Ignition Timing: Inspection

WARNING: This page is about a different car, the 2006 Subaru Outback and 2006 Subaru Legacy. 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 at measurement.

Before checking the ignition timing, check the following item:
1. Check the air cleaner element is free from clogging, spark plugs are in good condition, and hoses are connected properly.
2. Check the malfunction indicator light does not illuminate.
Warm-up the engine.
Stop the engine, and turn the ignition switch to OFF.
Insert the cartridge to the Subaru Select Monitor.
Connect the Subaru Select Monitor to the data link connector.

Fig 1: Locating Data Link Connector
Courtesy of SUBARU OF AMERICA, INC.
Turn the ignition switch to ON and Subaru Select Monitor to ON.
Select {Each System Check} in Main Menu.
Select {Engine Control System} in Selection Menu.
Select {Current Data Display & Save} in Engine Control System Diagnosis.
Select {Data Display} in Data Display Menu.
Start the engine and check the ignition timing at idle speed.
Ignition timing [BTDC/RPM]:

10°±8°/650 (MT Model)

15°±8°/700 (AT model)

If the timing is not correct, check the ignition control system. Refer to "Engine Control System". < Ref. to BASIC DIAGNOSTIC PROCEDURE . >