Suzuki GW250 User Manual

SERVICING INFORMATION 10-3
TROUBLESHOOTING
FI SYSTEM MALFUNCTION CODE AND DEFECTIVE CONDITION
(4-27 to -29)
ENGINE
Complaint Symptom and possible causes Remedy
Engine will not start
or is hard to start
Compression too low
1. Valve clearance out of adjustment
2. Worn valve guides or poor seating of valves
3. Mistiming valves
4. Excessively worn piston rings
5. Worn-down cylinder bores
6. Too slowly starter motor cranks
7. Poor seating of spark plugs
Plug not sparking
1. Fouled spark plugs
2. Wet spark plugs
3. Defective ignition coils
4. Defective CKP sensor
5. Defective ECM
6. Open-circuited wiring connections
7. Open or short in high-tension cords
No fuel reaching the intake manifold
1. Clogged fuel filter or fuel hose
2. Defective fuel pump
3. Defective fuel pressure regulator
4. Defective fuel injector
5. Defective fuel pump relay
6. Defective ECM
7. Open-circuited wiring connections
Incorrect fuel/air mixture
1. TP sensor out of adjustment
2. Defective fuel pump
3. Defective fuel pressure regulator
4. Defective TP sensor
5. Defective CKP sensor
6. Defective IAP sensor
7. Defective ECM
8. Defective ECT sensor
9. Defective IAT sensor
10. Clogged ISC valve air passage way
Adjust.
Repair or replace.
Adjust.
Replace.
Replace.
See electrical section.
Retighten.
Clean.
Clean and dry.
Replace.
Replace.
Replace.
Repair or replace.
Replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Check and repair.
Adjust.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.

Suzuki GW250 Specifications

General

Engine Type	4-stroke, 2-cylinder, liquid-cooled, SOHC
Displacement	248 cc
Bore x Stroke	53.5 mm x 55.2 mm
Compression Ratio	11.5:1
Fuel System	Fuel injection
Ignition	Electronic ignition (Transistorized)
Starter	Electric
Transmission	6-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Swingarm type, coil spring, oil damped
Front Tire	110/80-17M/C 57H, tubeless
Rear Tire	140/70-17M/C 66H, tubeless
Curb Mass	183 kg (403 lbs)
Front Brakes	Single disc
Rear Brakes	Single disc
Fuel Tank Capacity	13.3 liters
Overall Width	760 mm
Overall Height	1, 075 mm
Wheelbase	1, 430 mm
Ground Clearance	165 mm (6.5 in)
Seat Height	780 mm (30.7 in)
Overall Length	2, 145mm (84.4 inches)