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 MANUALSSUBARU1990XT-6 4WD L6-2.7L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION TIMINGTESTING AND INSPECTION
1990 Subaru XT-6 4WD L6-2.7L SOHC
Ignition Timing: Testing and Inspection
1990 Subaru XT-6 4WD L6-2.7L SOHCSECTION Testing and Inspection
Before checking and adjusting ignition timing, it is necessary to confirm that the throttle sensor idle switch is "ON". Refer to ADJUSTMENT PROCEDURES.
Timing Marks:
1. Warm up engine.
2. Confirm that throttle sensor idle switch is "ON."
3. Connect Test Mode connector (green connector).
4. Hook up timing light, start engine, set idle speed to specification and check timing.
5. If adjustment is needed, loosen 6mm distributor plate mounting bolts.
6. Turn distributor clockwise to advance timing and counterclockwise to retard timing.
7. When adjustment is complete, tighten bolts and recheck timing.
8. Turn off engine and disconnect Test Mode connector.
Ignition Timing (BTDC):
Manual Transmission: 20° /700 rpm
Automatic Transmission: 20° /800 rpm
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.