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SERVICING
INFORMATION
ELECTRICAL
Complaint Symptom and possible causes Remedy
No sparking or poor
1. Defective ignition coils or CKP sensor.
Replace.
sparking. 2. Defective spark plugs. Replace.
3. Defective sensor. Replace.
4. Defective ECM.
Replace.
5.
Defective tip over sensor. Replace.
6.
Open-circuited wiring connections. Check and repair.
Spark plug soon
1. Mixture too rich. Inspect FI system.
become fouled with
2. Idling speed set too high. Adjust fast idle or throttle
carbon. stop screw.
3.
Incorrect gasoline. Change.
4. Dirty element in air cleaner.
Clean or replace.
5. Too cold spark plugs. Replace with hot type plug.
Spark plug become
1.
Worn piston rings. Replace.
fouled too soon. 2. Worn piston or cylinders. Replace.
3.
Excessive clearance of valve stems in valve Replace.
guides.
4.
Worn stem oil seal. Replace.
Spark plug elec-
1. Too hot spark plugs.
Replace with cold type
trodes overheat or plugs.
burn.
2.
Loose spark plugs.
Retighten.
3.
Too lean mixture. Inspect FI system.
Generator does not
1.
Open or short lead wires, or loose lead Repair or replace or
charge. connections. retighten.
2. Shorted, grounded or open generator coils. Replace.
3. Shorted or punctured regulator/rectifier.
Replace.
Generator does
1. Lead wires tend to get shorted or open-circuited Repair or retighten.
charge, but charg- or loosely connected at terminals.
ing rate is below the 2. Grounded or open-circuited generator coils or Replace.
specification. generator.
3. Defective regulator/rectifier. Replace.
4.
Defective cell plates in the battery. Replace the battery.
Generator 1. Internal short-circuit in the battery. Replace the battery.
overcharges. 2.
Damaged or defective regulator/rectifier. Replace.
3.
Poorly grounded regulator/rectifier. Repair, replace, or
connect properly.
Unstable charging. 1. Lead wire insulation frayed due to vibration, Repair or replace.
resulting in intermittent shorting.
2. Internally shorted generator. Replace.
3.
Defective regulator/rectifier. Replace.
Starter button is not 1. Run down battery. Repair or replace.
effective. 2. Defective switch contacts. Replace.
3. Not seating properly brushes on commutator in Repair or replace.
starter motor.
4. Defective starter relay/starter interlock switch.
Replace.
5. Defective main fuse.
Replace.