Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1990SUNBIRD LE, 2D COUPE, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - SPECIFICATIONS - 4-CYLIGNITION TIMING
1990 Pontiac Sunbird LE, 2D Coupe, Standard
Ignition Timing
1990 Pontiac Sunbird LE, 2D Coupe, StandardSECTION Ignition Timing
NOTE:
For timing procedures, see the appropriate D - "Engine Type" ADJUSTMENTS article in this section.
IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Man. Trans. | Auto. Trans. | ||||
|---|---|---|---|---|---|---|
| 2.0L (VIN K) | 8 @ Idle | 8 @ Idle | ||||
| 2.0L (VIN M) | 8 @ Idle | (2) 8 @ Idle | ||||
| 2.2L (VIN G) | (1) | (1) | ||||
| 2.3L (VIN A & D) | (1) | (1) | ||||
| 2.5L (VIN R & U) | (1) | (1) | ||||
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.