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.
1990 Mitsubishi Precis Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Spark Plugs
SPARK PLUG TYPE
| Application | Nippondenso No. | |||
|---|---|---|---|---|
| 1.5L (VIN J) | (1) RN9YC4 | |||
| 1.5L (VIN X) | W20EPR-11 | |||
| 1.6L (VIN Y) | W20EPR-11 | |||
| 1.8L (VIN T) | W20EPR-11 | |||
| 2.0L (VIN R) | W20EPR | |||
| 2.0L (VIN U & V) | W20EPR-11 | |||
| 2.4L (VIN W) | P20PR-11 | |||
| 2.6L (VIN E) | W22EPR-S11 | |||
| 3.0L (VIN S) | ||||
| Montero & Pickup | W16EPR-11 | |||
| Sigma | P16PR-11 | |||
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SPARK PLUG SPECIFICATIONS
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) | |
|---|---|---|---|
| All Except 2.0L | |||
| (VINs R & U) | .039-.043 (1.0-1.1) | 15-21 (20-30) | |
| 2.0L (VINs R & U) | .028-.031 (.7-.8) | 15-21 (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.
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