Subaru Forester 1998-05

Adjustment

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The ignition timing is controlled by the engine control computer and is not adjustable. To check the ignition timing proceed as follows:

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Warm up the engine, then turn the ignitionOFF
  4.  
  5. Connect a timing light to the No. 1 spark plug wire according to the manufactures directions.
  6.  
  7. Start the engine. With the vehicle at idle check the timing.
  8.  
  9. The timing should be 7-23 degrees Before Top Dead Center (BTDC) at 700 RPM on vehicles with an automatic transmission and 2-18 degrees at 650 RPM on models with a manual transmission.
  10.  
  11. If the timing is not correct, there could be a problem in the ignition control system.
  12.  

The ignition timing is controlled by the Powertrain Control Module (PCM). No adjustment is necessary or possible.

 
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