Water in oil after running

[edmii]

mercruiser 4 cylinder 84<br />After running for maybe 15 mins, quart of water in oil ? Can bad Manifold do this or do i have a more serious problem? and what test can i do to find the problem? I am ready to pull head and start there before pulling engine, but have little experience with marine engines.\<br />Please Advise Edmii@home.com

 

[DJ]

Re: Water in oil after running

Earl, what hp. is this?<br /><br />Are you also getting water in the cylinders?

 

[edmii]

Re: Water in oil after running

don't know hp think it is 140?, ']<br />water in cylinders after sitting for a while

 

[DJ]

Re: Water in oil after running

Could be several things. In order of possibilty and expense.<br /><br />1. Exhaust elbow or gasket.<br />2. Exhaust manifold or gasket.<br />3. Head or gasket.<br />4. Cracked block.<br /><br />I would start with the elbow and manifold. You can remove them and give them a good eyeball. You can also get them pressure checked at your local Mercruiser dealer.<br /><br />The 140 was somewhat prone to the block cracking between # 1 and # 2.