ENGINE
2.28
TROUBLESHOOTING
Engine Turns Over But Fails to Start
S
No fuel
S
Dirt in fuel line or filter
S
Fuel will not pass through fuel valve
S
Fuel pump inoperative/restricted
S
Tank vent plugged
S
Carb starter circuit
S
Engine flooded
S
Low compression (high cylinder leakage)
S
No spark (Spark plug fouled)
Engine Does Not Turn Over
S
Dead battery
S Starter motor does not turn
S Engine seized, rusted, or mechanical failure
Engine Runs But Will Not Idle
S Restricted carburetor pilot system
S Carburetor misadjusted
S Choke not adjusted properly
S Low compression
S Crankcase breather restricted
Engine Idles But Will Not Rev Up
S Spark plug fouled/weak spark
S Broken throttle cable
S Obstruction in air intake
S Air box removed (reinstall all intake components)
S Incorrect or restricted carburetor jetting
S Incorrect ignition timing
S Restricted exhaust system
Engine Has Low Power
S Spark plug fouled
S Cylinder, piston, ring, wear or damage (check compression)
S PVT not operating properly
S Restricted exhaust muffler
S Dirty carburetor
Piston Failure - Scoring
S Lack of lubrication
S Dirt entering engine through cracks in air filter or ducts
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