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#166622
johnyrude200
Participant

    Yes Frank, it happens when I test compression with all plugs out except for the cylinder I have the testing gauge plugged into. With all plugs out, this does not happen. I’ll give it a try with all plugs in too and report back.

    The odd thing is I ran a compression test in this manner and it worked fine. I pulled the motor apart to replace a single rod/piston/rings, and then this issue arose.

    I have seen this happen with other motors before when trying to start them, and they were all the same 60° looper design. Perhaps just a coincidence…