Fuel Injection Pump
Problem Possible Cause Correction
Engine has no power Defective fuel supply Check filter cartridge and pipes
Incorrect pump timing Correct timing
Incorrect spray, or injector pressure
out
of adjustment
Check, clean and adjust injectors
Air intake restriction Check hoses and air cleaner
Insufficient automatic advance Have pump repaired
Discharge rates too low Have pump repaired
Idling too fast Idling stop out of adjustment Adjust stop and fast idling control
Throttle cable out of adjustment Adjust throttle cable
Governor out of adjustment Have pump repaired
Maximum speed too high Max. speed stop out of adjustment Have pump repaired
Jammed discharged valve Have pump repaired
Blocked pump governor Have pump repaired
Engine will not accelerate Defective fuel supply Check filter cartridge and pipes
Seized pump plunger Have pump repaired
Broken pump plunger spring Have pump repaired
Hard discharge valve Have pump repaired
Seized feed pump Drain water from tank, pipes and
f
ilter – have pump repaired
Accelerator linkage defective Repair linkage
Engine emits smoke Air getting into feed system Check gaskets and pipes
Defective fuel supply Check filter cartridge
Incorrect pump timing Correct timing
Incorrect spray, or injectors out of
adjus
tment
Check, clean and adjust injectors
Insufficient automatic advance Have pump repaired
Discharge rates too high Have pump repaired
Air intake restriction Check hoses and air cleaner
Engine Page 3 - 20
Rev
. B
Groundsmaster 455-D
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