Recent content by supremei

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    Leak down testing and compression testing, OMC 225 1976 Chevy 305

    I have been doing some testing, there's a misfire I am trying to find. I thought maybe a bad valve. I did a compression test (Cold) all plugs out, throttle open. It tested between 148-158 on all cylinders, not bad, I think. Then doing a leak down test on all cylinders TDC each one, the reading...
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    OMC 225 engine size ? 305 or 350? Built 1977 ?

    Quick question, if any body can help, OMC 225 engine size ? 305 or 350? Built 1977 ?
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