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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 759 (Engine Mechanical (Service Information)) >> Engine Tune-Up >> Ignition Timing Inspection

Ignition Timing Inspection

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Ignition timing is not adjustable.
  • Ignition timing verification requires WDS or equivalent.
  1. Verify that the ignition timing (WDS: SPARKADV PID) is within the specification using WDS or equivalent.
    1. Ignition Timing Approx. BTDC 8° 
  2. Verify that ignition timing advances when the engine speed increases gradually.
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