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Poor Performance Or Black Smoke

Poor Performance Or Black Smoke


Possible Cause

   

Possible Remedy

Air in fuel system

   

Bleed fuel system, eliminate air leaks

Injection lines blocked/restricted

   

Drill to nominal I.D. or replace

Pump-to-engine timing incorrect

 

Readjust timing

Injection nozzle defective

 

Repair or replace

Governor misadjusted or defective

 

Readjust or repair

Fuel injection pump defective or cannot be adjusted

 

Remove pump and service

Engine air filter blocked

 

Replace air filter element

Injection sequence does not correspond to firing order

 

Install fuel injection lines in the correct order

Timing device defective

 

Repair or replace timing device

Low or uneven engine compression

 

Repair as necessary

 

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