Troubleshooting - Sym PA12B Service Manual

Troubleshooting

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