red side

Low Power

Low Power

Possible Cause


Possible Remedy

Tank empty or tank vent blocked


Fill tank/bleed system, check tank vent

Fuel filter blocked


Replace fuel filter

Injection lines blocked/restricted


Drill to nominal I.D. or replace

Governor misadjusted or defective


Readjust or repair

Fuel injection pump defective or cannot be adjusted


Remove pump and service

Fuel-suppy lines blocked-restricted


Test all fuel supply lines - flush or replace

Loose connections, injection lines leak or broken


Tighten the connection, eliminate the leak

Pump-to-engine timing incorrect


Readjust timing

Injection nozzle defective


Repair or replace

Engine air filter blocked


Replace air filter element

Injection sequence does not correspond to firing order


Install fuel injection lines in the correct order

Maximum speed misadjusted


Readjust maximum speed screw

Overflow valve defective or blocked


Clean the orifice or replace fitting

Timing device defective


Repair or replace timing device

Low or uneven engine compression


Repair as necessary


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