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18 command fouls plug


dave7016

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Bought a newer sovereign and it has 170psi compression both sides but the rh (as sitting on tractor) has fouled the new plug in less than 3 hours of use??? Runs great no smoke...what gives? Thanks Dave.

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put a new plug in tonight and runs better for now. Thinking hotter plug or possible coil or issue with head or ??? How to test a coil on a command????

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