Water in oil, again

omcfl

Recruit
Joined
Nov 21, 2022
Messages
2
I have an OMC 2.3L and it has made my life hell trying to figure out why I continue to get water in the oil. The following has been done:

1. Replaced head gasket (mag tested)
2. Replaced gasket on exhaust manifold and sanded flat at the intake

Two of the cylinders did have water in them as well as in the oil. I spoke to a mechanic and he said it must be an internal crack in the engine block. He says even a compression test could pass and there still be a crack.

Question -

1. Are there any other tests that can be done to confirm the issue is inside the block?
2. Has anyone had success with using a block repair like this
?
 

Scott Danforth

Grumpy old guy who plays with boats
Joined
Jul 23, 2011
Messages
41,999
check the exhaust manifold (its potentially NLA)

check your elbow to SWL measurement. if your boat is waterlogged, the back of the boat could be sitting lower allowing water in

do a compression test and a cooling system pressure test.

there is no "mechanic in a can"
 

mvn

Petty Officer 2nd Class
Joined
Jul 25, 2007
Messages
163
There might not be a "mechanic in a can" but I found this......
 

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Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
69,455
I have an OMC 2.3L and it has made my life hell trying to figure out why I continue to get water in the oil. The following has been done:

1. Replaced head gasket (mag tested)
2. Replaced gasket on exhaust manifold and sanded flat at the intake

Two of the cylinders did have water in them as well as in the oil. I spoke to a mechanic and he said it must be an internal crack in the engine block. He says even a compression test could pass and there still be a crack.

Question -

1. Are there any other tests that can be done to confirm the issue is inside the block?
2. Has anyone had success with using a block repair like this ?
Ayuh,..... Welcome Aboard,..... To test the block for a crack, drain it, isolate the block by blockin' hoses, etc, then pressurize it with 'bout 15 psi of air,...
You'll hear the crack, follow the sound to the problem,.....

'n Nope, there's no magic in a can that'll work,....
 

tpenfield

Supreme Mariner
Joined
Jul 18, 2011
Messages
16,075
The fact that water has gotten in the oil more than once might be all the test you need . . . :unsure:

Cooling system pressure test would be the next thing to test.
 
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