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 MANUALSHYUNDAI1990EXCEL BASE, 2D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSIGNITION TIMINGIGNITION TIMING ADJUSTMENT
1990 Hyundai Excel Base, 2D Hatchback, Automatic
Ignition Timing Adjustment
1990 Hyundai Excel Base, 2D Hatchback, AutomaticSECTION Ignition Timing Adjustment
- Ensure vehicle is at normal operating temperature, all accessories are off and transmission is in Park or Neutral. Front wheels must be in straight-ahead position and curb idle speed is set to specification.
- Ground ignition timing adjustment connector Light Green/Red wire. See Fig 1 & Fig 2 . Check ignition basic timing. See the IGNITION TIMING table. Disconnect ground wire on ignition timing adjustment connector. Check ignition actual timing. Refer to the IGNITION TIMING table.
- If timing is incorrect, loosen distributor hold-down nut and turn distributor until timing is correct. On 1.5L and 2.4L engines, ignition timing will be advanced if distributor is turned to the left and retarded if turned to the right.
- On 3.0L engines, ignition timing will be advanced if distributor is turned to the right and retarded if turned to the left. After adjustment, tighten hold-down nut. Ensure distributor does not move when tightening hold-down nut.
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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.