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.
1989 Geo Spectrum 2D Hatchback, StandardFACTORY OEM SERVICE PROCEDURE
Spark Plugs
SPARK PLUG TYPE
| Application | Nippondenso | NGK | ||
|---|---|---|---|---|
| Metro | 1W16EPR-U11 | (1) R43XLS | ||
| Prizm | Q16R-U | BPR5EY | ||
| Spectrum | W20EXR-U11 | BPR6ES-11 | ||
| Tracker | 1W16EPR-U11 | (1) R43XLS | ||
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SPARK PLUG SPECIFICATIONS
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|---|---|
| Metro | .040 (1.05) | 15-22 (20-30) |
| Prizm | .031 (.8) | 14-22 (20-29) |
| Spectrum | .040 (1.1) | 18.6 (13.7) |
| Tracker | .040 (1.05) | 15-22 (20-30) |
Factory Service Tools
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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.