4.3L OMC leaking water.

GuyAlexander20

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Jun 28, 2020
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I have a 1990 OMC 4.3L . I was putting antifreeze in and I notice water coming out by the motor mount . Is this a cracked manifold or cracked block. Could not tell, there is no water In the oil.
 

Bondo

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Apr 17, 2002
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I have a 1990 OMC 4.3L . I was putting antifreeze in and I notice water coming out by the motor mount . Is this a cracked manifold or cracked block. Could not tell, there is no water In the oil.
Ayuh,..... Welcome Aboard,...... It could be a cracked block, But,....
There's a core plug, right behind the motor mount too,......
If the core plug popped out, that means it froze, 'n the block maybe, or maybe not cracked,....
Further investigation is necessary,.....
 

Scott Danforth

Grumpy old guy who plays with boats
Joined
Jul 23, 2011
Messages
36,648
I have a 1990 OMC 4.3L . I was putting antifreeze in and I notice water coming out by the motor mount . Is this a cracked manifold or cracked block. Could not tell, there is no water In the oil.
how did you winterize the boat last year?
 

Lou C

Fleet Admiral
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Nov 10, 2002
Messages
8,241
Drain and poke holes, or suck AF up the drive with the handy dandy crack the block kit?
 
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