Reply To: 1956 Johnson 30 hp won’t accelerate boat up on plane!

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November 26, 2020 at 9:58 am #221629
BROOK E. NEWCOMB
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    Jeffrey,
    I know you said you are getting good spark, but have you tried swapping the plugs out with another set?
    In the past I have experienced plugs that would “air fire” grounded out against the block but not under
    compression when installed in the motor.

    Just a thought.
    Respectfully,