Misses Under Load

Definition: Steady pulsation or jerking that follows engine speed, usually more pronounced as engine load increases. The exhaust has a steady spitting sound at idle or low speed.

POSSIBLE CAUSE ACTION

Contaminated fuel Drain fuel tank and add clean fuel. Refer to MAINTENANCE PROCEDURES/FUEL TANK DRAINING.


Restricted fuel filter/line Replace filter/repair restricted line.


Low fuel pressure Test fuel pressure


Fuel Metering Plugged fuel injectors.
Perform injector service (cleaning).