Reply To: 6 hp Johnson no fire

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May 25, 2020 at 4:50 pm #204034
ROBERT T.
Participant

    US Member

    Engine ran fine last summer. plugs were new then.
    Today, when the lower cylinder obviously was the one not running. Cold to the touch. I pulled both plugs and grounded them against the block.
    Both of them fired.
    If lower ignition set will not fire plug under compression how do I tell? And why would that happen in the first place? Thanks for your input.