red side

Low Power

Low Power

Possible Cause


Possible Remedy

Improper fuel (gasoline) in tank


Drain tank, flush system, fill with proper fuel

Tank empty or tank vent blocked


Fill tank/bleed system, check tank vent

Fuel filter blocked


Replace fuel filter

Injection lines blocked or restricted


Drill to nominal I.D. or replace

Fuel-supply lines blocked-resticted


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


Replace or repair

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 fitting interchanged with inlet fitting


Install fittings in their proper positions

Low or uneven engine compression


Repair as necessary

Fuel injection pump defective or cannot be adjusted


Remove pump and service


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