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Jul 1, 2007 | 01:25 PM

#1

jack665

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Spark Knock

I have a 98 f-150, and have a increasing problem with spark knock. Ive changed plugs and wires and no help. I used to be able to fill up with 93 octane or use octane boost and it would be fine, but no more. It knocks under a load no matter what. Any help would be appreciated.

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Jul 1, 2007 | 02:03 PM

#2

Tom

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From: Isanti, MN

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Sounds like your knock sensor is out of whack...I'd scan the computer to see if it's throwing any codes.....

Last edited by LxMan1; Jul 1, 2007 at 06:08 PM.

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