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

Restricted fuel filter/line Replace filter/repair restricted line

Low fuel pressure Test fuel pressure. Fuel System Diagnosis

Plugged fuel injectors Perform injector service (cleaning).