Piston

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  • #39086
    wideattsgardener
    Participant

    I just bought a Howard 350 Rotovator there was no compression to guess valve Stu hoo removed plug to add SDme wd40 but whenI pull starter cord clutch and drive belt turn but piston remains stationary…..any ideas chaps

    #39088
    charlie
    Keymaster

    Sounds like con rod is broken or big end. The only way to find out is to strip the engine. If the piston is not moving that would explain why no compression.

    #39092
    john-e-w
    Participant

    Hmm – I had the same problem on an old car I once owned. It turned out that the piston had broken above the gudgeon pin, so the piston went up and down, but the top of the piston remained at the top of the bore with the engine constantly misfiring and the compression reduced as a result.

    Best of luck with the strip down

    John e-W

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