2007 Subaru Outback spark knock

2007 SUBARU OUTBACK
16,000 MILES • 2.5L • 4 CYL • 4WD • AUTOMATIC
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RCCT53
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  • 1 POST
Other than using premium gas, what can be done to stop spark knock?
Jul 12, 2014 at 1:57 PM
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KHLOW2008
  • CERTIFIED EXPERT
  • 41,814 POSTS
If your vehicle is equipped with a knock sensor, knocking should not occur no matter what grade of gas you use, unless the the knock sensor is bad.

Modern engines are computer controlled meaning you cannot retard the ignition timing by adjustment.
Jul 17, 2014 at 7:25 AM