water getting in my engine 2.5 litre mercruiser120 hp

[don3456]

I got water entering engine block mixing with the oil any ideas what might be causing this? gaskets cracks or what? thank's

 

[dubs283]

Re: water getting in my engine 2.5 litre mercruiser120 hp

cracked engine block

cause = inproper winterize

 

[don3456]

Re: water getting in my engine 2.5 litre mercruiser120 hp

I got water entering engine block mixing with the oil any ideas what might be causing this? gaskets cracks or what? thank's

thank's another question when i got the boat i put the muffs on it and ran the hose and the impeller wasnt going due to upper unit gears broke after i took it apart the muffs got left on for a a good half hour with water then i noticed the water in the oil

 

[Fordiesel69]

Re: water getting in my engine 2.5 litre mercruiser120 hp

I had a crack in my exhaust manifold. Owner was nice enough to drain engine, but not the manifold.

 

[Bondo]

Re: water getting in my engine 2.5 litre mercruiser120 hp

thank's another question when i got the boat i put the muffs on it and ran the hose and the impeller wasnt going due to upper unit gears broke after i took it apart the muffs got left on for a a good half hour with water then i noticed the water in the oil

Ayuh,... That don't change the diagnosis...

Drian the block, block off the passages, 'n pressurize with Air...
You'll hear the leak, follow the sound...

 

[don3456]

Re: water getting in my engine 2.5 litre mercruiser120 hp

new to boat engines,where would the passages be?

 

[Don S]

Re: water getting in my engine 2.5 litre mercruiser120 hp

Locate the hose between the thermostat housing and the exhaust manifold. Disconnect from the manifold and plug the hose air tight.
Then locate the hose between the transom shield and the thermostat housing. Disconnect hose from transom shield and plug the hose air tight. Adapt an air pump with a gauge to 1/8" npt pipe thread and screw into block drain and pressurize the block. It should hold 15 psi if the block is good. If it doesn't hold pressure, follow the sound of leaking air.