Hesitation, Sag, Stumble

DEFINITION
Momentary lack of response as the accelerator is pushed down. Can occur at all car speeds. Usually most severe when trying to drive away from a stop. May cause the engine to stall, if severe enough.

CHECK
- Ignition wires for cracks, burned spots or burned ends, hardening, correct firing order, and proper resistance (no more than 30K Ohms per wire).

- Spark plugs for being fouled.

- Ignition system ground.