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Home >> Jeep Truck >> 1991 >> Wrangler L6-242 4.0L VIN S MFI >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Ignition Timing >> Specifications

Ignition Timing: Specifications

Ignition timing is electronically controlled by the Powertrain Control Module (PCM) and is not adjustable.

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