water in oil how where ?

[Alfred jobs]

I have a 1991 3.0 cobra. It runs good comp is 160 +/- on all 4cyl getting water in #4 . i pumped 15psi into the head and block its still holding after 8hrs and when i crank it runs great for about 10min and then fouls the plug.Pull plug and water on #4 .Could it be the manifold or what ?

 

[Bt Doctur]

Re: water in oil how where ?

The exaust riser most likely has a hole in it, remove and inspect for holes and any wetness. that allows water to foul #4 plug.

 

[coastalcruiser]

Re: water in oil how where ?

Check out the riser Gasket! I found mine with the gasket folded over.....

 

[lowkee]

Re: water in oil how where ?

Welcome to the 'not-so-professionally-installed' club. We're growing in membership by the day.

I'm replacing my transom becasue whoever installed the transom plate bent the gasket and let water leak in.

Glad you found the problem quickly.

 

[Alfred jobs]

Re: water in oil how where ?

Hey i fogot im takeing water in the oil sorry it was late would it be the same problem again sorry for leaving this out

 

[coastalcruiser]

Re: water in oil how where ?

You have another post about your manifold needing to be replaced, if you have water in your cylinders drain the manifold-risers take the spark plugs out crank the engine, water will shoot out. I would then spray inside the holes with penetrating oil to prevent rust then replace the manifold and risers right away.

 

[Alfred jobs]

Re: water in oil how where ?

thanks for the tip i wouldn't have thought about the water in the cyl's

 

[Bt Doctur]

Re: water in oil how where ?

Did you remove the riser to check for holes yet?
The longer water stays in a engine the higher the repair bill.

 

[Alfred jobs]

Re: water in oil how where ?

Yes i took off the riser and manifold it was the manifold ,middle ex has a crack .I filled with water and leaked out in ex now i need a manifold used would be nice but new wold be better ? the castings on it are not found anywere can you all help #'s 986518 --A-- this is under the #s and a raised stamp looks like P/F or R/F in front of the #s

 

[Alfred jobs]

Re: water in oil how where ?

would this cause a lot of water in the oil ? I pumped up the block to 15psi and it held when i checked the oil its about 2qts over that sounds like a lot to me thanks