What is Engine Knocking and How Can I Fix It?

engine repair

If you consistently notice a pinging or knocking sound when you’re driving down the road, chances are the problem can be traced to your engine.

What is engine knocking?
When the mixture of fuel and air inside your car’s cylinder isn’t functioning correctly, the fuel can’t burn evenly. The result: knocking noises in your engine.

Under normal conditions, your engine fuel burns evenly and in pockets. However, when the pockets burn unevenly due to various reasons, shock waves occur sporadically and at the wrong times. These shock waves produce the knocking sound you hear and can cause serious damage to your vehicle’s cylinder wall and engine piston.

How can I fix it?
Fuel can burn at uneven rates for a variety of reasons, all of which are relatively simple to repair and easy to pinpoint. If the problem persists and you continue to hear knocking, however, schedule an appointment for engine repair with your local auto mechanic at Christian Brothers Automotive. Let them take a professional look.

1. Check your fuel octane level. Low octane can cause engine knocking. Your owner’s manual should list the manufacturer recommended fuel and octane level that is best for your car’s make and model. The next time you visit the pump, try a different fuel with higher octane, too.
2. Use a detergent. Your car’s cylinder walls can collect carbon deposits, and while most fuels include some amount of detergent to prevent these buildups, adding additional detergent to keep the cylinders clean can’t hurt. Ask your local mechanic what detergent is best for your car’s engine.
3. Check your spark plugs. If your vehicle doesn’t have the correct spark plugs installed, engine knocking can occur. Look in your owner’s manual to see what your manufacturer recommends or ask your local technician at Christian Brothers Automotive.

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