C 20 3/4 Ton Pickup 2WD V8-305 5.0L VIN H 4-bbl (1982)
Crossfire occurs usually in the following manner:
when cylinder 5 fires, a voltage due to capacitive coupling between spark plug wires is
impressed across the electrodes of the spark plug in cylinder 7.
The strength of this capacitive coupling depends on the distance between parallel wires and the length which they are routed parallel.
When the ESC system is retarding the spark timing due to detonation, the voltage requirement increases, thus increasing the crossfire potential.
When crossfire occurs, a customer might complain of such things as:
^
Detonation
^
Poor or erratic performance
^
Loss of power.
The following figures show the recommended spark plug wire routing for complaint vehicles.
