Diagnostic Information And Procedures; Ignition System Symptom Diagnosis - Suzuki 2005 GSF1200 Service Manual

Ignition System Symptom Diagnosis

Condition
Spark plug not sparking
Engine stalls easily. (No
spark)
Spark plug is wet or
quickly becomes fouled
with carbon.
Spark plug quickly
becomes fouled with oil
or carbon.
Spark plug electrodes
overheat or burn.

Diagnostic Information and Procedures

Possible cause
Damaged spark plug.
Damaged spark plug cap.
Fouled spark plug.
Wet spark plug.
Defective ignition coil.
Open or short in high-tension cord.
Defective CKP sensor.
Defective ignitor.
Fouled spark plug.
Defective CKP sensor.
Defective ignitor.
Excessively rich air/fuel mixture.
Excessively high idling speed.
Incorrect gasoline.
Dirty air cleaner element.
Incorrect spark plug (Cold type).
Worn piston ring.
Worn piston.
Worn cylinder.
Excessive valve-stem to valve-guide
clearance.
Worn valve stem oil seal.
Incorrect spark plug (Hot type).
Overheated engine.
Loose spark plug.
Excessively lean air/fuel mixture.
Ignition System:
Correction / Reference Item
Replace.
Replace.
Clean or replace.
Clean and dry or replace.
Replace.
Replace.
Replace.
Replace.
Clean or replace.
Replace.
Replace.
Adjust carburetor.
Adjust carburetor.
Change.
Clean or replace.
Change to hot type spark plug.
Replace.
Replace.
Rebore or replace.
Replace.
Replace.
Change to cold type spark plug.
Tune-up.
Tighten.
Adjust carburetor.
1H-2
B649G11804005