If you are struggling with a car that backfires, get in contact with us , and let us help you sort the problem out once and for all. That unburnt fuel can be caused by a variety of mechanical problems, and here are some of the most common reasons for a backfire: Running too rich If your engine is getting more fuel than it needs, a rich fuel to air ratio is the result.
Engine timing is incorrect Specifically, here we mean delayed timing, which causes the backfire. Visit your local Firestone Complete Auto Care , or schedule an appointment online for help troubleshooting engine backfires. Blog Categories Blog Home. Here are the basic steps your internal combustion engine follows to turn fuel and air into horsepower: Step 1: Intake The intake valve on your fuel cylinders opens, pulling a mixture of fuel and air into the engine. Step 2: Compression The intake valve shuts and a piston compresses the air-fuel mixture mentioned above.
Step 5: Exhaust and Propulsion The exhaust valve opens and closes, allowing smoke and residue from the combustion process to escape through the tailpipe. Poor Fuel-Air Ratio The right ratio of fuel and air is critical to proper engine combustion.
We'll look for the following troublemakers: Faulty Oxygen Sensors In newer vehicles, computerized sensors help ensure the air-fuel ratio is correct. Leaky Exhaust Systems Leaks in the exhaust system, sometimes called vacuum leaks, can sound more like a screech than a bang as excess air gets sucked in. Dirty Air Filters Even something as simple as a dirty air filter can potentially trigger a backfire.
Faulty Fuel Injectors Injectors that supply too little or too much fuel to the cylinder can also create a poor fuel-air ratio. Misfiring Spark Plugs Spark plugs that fire out of turn or not at all can also cause backfiring. Bad Timing In the four-steps of engine combustion, timing is everything.
Up Next. Avoiding your car's recommended maintenance schedule won't save you money in the long run. Learn how following your vehicle's schedule can help save your ride!
Is that an earthquake or just your car shaking? The primary reason that a car will backfire, is because your engine is running too rich. Basically this means that there is too much fuel in the engine, and not enough air. This causes there to be too much fuel, causing a small explosion, and backfire, or pop that you hear.
This of course is not the only reason for a vehicle to backfire, and there are a couple other reasons that could cause this. This leaves some fuel left over, and then that ignites off time, and causes the backfire. Did you know that there is a specific timing that an engine should be running at to make it run correctly?
If your engine is delayed in its timing it can cause the backfire that you are hearing. Basically this means that the explosions that happen in the cylinder are happening as the valve is opening, and not when they are completely open. This causes the explosion to be late, causing the backfire.
I would recommend going to a shop for this one, they will have the correct information needed to put your vehicle back into time, and to stop the backfire.
To find out more and manage your cookie preferences with us please view our cookies policy. Request Callback. UK and European vehicle breakdown recovery. Why do cars backfire? Sunday, 14 June , What causes a backfire?
Spark plugs in the wrong place. Bent valve. R ich air-fuel mixture. Ignition delay.
0コメント