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Rough Idle When Engine Is Warm

Rough Idle When Engine Is Warm

Possible Cause


Possible Remedy

Air in fuel system


Bleed fuel system, eliminate air leaks

Injection sequence does not corespond to firing order


Install fuel injection lines in the correct order

Delivery valve leaking


Replace delivery valve (max. of 1 on 4 cyl., 2 on 6 cyl.)

Low or uneven engine compression


Repair as neccessary

Fuel injection pump defective or cannot be adjusted


Remove pump and service


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