Suzuki GSX-R750 User Manual

Ignition System: 1H-4
Diagnostic Information and Procedures
Ignition System Symptom Diagnosis
B838H21804001
Condition Possible cause Correction / Reference Item
Spark plug not sparking Damaged spark plug. Replace.
Fouled spark plugs. Clean or replace.
Wet spark plugs. Clean and dry or replace.
Defective ignition coil/plug caps. Replace.
Defective CKP sensor. Replace.
Defective ECM. Replace.
Open-circuited wiring connections. Repair or replace.
Engine stalls easily (No
spark)
Fouled spark plugs. Clean or replace.
Defective CKP sensor. Replace.
Defective ECM. Replace.
Spark plug is wet or
quickly becomes fouled
with carbon
Excessively rich air/fuel mixture. Inspect FI system.
Excessively high idling speed. Inspect FI system.
Incorrect gasoline. Change.
Dirty air cleaner element. Clean or replace.
Incorrect spark plug (Cold type). Change to hot type spark plug.
Spark plug quickly
becomes fouled with oil
or carbon
Worn piston rings. Replace.
Worn pistons. Replace.
Worn cylinders. Replace.
Excessive valve-stem to valve-guide
clearance.
Replace.
Worn valve stem oil seals. Replace.
Spark plug electrodes
overheat or burn
Incorrect spark plug (Hot type). Change to cold type spark plug.
Overheated engine. Tune-up.
Loose spark plugs. Tighten.
Excessively lean air/fuel mixture. Inspect FI system.

Suzuki GSX-R750 Specifications

General

Engine Type	4-stroke, 4-cylinder, liquid-cooled, DOHC
Displacement	750cc
Compression Ratio	12.5:1
Fuel System	Fuel injection
Front Suspension	Inverted telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Overall Width	710 mm (28.0 in)
Ground Clearance	130 mm (5.1 in)
Seat Height	810 mm (31.9 in)
Curb Weight	190 kg (419 lbs)
Ignition	Electronic ignition (transistorized)
Starter	Electric
Final Drive	Chain
Bore x Stroke	70.0 mm x 48.7 mm
Transmission	6-speed, constant mesh
Rear Brakes	Disc
Front Tires	120/70ZR17M/C (58W)
Rear Tires	180/55ZR17M/C (73W)
Fuel Tank Capacity	17.0 L (4.5 US gallons)
Overall Length	2, 030 mm (79.9 in)
Wheelbase	1390 mm (54.7 in)
Front Brakes	Dual hydraulic disc