Is It Bad If My Car Backfires??

The rapid burn that occurs while the exhaust valve is open causes a backfire.

Almost all backfire situations will have other symptoms attached to them such as a Check Engine Light illuminated.

A backfire is a sign that your car isn’t running efficiently and needs to be addressed in short order.

What causes an engine to backfire through the intake?

Other Causes

A leak in the air injection system can also cause the intake to backfire, since this affects the amount of air taken in. The intake system must be timed correctly so that it can feed fuel and air to the spark plugs at a proper rate. If this timing is off, it can be another cause for backfiring.

How do you stop a car from backfiring?

Although modern engine control systems alleviate most of it, there are things you can do to prevent your car from backfiring.

  • Change oxygen sensors.
  • Stop air leaks.
  • Renew that spark.
  • Check engine belts.
  • Keep a healthy exhaust.

How do I make my car backfire?


  1. Consider the reasons that cars backfire. While backfiring can be done manually with relative ease in old cars, it’s important you have an understanding of what backfiring is, and what causes it.
  2. Start your vehicle.
  3. Turn the engine off again, with your foot on the gas pedal.
  4. Wait a few seconds, then restart the car.

Photo in the article by “Wikimedia Commons”