ignition timing and knock sensor

Asked by Bob Oct 15, 2020 at 09:14 AM about the 2012 Ford Focus SE

Question type: Maintenance & Repair

If I use 91 octane gas in my Focus, will the knock sensor automatically advance
the spark if no knock is detected under lo=ad or at high speed?

2 Answers
155,275

james answered 3 years ago

Yes. The knock sensor listens for spark knock and retards the ignition timing only if it hears it. Hope that helps! Jim

Mark helpful
157,485

Bob answered 3 years ago

Why on earth would you waste money on 91 octane for a Focus?

Mark helpful

Your Answer:

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