Honda GX390 compression leak


Old 08-15-16, 09:54 AM
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Honda GX390 compression leak

I have a honda GX390 where compression pushes threw the valve cover pvc tube with oil. I first changed the head gasket, which was fine, than i ran a compression test with the exhaust valve disconected, and im getting 70-75 psi with leak down(leaking). My question is, can it be the head, or is the engine scraped. The motor has 300 hrs on it, small tracter.
Thank you guys
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Old 08-15-16, 11:10 AM
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Join Date: Jul 2001
Location: USA
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Put some oil in the cylinder and see if it keeps leaking as badly.

That's a pretty bullet proof engine, I wouldn't think the engine is junk but you never know. What happened prior to this? Did this happen all of a sudden? Run low on oil? Etc...

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