Very low compression - Toyota Supra Forums

03-31-2008, 08:05 AM

CyFi6

3" Exhaust

Join Date: Oct 2007

Location: SLO

Posts: 234

Quote:

Originally Posted by paulmicin

no. 1 cylinder has 50 psi while the rest are within spec. I poured some oil in no.1 and it jumped to 70 psi

20 psi is just around specs for the jump in psi with a wet test. Even brand new motors will jump considerably in compression when doing a wet test. I wouldn't say your rings are bad. Try a wet test in the other cylinders and see how much they jump up.

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