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unequal compression

  1. R

    compression, 142 RH / 122 LH

    Hi all, I have a newly acquired 1977 with some cafe style mods. Mileage unknown. Issue is the compression check: RH cylinder reads 142 and LH 122 measured with carbs removed and again with carbs on throttle full open. plugs: RH dark black, LH nice tan color. Looking for suggestions on...
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