Start and warm engine to normal operating temperature. Ensure idle speed is within specification. See IGNITION TIMING SPECIFICATIONS table.
Turn engine and all accessories off. Attach timing light to No. 1 spark plug wire. Connect fused jumper wire between terminals No. 1 and 3 (Blue/Black and Orange/Yellow wire) of ALDL connector, located behind right kick panel. See Fig 1 .

Fig 1: Locating ALDL Connector
Courtesy of GENERAL MOTORS CORP.

Start engine and check timing mark alignment on crankshaft pulley with timing marks on timing belt cover. Ignition timing must be within specification. See IGNITION TIMING SPECIFICATIONS table.

IGNITION TIMING SPECIFICATIONS (Degrees BTDC@RPM) ⁽¹⁾

Application

Man. Trans.

Auto. Trans.

Storm & Storm GSi

⁽²⁾ 10 @ 700

⁽¹⁾	If specification differs from emission label, use specification listed on emission label.

⁽²⁾	Specification listed with jumper wire installed between ALDL connector terminals with Blue/Black and Orange/Yellow wires connector located behind right kick panel).

If ignition timing is not within specification, loosen distributor hold-down bolt and rotate distributor to obtain correct ignition timing. Tighten distributor hold-down bolt to 14 ft. lbs. (19 N.m). Recheck ignition timing.
Turn engine off. Remove jumper wire from ALDL connector. Remove timing light.

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.

Safety Warning

Ignition Timing

Use the Manual With the Right Hardware

When to See a Mechanic

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