Ignition Timing

IGNITION TIMING (Degrees BTDC @ RPM)

Application

Man. Trans.

Auto. Trans.

Metro w/o ESA

w/Vacuum

6@750

6@850

w/o Vacuum

12@750

12@850

Metro w/ESA

⁽¹⁾ 5@700

Prizm

⁽¹⁾ 6@650

6@650

Spectrum

3@650

3@900

Tracker

8@800

⁽¹⁾	With monitor coupler jumper wire removed, ignition timing should be 14 degrees BTDC.

Fig 1: Metro & Tracker Ignition Timing Mark Location

Courtesy of GENERAL MOTORS CORP.

Fig 2: Prizm Ignition Timing Mark Location

Courtesy of GENERAL MOTORS CORP.

Fig 3: Spectrum Ignition Timing Mark Location

Courtesy of GENERAL MOTORS CORP.