Workshop Manual

12–6 TROUBLESHOOTING
OK
OK
OK
OK
UNSTABLE LOW IDLING
Checkpoint Trouble Cause Remedy
Low idling system Low idling improperly adjusted Adjust the low idling
Low idling speed control device
Defective low idling speed
control device
Repair or replace the low idling
speed control device
Throttle control system
improperly adjusted
Adjust the throttle control
system
Fuel system leakage or blockage Repair or replace the fuel systemFuel system
Throttle control system
Air in the fuel system Bleed the air from the fuel system
Water particles in the fuel system Change the fuel
Fuel filter Clogged fuel filter element
Replace the fuel filter element or
the fuel filter cartridge
NG NG
NG NG
NG NG
NG NG
NG NG
NG NG
NG NG
Continued on the next page