P0307 Cylinder 6 Misfire Detected

Cylinder 6 Misfire Detected: Causes, Symptoms, and Solutions

Have you ever experienced a rough idle or a decrease in engine power? If yes, then your car might be experiencing a cylinder 6 misfire. This issue can be caused by a variety of factors and can result in severe engine damage if left unaddressed. In this article, we will discuss what cylinder 6 misfire is, its symptoms, and solutions to help you troubleshoot and fix the problem.

What is Cylinder 6 Misfire?

Cylinder 6 misfire is a common engine problem that occurs when the fuel inside the cylinder fails to ignite properly. When this happens, the combustion process is disrupted, causing a misfire. Cylinder 6 is one of the six cylinders in a typical V6 engine, and a misfire in this cylinder can cause significant issues with your car’s performance.

Causes of Cylinder 6 Misfire

There are several reasons why cylinder 6 misfire can happen. The most common causes include:

  1. Faulty Spark Plug: A spark plug ignites the fuel in the cylinder, and when it is faulty, it will not provide the necessary spark, causing a misfire.
  2. Ignition Coil Failure: The ignition coil is responsible for generating the electrical current needed to ignite the fuel in the cylinder. When it fails, the spark plug will not deliver the necessary spark, causing a misfire.
  3. Fuel Injector Malfunction: The fuel injector is responsible for injecting fuel into the cylinder, and when it malfunctions, it can cause a misfire.
  4. Low Fuel Pressure: Low fuel pressure can result in a lean air-fuel mixture, which can cause misfires.
  5. Vacuum Leak: A vacuum leak can cause a lean air-fuel mixture, which can result in misfires.

Symptoms of Cylinder 6 Misfire

The symptoms of cylinder 6 misfire can vary depending on the severity of the problem. The most common symptoms include:

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  1. Rough Idle: When the engine is idling, you may notice a rough or uneven idle. This is because the misfire causes the engine to vibrate abnormally.
  2. Loss of Power: If you experience a loss of power while driving, it could be due to cylinder 6 misfire. The misfire causes an imbalance in the engine, resulting in a decrease in power.
  3. Engine Light: When the engine light comes on, it is an indication that there is a problem with the engine. In the case of cylinder 6 misfire, the engine light will flash.

Solutions to Cylinder 6 Misfire

To fix cylinder 6 misfire, you need to diagnose the problem and then replace the faulty components. Here are some solutions to help you fix the problem:

  1. Replace Faulty Spark Plugs: If the spark plug is the problem, replace it with a new one.
  2. Replace the Ignition Coil: If the ignition coil is faulty, replace it with a new one.
  3. Fuel Injector Cleaning: Clean the fuel injector to improve its performance.
  4. Increase Fuel Pressure: If fuel pressure is low, increase it to improve the air-fuel mixture.
  5. Fix Vacuum Leak: If there is a vacuum leak, fix it to improve the air-fuel mixture.


Cylinder 6 misfire can cause serious damage to your car’s engine if left unaddressed. It is crucial to diagnose and fix the problem as soon as possible to avoid further damage to your car. The most common causes of cylinder 6 misfire include a faulty spark plug, ignition coil failure, fuel injector malfunction, low fuel pressure, and vacuum leak. The symptoms of cylinder 6 misfire include rough idle, loss of power, and engine light. To fix the problem, you need to diagnose the issue and replace the faulty components.


  1. Is cylinder 6 the only cylinder that can misfire?
    No, any cylinder can misfire, but cylinder 6 is one of the most common cylinders to experience misfire.
  2. How long can I drive with cylinder 6 misfire?
    It is not advisable to drive with cylinder 6 misfire as it can cause severe engine damage. It is best to diagnose and fix the problem as soon as possible.
  3. Can I fix cylinder 6 misfire myself?
    Yes, you can fix cylinder 6 misfire yourself if you have the necessary knowledge and tools. However, it is advisable to leave it to a professional mechanic if you are not confident.
  4. What happens if I ignore cylinder 6 misfire?
    Ignoring cylinder 6 misfire can cause severe engine damage and lead to costly repairs.
  5. How much does it cost to fix cylinder 6 misfire?
    The cost to fix cylinder 6 misfire depends on the cause of the problem. It can range from a few hundred to a few thousand dollars.