How To Fix A Misfiring BMW Engine

When it comes to German luxury automobiles, BMW is considered to be at the peak of the brand’s segment; nonetheless, time and improper care can cause even the most well-designed and professionally manufactured vehicle to begin to malfunction. Due to normal engine wear and tear, BMWs frequently experience misfires in their engines. Here, we’ll examine BMW engine misfires in detail, outlining their causes and providing advice for avoiding them in the future.

The Circular Process of Misfiring


When the inlet valve is opened, the engine is able to receive a combination of fuel and air for combustion. The cylinder, the piston, and the crankshaft all need to cooperate with one another for this to be successful.


The inlet valve will now close, which will result in the formation of a strong seal. This will cause the piston to go back into the cylinder, resulting in the production of significant levels of pressure, which will in turn cause the air and fuel mixture to become more combustible.


Now is the time for the miracle to take place! The ignition coil takes in electricity with a low voltage and transforms it into energy with a high voltage, which it then sends to the spark plugs. The spark plugs will then perform their primary function, which is to provide the spark necessary to ignite the compressed fuel. The combustion process generates a great deal of heat energy, which forces the piston to fall back into the cylinder and discharges the gas into the exhaust system, where it turns the crankshaft and propels your BMW forward.

How To Fix A Misfiring BMW Engine

Step 1: Identifying

Be on the lookout for a check engine light that is flashing. When the onboard computer detects a problem with the way the engine is working, it will activate the “check engine” light that is located on the dashboard of your vehicle. However, there is only one thing that may cause the light to flash on and off, and that is a misfire.

  • The check engine light will glow as long as the engine is misfiring; however, if the misfire is corrected, the light may stop flashing.
  • Even if your vehicle’s check engine light is not blinking but you see other indicators of a misfire, it is possible that the engine is still not firing properly.

Step 2: Check the Coils and the Spark Plugs

Take off the spark plug and ignition coil from that cylinder, inspect them visually and then replace them if they appear to be damaged or unclean.

  • Changing the spark plug and ignition coil so that they are located in another cylinder is an ancient trick that is still used frequently by mechanics on automobile engines that have separate ignition coils.
  • After that, you should clear the codes and continue driving for a bit to determine whether the issue has shifted to another cylinder.
  • If it did, you would know that there is an issue with either the spark plugs or the ignition coil, and in that case, you would want to replace all of the spark plugs and the ignition coil on that cylinder.

Ultimate BMW Service

If you live in Smithtown, Competition BMW’s well-renowned car service center is only a short drive away. To ensure that your BMW continues to operate without any misfires and at its peak level of performance, it is essential that you schedule an appointment with Competition BMW of Smithtown Service as soon as possible. Our specialists are both friendly and highly efficient in their work.