ENGINE
2.27
SPARK PLUG FOULING
S
Spark plug cap loose or faulty
S
Choke cable adjustment or plunger/cable sticking
S
Foreign material on choke plunger seat or plunger
S
Incorrect spark plug heat range or gap
S
Carburetor inlet needle and seat worn or leaking
S
Jet needle and/or needle jet worn or improperly adjusted
S
Excessive carburetor vibration (loose or missing needle jet locating pins)
S
Loose jets in carburetor or calibration incorrect for altitude/temperature
S
Incorrect float level setting
S
PVT system calibrated incorrectly or components worn or mis-adjusted
S
Fuel quality poor (old) or octane too high
S
Low compression
S
Restricted exhaust
S Weak ignition (loose coil ground, faulty coil, stator, or ETC switch)
S ETC switch mis-adjusted
S Restricted air filter (main or pre-cleaner) or breather system
S Improperly assembled air intake system
S Restricted engine breather system
S Oil contaminated with fuel
S Restricted oil tank vent
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