300 Dream plugs
300 Dream plugs
Any reason one plug fowls, and the other does not ??
Oil-fouled (black and shiny), or carbon (flat black)? If oil, it could be a worn intake valve guide on that side. If carbon-fouled, I would suspect ignition since compression is OK. Swap the plugs and see if the problem follows the plug. Then swap the caps, or just install new ones. D6HA plugs are recommended and new NGK caps are cheap.
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