Method With Timing Light

WARNING: This page is about a different variant/trim than selected.

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.
Remove the collector cover.
NOTE:
Follow these procedures for removal of the collector cover.
1. Lift up the rear side holding two positions (A).
2. Lift up the front side holding two positions (B) while moving it in the forward direction of the vehicle.
  
  Fig 1: Removing Collector Cover
  Courtesy of SUBARU OF AMERICA, INC.
Disconnect the ground cable from battery.
Remove the air intake duct. Refer to AIR INTAKE DUCT .
Disconnect the connector from mass air flow and intake air temperature sensor.
Remove the air cleaner case and element.
Connect the timing light to the power wire of #1 ignition coil.
Install the connectors of air cleaner case, element, and the mass air flow and intake air temperature sensor.
Connect the ground cable to battery.
Start the engine, turn the timing light to the crank pulley, and check the ignition timing through the chain cover gauge.
NOTE: If ignition timing is out of standard, check the ignition control system. Refer to "Engine Control System". Refer to BASIC DIAGNOSTIC PROCEDURE .

Ignition timing [BTDC/RPM]:

Standard

15°±8°/700

Fig 2: Checking Ignition Timing
Courtesy of SUBARU OF AMERICA, INC.
After inspection, install the related parts in the reverse order of removal.