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 MANUALSSUBARU2002LEGACY L SEDAN AWD F4-2.5L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION TIMINGTESTING AND INSPECTION
2002 Subaru Legacy L Sedan AWD F4-2.5L SOHC
Ignition Timing: Testing and Inspection
2002 Subaru Legacy L Sedan AWD F4-2.5L SOHCSECTION Testing and Inspection
INSPECTION
CAUTION: After warming-up, engine becomes very hot. Be careful not to burn yourself during measurement.
1) Warm-up the engine.
2) To check the ignition timing, connect a timing light to #1 cylinder spark plug cord, and illuminate the timing mark with the timing light.
3) Start the engine at idle speed and check the ignition timing.
Ignition timing [BTDC/rpm]:
MT vehicle: 10° ± 8°/650
AT vehicle: 15° ± 8°/700
If the timing is not correct, check the ignition control system. Refer to Engine Control System. Refer to Powertrain Management; Computers and Control Systems.
CAUTION: After warming-up, engine becomes very hot. Be careful not to burn yourself during measurement.
1) Warm-up the engine.
2) To check the ignition timing, connect a timing light to #1 cylinder spark plug cord, and illuminate the timing mark with the timing light.
3) Start the engine at idle speed and check the ignition timing.
Ignition timing [BTDC/rpm]:
MT vehicle: 10° ± 8°/650
AT vehicle: 15° ± 8°/700
If the timing is not correct, check the ignition control system. Refer to Engine Control System. Refer to Powertrain Management; Computers and Control Systems.
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.