Toro Groundsmaster 455-D Service Manual page 38

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