Ignition Timing

Ensure vehicle is at normal operating temperature, all accessories are off and transmission is in Park or Neutral. Ensure front wheels are in straight-ahead position and curb idle speed is set to specification. See IDLE SPEED & MIXTURE.
NOTE: DO NOT connect Hyundai's Multi-Use Tester (MUT) while adjusting timing on 3.0L engine, or incorrect basic ignition timing reading will result.
Ground ignition timing adjustment connector. See Fig 1 & Fig 2 . Check ignition basic timing. See IGNITION TIMING SPECIFICATIONS table. Disconnect ground wire on ignition timing adjustment connector. Check ignition actual timing. See IGNITION TIMING SPECIFICATIONS table.
On 3.0L engine, if timing is incorrect, loosen distributor hold-down nut and turn distributor until timing is correct. On 3.0L engine, ignition timing will be advanced if distributor is turned to right and retarded if turned to left. After adjustment, tighten hold-down nut. Ensure distributor does not move when tightening hold-down nut.
On 1.6L and 2.0L engines, if timing is incorrect, loosen Crank Angle Sensor (CAS) hold-down nut. Ignition timing will be advanced if CAS is turned clockwise and retarded if turned counterclockwise. After adjustment, tighten hold-down nut. Ensure CAS does not move when tightening hold-down nut.

IGNITION TIMING SPECIFICATIONS (Degrees BTDC @ RPM)

Application

⁽¹⁾ Basic

⁽²⁾ Actual

1.6L & 2.0L

3-7 @ 650-850

8 @ 650-850

3.0L ⁽³⁾

3-7 @ 600-800

15 @ 650-850

⁽¹⁾	With ignition timing adjustment connector grounded.

⁽²⁾	With ignition timing adjustment connector ungrounded.

⁽³⁾	DO NOT adjust basic timing with Hyundai's Mutli-Use Tester (MUT) connected.

Fig 1: Grounding Ignition Timing Adj. Connector (Typical Elantra)

Courtesy of HYUNDAI MOTOR CO.

Fig 2: Grounding Ignition Timing Adj. Connector (Typical Sonata)

Courtesy of HYUNDAI MOTOR CO.