Why is My Used Car Exhaust Backfiring?

1 min read

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If you’re hearing an annoying sound while revving up the engine of your car, it’s most likely a backfire. This malfunction is often associated with a blue black smoke. If you want to sell car in Dubai, it’s important to know how to maintain it for better resale value. So, take out your notepads and watch out for these reasons that might be giving your car a “gassy stomach”!

  1. Too much fuel

If too much fuel is supplied to the engine than it needs to burn efficiently, it can cause a backfire. When there is a lot of extra fuel that can cause an explosion, it is known as abundant air-to-fuel mixture. If the exhaust valve is open on the cylinder, the extra air can cause the fuel to burn explosively and you will hear the noise of a backfire.

  1. Bad timing

Incorrect timing can also cause a backfire. It means that the fuel compression exhaust in the upper head cylinder is not aligned with the cylinder block (at the bottom block). As a result, the ignition chamber will start late in the combustion chamber and burn the fuel as the exhaust valve pops open.

  1. Broken distributor cap

A distributor cap and a wire set are used to provide electrical energy to the spark plugs. The spark plug then ignites the fuel in the cylinder. If the distributor cap is broken, moisture may seep inside and cause a spark that spreads from one set of wiring to another. A backfire may be caused if the wrong cylinder fires up when the exhaust valve opens. For regular preventative maintenance of your car, the distributor cap must be replaced during every tuning session.

  1. Malfunctioning air gulp valve

Cars nowadays have an air injection system that feeds the exhaust system when the system seems to be under load. It is required for an efficient emission system as it burns excess fuel. An air gulp valve can be found in the air injection system. If the air valve is not functioning properly, it will let out air into the combustion system which can spark a backfire due to the ignition of the unburned fuel.

If you experience any of the backfiring symptoms, it could be because of the reasons mentioned above. It is a sign that your car is not working properly and needs prompt attention. To save yourself from the cost of repairs it is importance to think ahead and ensure regular and preventative maintenance of your car.

If you are looking to sell car in Dubai, ensure that your ride is well-maintained. If you are looking for a new, loving home for your car as well as a transparent selling experience with zero hassle, CarSwitch.com is the place to go!

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