red side

Rough idle when engine is warm

Rough Idle when Engine is Warm

Possible Cause


Possible Remedy

Improper fuel (gasoline) in tank


Drain tank, flush system, fill with proper fuel

Air in the fuel system


Bleed fuel system, eliminate air leaks

Pump rear support bracket loose


Replace as necessary

Injection nozzle defective


Replace or repair

Injection sequence does not correspond to firing order


Install fuel injection lines in the correct order

Low or uneven engine compression


Repair as necessary

Fuel injection pump defective or cannot be adjusted


Remove pump and service


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