Service Manual

Problem Possible Cause Correction
Engine will not start No preheating Check glow plugs and relay
No fuel supply Make sure tank is not empty
Check filter element and pipes
Check system bleeding
Defective solenoid valve Check electric stop solenoid
Seized pump plunger Have pump repaired
Discharge valve blocked in “stop”
position
Have pump repaired
Seized feed pump Drain water from tank, pipes and
f
ilter – repair pump
Irregular engine speed Defective fuel supply
Carbon fouled injectors
Unequal discharge rates
Faulty governor
Check filter cartridge and pipes
Chec
k, clean and adjust injectors
Have pump repaired
Have pump repaired
Noisy engine
E
ngine stalls at idling
Incorrect pump timing
Blocked automatic advance
Automatic advance to far advanced
Air getting into fuel system
Idling stop out of adjustment
Jammed discharge rate
Correct timing
Have pump repaired
Have pump repaired
Check gaskets and pipes
Adjust idling stop
Have pump repaired
Vibrating engine Unequal discharge rate
Ai
r in fuel system
Defective fuel injector
Jammed discharge valve
Have pump repaired
Chec
k fuel lines and clamps
Check injectors
Have pump repaired
Engine will not stop Key switch defective Replace key switch
Defective electric stop solenoid Check electric stop solenoid
Engine
Groundsmaster 455-D Page 3 - 21
Rev. B
Engine