Diagnostic Information And Procedures; Fuel System Diagnosis - Suzuki GSX1300BK B-King Service Manual

Fuel System Diagnosis

Condition
Engine will not start or is
hard to start (No fuel
reaching the intake
manifold)
Engine will not start or is
hard to start (Incorrect
fuel/air mixture)
Engine stalls often
(Incorrect fuel/air mixture)
Engine stalls often (Fuel
injector improperly
operating)
Engine runs poorly in
high speed range
(Defective control circuit
or sensor)

Diagnostic Information and Procedures

Possible cause
Clogged fuel filter or fuel hose.
Defective fuel pump.
Defective fuel pressure regulator.
Defective fuel injector.
Defective fuel pump relay.
Defective ECM.
Open-circuited wiring connection.
TP sensor out of adjustment.
Defective fuel pump.
Defective fuel pressure regulator.
Defective TP sensor.
Defective CKP sensor.
Defective IAP sensor.
Defective ECM.
Defective ECT sensor.
Defective IAT sensors.
Defective AP sensors.
Clogged ISC valve air passage way.
Defective IAP sensor or circuit.
Clogged fuel filter.
Defective fuel pump.
Defective fuel pressure regulator.
Defective ECT sensor.
Defective thermostat.
Defective IAT sensor.
Damaged or cracked vacuum hose.
Damaged or cracked ISC valve.
Defective fuel injector.
No injection signal from ECM.
Open or short circuited wiring
connection.
Defective battery or low battery voltage. Replace or recharge.
Low fuel pressure.
Defective TP sensor.
Defective IAT sensor.
Defective CMP sensor.
Defective CKP sensor.
Defective GP switch.
Defective IAP sensor.
Defective ECM.
TP sensor out of adjustment.
Defective STP sensor and/or STVA.
Defective EXCVA.
Correction / Reference Item
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Check and repair.
Adjust.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Repair or replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Replace.
Repair or replace.
Repair or replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Fuel System: 1G-4
B823H11704001