Loud backfire on starting engine for first time this season
sufficient to blow fumes out of manifold!
Effect now intermittent. Compression normal, new plugs,
no obvious other problems. Suspect sticking valve? Have
lubricated upper cylinder through plug holes but cautious
about restarting again because of possible damage. Help!
sufficient to blow fumes out of manifold!
Effect now intermittent. Compression normal, new plugs,
no obvious other problems. Suspect sticking valve? Have
lubricated upper cylinder through plug holes but cautious
about restarting again because of possible damage. Help!
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