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motor compression


arnold wente

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Does anyone know what the compression  on a 2021 HD 8 should be thanks in advance

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10.3:1 should be about 150psi, if that is the same engine that i found a spec for online.

either way, 130-150psi should be what a good running engine has.

steve

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i see you had the fuel pump question as well.  did you pump out the fuel and add new?  is it still just popping?

steve

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my nephew found problem checked compression with leak down compression tester and found that valves needed adjusting had 11,700 miles on it never had them checked now adjusted and starts great and runs great thanks for compression info

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glad you got it running, that is quite a few miles on it.

steve

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