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Old 01-07-2018, 11:49 AM   #2
mike657894
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Join Date: Oct 2015
Location: Bay City Michigan
Posts: 1,050
Default Re: Interpreting Compression Test Results

Your hot number is more important than the cold number with oil. I wouldn't worry about my cyls if those were my numbers. Have you given it a good tune up. are you sure your intake is sealed perfectly? I had a valve that was causing a slight problem and its top is white where the good vavles were black.


edit: Is it noisey when you rev it? Are you thinking you have blow by from worn cylinders? I dont know how my car would have performed on the bag test I hadn't heard of it till now but makes sense. My engine is out right now due to worn cylinders. But it probably would have continued to run. The model a rings are large and heavily sprung so they will follow a egged cylinder.

Last edited by mike657894; 01-07-2018 at 11:57 AM.
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