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Engine knock, also known as "detonation," is typically caused by fuel burning unevenly in your engine's cylinders. This can be a result of several issues, including:
1. Low-quality fuel: If the fuel's octane rating isn't high enough for your vehicle, it may ignite prematurely.
2. Incorrect spark plugs: If the plugs are wrong for your vehicle, they can cause the fuel to ignite too early.
3. Overheating: If your engine is running hot due to a cooling system issue, it can cause the fuel to ignite too soon.
4. Incorrect ignition timing: If your ignition system is mistimed, it can throw off the precise sequence of fuel combustion.
5. High compression ratios: If the air-fuel mixture in the cylinders is too compressed, it can ignite prematurely.
6. Air/fuel mixture is lean: There isn't enough fuel compared to the air in the mixture, which makes the fuel harder to ignite and can cause detonation.
7. Carbon deposits in the combustion chamber: Over time, carbon deposits can build up in the combustion chamber and increase the compression of the air-fuel mixture, leading to knock.
8. Faulty knock sensor: If the knock sensor is not working properly, it may not be able to accurately detect or adjust for engine knock.
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