Reply To: Check Your Plugs

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June 27, 2019 at 5:50 pm #178076
David Stanton
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    I saw that wear issue years ago on a 1965 V4 60 HP Johnson. Really old plugs on a heavily used motor. The gap got so wide that the spark found a shorter path to ground across the rotor, establishing carbon tracks on it, necessitating rotor replacement. Kind of like carbon tracking inside distributor caps on cars from the 1950s and 1960s.
    Dave