1979 Chevrolet Chevette Repair Question
Topics covered: Compression, Compression test.
Mileage: 28,000 miles.
Mileage: 28,000 miles.
Asked on November 29, 2011
Compression
I am doing a compression test and was wondering what is the compression supposed to be (range) for a 1979 chevy chevette? 4 cylinder
Asked by 09emdogAnswer
Replied on November 29, 2011
actually anything above 90psi. Normally anywhere from 125-140 psi. But if there is a varianceof 20% on any cylinder you have something wrong, like a valve burnt or something similar.
Replied on November 30, 2011
so how about 145 or 155? too high?
Replied on November 30, 2011
no that's good. as long as it's not like 145 on one cylinder and 90 on another.