Ignition Timing: Inspection

WARNING: This page is about a different car, the 2003 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: After warming-up, engine becomes very hot. Be careful not to burn yourself during measurement.

Warm-up the engine.
To check the ignition timing, connect a timing light to #1 cylinder spark plug cord, and illuminate the timing mark with timing light.
Start the engine at idle speed and check the ignition timing.
Ignition timing [BTDC/rpm]:
1. 10+/-8°/650 (MT vehicles)
2. 15+/-8°/700 (AT vehicles)
Fig 1: Checking Ignition Timing
Courtesy of SUBARU OF AMERICA, INC.

If the timing is not correct, check the ignition control system.

Refer to Engine Control System. Refer to IGNITION CONTROL SYSTEM , Basic Diagnostic Procedures.