Tune-Up - V6: Adjustments: Distributor

The 3.0L engine is equipped with Mitsubishi Electronic Ignition System (EIS). The 3.9L engine uses Chrysler Hall Effect Electronic Spark Advance (ESA) ignition system.

The only adjustments that can be made to either system are initial ignition timing (changing distributor position) and spark plug gap.

Fig 1: 3.0L Timing Mark

Courtesy of CHRYSLER MOTORS.

Fig 2: 3.9L Timing Mark

Courtesy of CHRYSLER MOTORS.