2.0L & 2.5L

Warm the engine.
To check the ignition timing, connect a timing light to No. 1 cylinder spark plug cord, and illuminate the timing mark with the timing light. See Fig 2 .
Start the engine at idle speed and check the ignition timing. If the timing is not correct, see IGNITION TIMING SPECIFICATIONS table, check the ignition control system. See appropriate BASIC DIAGNOSTIC PROCEDURES article.

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

Application

Auto. Trans.

Man. Trans.

2.0L & 2.5L

15 @ 700

10 @ 650

⁽¹⁾	To improve stability, timing is controlled while engine is idling. Timing range is plus or minus 8 degrees.

Fig 1: Identifying 4-Cylinder Engine Configuration & Firing Order

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Identifying Timing Marks (2.0L & 2.5L)

Courtesy of SUBARU OF AMERICA, INC.