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 Honda Civic Base, 2D HatchbackFACTORY OEM SERVICE PROCEDURE
Spark Plugs: Notes
SPARK PLUG TYPE
| Application | NGK | |
|---|---|---|
| Accord | ZFR5F-11 | |
| Civic & CRX | BCPR6EY-N11 | |
| Prelude | ||
| Carbureted | BCPR5EY-N11 | |
| Fuel Injected | ZFR5F-11 | |
SPARK PLUG SPECIFICATIONS
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|---|---|
| All Models | .039-.043 (1.0-1.1) | 13 (18) |
IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Setting | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Accord | 13-17 @ 700-800 | ||||||||
| Civic | |||||||||
| 1.5L | 16-20 @ 675-775 | ||||||||
| 1.6L | 16-20 @ 700-800 | ||||||||
| CRX | |||||||||
| Std. | 16-20 @ 675-775 | ||||||||
| Si | 16-20 @ 700-800 | ||||||||
| HF | 12-16 @ 550-650 | ||||||||
| Prelude | |||||||||
| Carbureted | |||||||||
| Automatic Transaxle | (1)(2) 13-17 @ 700-750 | ||||||||
| Manual Transaxle | (3) 18-22 @ 750-850 | ||||||||
| Fuel Injected | 13-17 @ 700-800 | ||||||||
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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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