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Home >> Jeep >> 1983 >> Cherokee Laredo, 4.2 C, Automatic >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Tune-Up - V8 >> Adjustments >> Ignition Timing

Ignition Timing

NOTE: Engines are equipped with a receptacle for a magnetic probe timing light, located 9.5° ATDC. Do not use this location for timing with a conventional light.

Warm engine and allow to idle. Disconnect and plug distributor vacuum line, then check ignition timing. Adjust by turning distributor.

TIMING SPECIFICATIONS (DEGREES BTDC @ RPM)

Application Specification
High Alt. 16@600
All Others 10@600
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