Ignition Timing: Notes

NOTE: Verify that increasing engine speed advances ignition timing.

IGNITION TIMING (Degrees BTDC @ RPM)

Application

Man. Trans.

Auto. Trans.

DOHC

⁽¹⁾ 5-7 @ 800-900

SOHC

⁽¹⁾ 4-6 @ 750

⁽¹⁾ 4-6 @ 850

⁽¹⁾	With jumper wire installed between "D" and "E" terminals of monitor coupler, located near ignition coil. See Fig 2 .

Fig 1: Locating Ignition Timing Mark

Courtesy of SUZUKI OF AMERICA CORP.

Ensure transmission is in Neutral or Park. Set parking brake. Inspect crankshaft pulley timing mark and timing mark indicator on timing belt cover. See Fig 1 . Clean marks as required. Start engine, and warm it to normal operating temperature. Turn all accessories off. Attach timing light to No. 1 spark plug wire. Ensure idle speed is correct. See IDLE SPEED SPECIFICATIONS table under IDLE SPEED & MIXTURE.
CAUTION: Driving with jumper wire installed in monitor coupler will damage catalytic converter.
Connect terminals "D" (ground) and "E" (test switch) of monitor coupler. See Fig 2 . Aim timing light at crankshaft pulley and timing cover timing marks. If ignition timing is not within specification, loosen distributor hold-down bolt and rotate distributor to obtain correct ignition timing. See IGNITION TIMING table. Tighten distributor hold-down bolt, and recheck ignition timing.

Fig 2: Identifying Monitor Coupler Terminals

Courtesy of SUZUKI OF AMERICA CORP.