In Reply to: 2000 Mercury 8 hp posted by Warlo_527 on April 29, 2002 at 04:43:01:
Try the basic fixes - Carbarator spray, get a 55 gallon barrel and set up the motor to run - adjust the needle (air fuel mixture). The backfiring is caused by gas not burning in the cylinder and then firing in the exhaust instead. Use gas stableizer all the time - this will help with the tarish from building up. Sometimes just running the motors often will help remove buildup. Good luck.
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