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Home >> Pontiac >> 1982 >> 6000 L4-151 2.5L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Tune-up and Engine Performance Checks >> Ignition Timing >> Adjustments
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Ignition Timing: Adjustments

Set timing at slow idle and Before Top Dead Center, unless otherwise specified.

Disconnect and plug distributor vacuum hose at distributor.

1.8L (112) FI, 2.0L (122) OHC, 2.5L (151) FI, 3.8L (229), ground diagnostic test terminal under dash.

Others, carburetted, disconnect 4-wire connector at distributor.

Timing MUST be set to specifications on emission label if different from setting listed. If "Check Engine" light comes on during procedure, remove ECM fuse to clear.



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