Suzuki GSF650A Service Manual page 85

Condition
Engine stalls often (Fuel
injector improperly
operating)
Engine stalls often
(Control circuit or sensor
improperly operating)
Engine stalls often
(Engine parts improperly
operating)
Engine noisy (Excessive
valve chatter)
Engine noisy (Noise
seems to come from
piston)
Engine noisy (Noise
seems to come from
timing chain)
Engine noisy (Noise
seems to come from
crankshaft)
Engine noisy (Noise
seems to come from
clutch)
Engine noisy (Noise
seems to come from
transmission)
Engine noisy (Noise
seems to come from
water pump)
Possible cause
Defective fuel injectors.
No injection signal from ECM.
Open or short circuited wiring
connection.
Defective battery or low battery voltage. Replace or recharge.
Defective ECM.
Defective fuel pressure regulator.
Defective TP sensor.
Defective IAT sensors.
Defective CKP sensor.
Defective ECT sensor.
Defective fuel pump relay.
Defective ISC valve.
Fouled spark plugs.
Defective CKP sensor or ECM.
Clogged fuel hose.
Out of adjustment tappet clearance.
Too large tappet clearance.
Weakened or broken valve springs.
Worn tappet or cam surface.
Worn and burnt camshaft journal.
Worn down pistons or cylinders.
Combustion chambers fouled with
carbon.
Worn piston pins or piston pin bores.
Worn piston rings or ring grooves.
Stretched chain.
Worn sprockets.
Tension adjuster not working.
Rattling bearings due to wear.
Worn and burnt big-end bearings.
Worn and burnt journal bearings.
Too large thrust clearance.
Worn splines of countershaft or hub.
Worn teeth of clutch plates.
Distorted clutch plate, driven and drive. Replace.
Worn clutch release bearing.
Worn or rubbing gears.
Worn splines.
Worn or rubbing primary gears.
Worn bearings.
Worn or damaged impeller shaft.
Worn or damaged mechanical seal.
Contact between pump case and
impeller.
Too much play on pump shaft bearing.
Engine General Information and Diagnosis:
Correction / Reference Item
Replace.
Repair or replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Clean.
Adjust.
Adjust.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace thrust bearing.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
1A-10