Ignition Timing: Notes

Timing specifications for each engine are listed on the Vehicle Emissions Control Information label. Always follow the tune-up label procedures when adjusting timing. See SET IGNITION TIMING  for specific procedures to use when setting base engine timing. For firing order, see Figure .

The 4.5L engine incorporates a magnetic timing probe hole for use with special electronic timing equipment. Figure shows a typical magnetic probe hole. Consult manufacturer's instructions for use of this equipment.

Malfunction codes may be set during ignition timing. Enter diagnostics and clear trouble codes if this occurs.