Quote:
Originally Posted by Young1
Decided to put new plugs in my 50,000 miles Z today so did compression check also.
Left bank 240,240,240,245
Right bank 255,250,258,260
Why is the right noticeably higher? Cam timing? Machine error? Gasket thickness?
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While any of those things could cause the left-right issue, I suspect something is wrong with your tester. Unless the car has been modified, your readings are excessively high. Normal, sea level readings should be ~210 to 220psi. Try a different compression gauge and see what happens. I’ve run into more than one gauge that was bad.
H
