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.

1990 Suzuki Swift GLXFACTORY OEM SERVICE PROCEDURE

Ignition Timing

IGNITION TIMING (Degrees BTDC @ RPM)

Application

Manual Transmission

Automatic Transmission

DOHC

⁽¹⁾ 5-7 @ 800-900

SOHC

⁽²⁾ 5-7 @ 600-700

⁽²⁾ 5-7 @ 700-800

⁽¹⁾	With jumper wire installed between Black wire and Violet/Green wire of test connector, located near ignition coil.

⁽²⁾	With vacuum hose disconnected from distributor. With hose connected, timing should be 11-13 degrees BTDC.

Fig 1: Typical Ignition Timing Mark Location

Courtesy of SUZUKI OF AMERICA CORP.

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.