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.
1991 Subaru XT AutomaticFACTORY OEM SERVICE PROCEDURE
4-Cylinder Ignition Timing: Legacy
- Ensure engine is at normal operating temperature and idle speed is correct. Place transaxle in Neutral (M/T), or Park (A/T). Attach timing light to No. 1 spark plug wire.
- Check timing mark located on crankshaft pulley. If timing is not as specified in 4-CYLINDER IGNITION TIMING table, check self-diagnostic system for trouble code(s) and repair as necessary. See G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
4-CYLINDER IGNITION TIMING
| Application | Degrees BTDC @ RPM |
|---|---|
| 1.8L Non-Turbo | 20 @ 700 |
| 1.8L Turbo | 20 @ 800 |
| 2.2L M/T | 18-22 @ 700 |
| 2.2L A/T | 12-28 @ 700 |
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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