Plugs were changed about 5k ago and the old ones were good colour.
Timing is good as well but I was wondering if this could be an anit-knock
sensor or something to do with the cam position sensor? Would this prevent
timing from being advanced etc?
This vehicle is equipped with a knock sensor. If it does not operate
properly and the computer does not discover this, it may overadvance the
You should be using 87 Octane fuel or better. Lower than that can cause
Anything that will increase combustion chamber temperatures or compression
(including carbon build-up) can cause spark knock.
Thanks for the response. We've been using 91 octane for the last couple
of years now and that cured the problem then but it's quite noticeable now.
There are no codes set in the computer (just read it) and is starts fine.
Any way to check the knock sensor?
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