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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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