You may find that it goes away by either:
Replacing the spark plugs
Richening up the idle mixture
Rebuilding the carburator
Adjusting the valves
Running some "Seafoam" or Chem-tool through the tank
Using a plant mister to squirt a small amount of water into the intake when the engine is idling (but not enough to stall the engine)


Paint & Body Shop moderator
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