IGNITION TIMING (Degrees BTDC@ RPM)

Application

Man. Trans.

Auto. Trans.

Samurai

⁽¹⁾ 7-9 @ 800

N/A

⁽¹⁾	Specification listed is with jumper wire installed between terminals "C" and "D" (Black/Green and Blue wires) of test connector, located near the battery. See Fig 2 .

Fig 1: Locating Ignition Timing Mark

Courtesy of SUZUKI OF AMERICA CORP.

Ensure transmission is in Neutral or Park position and parking brake is set. Inspect crankshaft pulley timing mark and timing mark indicator on timing belt cover. Clean marks as required. Start engine and warm to normal operating temperature. Turn engine off for 5 seconds. Restart and run engine at 2000 RPM for 5 minutes, then return to idle. Turn all accessories off. Attach timing light to No. 1 spark plug wire. Ensure idle speed is correct. See IDLE SPEED SPECIFICATIONS (TBI) table.
Remove protective cap from test connector located beside battery. See Fig 2 . Connect jumper wire between terminals "C" and "D" (between Black/Green and Blue wires of connector). Aim timing light at crankshaft pulley and timing cover timing marks. If ignition timing is not within specification, loosen distributor hold-down flange bolts and rotate distributor to obtain correct ignition timing. Tighten distributor hold-down flange bolts and recheck ignition timing. See IGNITION TIMING table.
Remove jumper wire from test connector. Ensure ignition timing advances with engine speed (RPM). If ignition timing does NOT increase, check TPS, test connector wiring circuit, engine start signal circuit and ECM.

CAUTION: Driving with jumper wire installed in test connector will damage catalytic converter.

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: Notes