to overheat, burned through the rubber, melted the shift cable and bellows and some other parts. [links]
Mine wouldn't start because the shift cable detent was in the wrong position due to excess friction in the shift cable. Mercruisers have what seems like a hack where the ignition coil is grounded while shifting under load so that it can get out of gear.
Any youtube links / examples of someone replacing the temperature sensor on the exhaust manifold. more
Upon inspection, the exhaust HOSE had a tear in it. It looked heavily melted. (see third photo)
Why might the base of the exhaust manifold be leaking a small bit of water? Is there something I missed / should apply to this area? more
I notice a small leak coming out of the exhaust manifold. You can see this in the last picture. (see second last photo)