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knock sensor


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Ok so connected my car up to my computer today and whent for a spin I noticed the knock sensor was retarding the engine by 6 degrees when putting my foot down is this normal and if so wot would cuse this??

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Old spark plugs, weak engine mounts, dodgy sensor. Before running down the more expensive route, try a tank of high octane fuel through the car and you'll see an improvement all round.

Even if the knock sensor is slightly lose it will rattle and "detect knock" quite a simple sensor really.

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