CSC SG250 - Fuel System Troubleshooting

SG250 Owner’s and Service Manual
www.CSCMotorcycles.com
87
Fuel System Troubleshooting
Item
Symptom
Cause
Vehicle Effect
Maintenance Action
Fuel tank
Rusty tank body
Water intrusion
Fuel leakage
Repair or replace
the tank
Fuel supply impeded
Fuel cap vent
clogged
Starting failure, engine
stalls
Clean air vent
Deformed tank
Impact
Poor appearance
Repair or replace
tank
Fuel hoses
Fuel supply impeded
Fuel
Starting difficulty,
insufficient power,
unstable idle speed
Clean filter
Fuel supply impeded
Fuel hose kinked
Starting difficulty,
insufficient power,
unstable idle speed
Unkink fuel hose
Fuel leaking
Fuel hose leaking
Leaking fuel, insufficient
power, unstable idle
speed
Replace fuel hose,
fuel filter, or fuel
petcock
Fuel petcock
Fuel leaking
Fuel petcock worn
Leaking fuel, insufficient
power, unstable idle
speed
Replace fuel
petcock
Fuel filter
Fuel leaking
Cracked fuel filter
Leaking fuel, insufficient
power, unstable idle
speed
Replace fuel filter
Loss of power
Fuel filter clogged
Difficult starting, loss of
power
Replace fuel filter
Fuel tank
Fuel tank rattling
Loose or missing
bolt, degraded or
missing fuel tank
mount
Fuel tank rattling
Replace fuel tank
mounting donut,
tighten fuel tank
mounting bolt
Fuel gage
Fuel gage inoperable
Short or open
circuit, defective
fuel gage
Incorrect fuel gage
reading
Check wiring,
replace fuel sending
unit, replace fuel
gage