Water in oil 3.0 L OMC

[rodneywinebrenner]

My 3.0 L OMC had water in the oil. While I was running it I noticed water leaking under the water mainfold around the gasket. Could the gasket cause water to be in the oil or is more likely to be a head gasket or head problem. What should i test or where should I start??? Thanks so much for any help in this matter.

Rodney

 

[Don S]

Re: Water in oil 3.0 L OMC

How much water is in the oil? Any possibility it froze with water in the manifold and block?

 

[happycamper]

Re: Water in oil 3.0 L OMC

From my experience, most likely you have a rusted manifold. Water gets in the cylinders through the open exhaust valves.

My 3.0L has been very reliable over the 11 years I've owned it, except I am on my 3rd manifold.

I now fill the manifold & block with 50/50 coolant every winter.

 

[Don S]

Re: Water in oil 3.0 L OMC

From my experience, most likely you have a rusted manifold. Water gets in the cylinders through the open exhaust valves

.

He has water in the oil, not in the cylinders. Water in the cylinders would stay there or be a very very small amount leaking past the rings into the oil.
Water in the cylinders also causes a hydrolock. no mention of that either.

 

[rodneywinebrenner]

Re: Water in oil 3.0 L OMC

I drained the oil yesterday and when i pulled the plug about 1 cup of straight water came out, then all the milkey oil. When i first started running it, it was running good. Right before i put it on the trailer it was idling rough, but at higher rpm's it smothed out. Never Hydrolocked. Oil looked good before i put it in the water.

Thanks alot for you help

Rodney

 

[chiefalen]

Re: Water in oil 3.0 L OMC

What year?

Saltwater used?

Cold where you are, general area of your location?

Did you pull the valve cover?

I pulled the t-stat housing completely off the head, Shine a light into the hole, see a hole thru the wall into the pushrod hole?

Touch it with a screwdriver the wall right behind the opening.

Somewhere a water jacket is split and letting water into your oil.

Did you overheat?