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Ignition Timing

BASE IGNITION TIMING

Application Specification
1.6L (1) (2)(3) 10° BTDC @ Idle
2.0L (1) (2)(3) 8° BTDC @ Idle
(1) Ground ALDL test terminal.
(2) Align timing marks to obtain specified degrees.
(3) Idle speed as specified on emission decal.
NOTE: A magnetic pick-up type timing light may be used on 1.6L engine equipped vehicles.
Fig 1: Ignition Timing Mark Location
G121768Courtesy of GENERAL MOTORS CORP.