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Home >> Jeep >> 1985 >> Scrambler Base, 4.2 C, Standard, T4 >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Tune-Up - 4-CYL >> Adjustments >> Ignition Timing

Ignition Timing

Check and adjust ignition timing with engine at normal operating temperature, 3-wire connector to vacuum input switch disconnected, and distributor vacuum advance hose disconnected and plugged.

IGNITION TIMING SPECIFICATIONS (DEGREES BTDC @ RPM)

Application Man. Trans. Auto. Trans.
2.5L 12 @ 1600 12 @ 1600