ENGINE RUNS IRREGULARLY OR STALLS FREQUENTLY
Possible Cause
Low coolant temperature ............................................... If water temperature gauge is not in normal range.
Clogged fuel filter........................................................... Replace filter element and bleed system.
Water, dirt, or air in fuel system .................................... Drain, flush, and refill. Bleed system.
Dirty or faulty injector nozzles........................................ See your dealer.
BELOW NORMAL ENGINE TEMPERATURE
Possible Cause
Defective thermostat...................................................... Replace with new thermostat.
Defective temperature gauge ........................................ Have serviceman replace gauge if defective.
....................................................................................... Check water with thermometer.
Possible Cause
Engine overload............................................................. Reduce load or shift to lower gear.
Too high viscosity oil in crankcase................................. Drain and fill crankcase with oil of proper viscosity.
Intake air restriction ....................................................... Clean air cleaner.
Clogged fuel filter........................................................... Replace filter element and bleed system.
High altitude operation
Overheated engine ........................................................ See "Engine overheats" below.
Improper valve clearance .............................................. See "Engine valve tappet adjustment".
Dirty or faulty injector nozzles........................................ See your dealer.
Injection pump out of time ............................................. Check timing, See dealer for service.
Obstruction in fuel system ............................................. See "Fuel system".
46
Bright Forklift
BD3–7570
LACK OF ENGINE POWER
Troubleshooting
Possible Remedy
Possible Remedy
Possible Remedy
Engines loose horsepower with increased altitude. Use proper
type of fuel for high altitude.