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there are a few reasons for engines knocking......... - bad type of fuel

- higher gear ratio at slower speeds

if your engine knocks when you start it up then you have probably got a bad or dirty fuel in your car... change the filters or just get away with using it and change your petrol station if the engine knocking happens during driving then its because you are putting more gas on at lower speeds and higher gear ratios...you just need to lower your gear. say change from gear 3 to gear 2 and try increasing the gas gradually and slowly and the knocking should go away....

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Q: How do you help engine knocking?
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