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Mercruiser 454 rebuilt leaks oil

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postasi

New member
My rebuilt Merc 454 leaks oil after only 90 hours. All obvious fitting and orifices appear tight without evidence of cracks. Pulled TX, but did not find leak around rear main seal.

Suggestions?
 
postasi said:
My rebuilt Merc 454 leaks oil after only 90 hours. All obvious fitting and orifices appear tight without evidence of cracks. Pulled TX, but did not find leak around rear main seal.

Suggestions?
Click to expand...

Ayuh,.... Find the leak, then fix it, We can't see it from here,....

Oil, like water, flows downhill,...
Keep lookin' higher til ya don't see any oil, that's where the leak is,...
 
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