Sym PA12B - Troubleshooting

3. Fuel System
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Troubleshooting
Engine won’t start Late ignition timing
y No fuel in fuel tank
y Clogged fuel tube
y Excessive fuel in cylinder
3-3
y No spark from spark plug (malfunction of
ignition system)
y Clogged air cleaner
y Malfunction of carburetor chock
y Throttle cable damaged
Engine stall after started
y Malfunction of carburetor chock
y Incorrect ignition timing
y Malfunction of carburetor
y Improper engine oil
y Air leakage into inlet manifold
y Incorrect idle speed settings.
Unstable Idle speed
z Abnormal ignition system
z Incorrect idle settings.
z Abnormal carburetor
z Impure fuel
Misfire when accelerates
z Malfunction of ignition system.
y Malfunction of ignition system
y Malfunction of carburetor
Weak engine power
y Fuel system clogged
y Malfunction of ignition system
Fuel / Air Mixture too lean
y Clogged carburetor jet
y Carburetor parts stick and closed
y Malfunction of float valve
y Fuel level too low in float chamber
y Clogged fuel tank cap vent
y Clogged fuel filter
y Obstructed fuel pipe
y Clogged air vent hose
y Air leakage into inlet manifold
Fuel /Air Mixture too rich
y Clogged air injector
y Malfunction of float valve
y Fuel level too high in float chamber
y Malfunction of carburetor chock
y Dirty air cleaner