Quote:
Originally Posted by JM 35 Sedan
Jan, if you are running air cleaners/filters, make sure they are not too restrictive.
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Agreed. I had a sooty plug problem that turned out to be a choke plate that wasn't opening 100%. You'd be surprised what a big difference a little restriction can make.
Try this to read your plugs: Take a cruise, warm up the engine, get on a nice straight road section. Go wide open throttle for a short distance, kill the engine with the ignition key, coast to a stop. Read plugs.