Uneven engine performance, vibrations, jerks during acceleration, or noticeable “stalls” — these are the first signs that the car is misfiring. This means that one or more cylinders are not working correctly or not working at all. This problem should not be ignored: it affects the vehicle’s dynamics, fuel consumption, safety, and could even lead to a serious repair if diagnostic delays occur.

Autopark-Service in Lviv offers complete diagnostics and professional solutions for the causes of engine misfires. Below are the main factors that lead to this malfunction and ways to quickly resolve it.

Main Causes of Engine Misfire

1. Injector Malfunctions

Injectors play a key role in the proper fuel delivery. If one is clogged or operates unevenly, the mixture in the cylinders loses its correct proportions. This can lead to:

  • jerks while driving;
  • unstable idle speed;
  • loss of power;
  • increased fuel consumption.

How to resolve:

At Autopark-Service, we perform professional injector diagnostics, ultrasonic cleaning, or replacement if necessary. This quickly restores the engine to stable operation.

2. Issues with Spark Plugs or Coils

One of the most common causes of misfiring is a malfunctioning ignition system. Worn-out or “flooded” spark plugs do not provide the required spark, while faulty coils miss the ignition in one of the cylinders.

Signs:

  • the car stalls at idle;
  • detonation and vibrations;
  • loss of power during acceleration.

Solution:

At the service center, we check the condition of spark plugs, measure coil performance, and replace them as needed. This is one of the quickest procedures, which often completely resolves engine misfiring.

3. Errors in the Control Unit (OBD)

Modern cars have electronic systems that control engine performance. Any issues with sensors or controls are recorded in the OBD system.

Possible issues:

  • mass air flow (MAF) sensor;
  • crankshaft position sensor;
  • oxygen sensor (lambda sensor);
  • engine temperature sensor.

How Autopark-Service resolves it:

At Autopark-Service, we perform computer diagnostics, read error codes, determine the exact cause of the malfunction, and immediately offer a solution. This allows us to quickly pinpoint the problem and avoid expensive repairs.

4. Fuel System Malfunctions

If the fuel is supplied unevenly or under insufficient pressure, the engine begins to misfire. Common causes include:

  • clogged fuel filter;
  • weak fuel pump;
  • pressure regulator issues;
  • air intake in the fuel line.

Solution:

At Autopark-Service, we perform complete diagnostics of the fuel system:

  • pressure check;
  • pump inspection;
  • fuel line testing;
  • filter cleaning or replacement;
  • eliminating air intake.

Proper system adjustment restores stable engine performance.

Why It’s Important to Fix Misfiring Immediately

Ignoring the problem can lead to:

  • burned valves;
  • damage to the catalytic converter;
  • uneven engine wear;
  • increased fuel consumption;
  • dangerous stalls during overtaking.

The sooner diagnostics are performed, the cheaper and easier the repair will be.

How Autopark-Service in Lviv Helps to Fix Engine Misfire

At our service center, we perform:

  • professional ignition diagnostics;
  • injector inspection and cleaning;
  • OBD error code reading;
  • comprehensive fuel system inspection;
  • sensor testing;
  • engine adjustment and repair.

Our specialists have extensive experience working with vehicles of all brands — from budget models to premium cars.

Conclusion

Engine misfire is a common but serious issue. In most cases, it can be resolved quickly if you contact a professional service center in time. Autopark-Service in Lviv offers comprehensive diagnostics and precise identification of the cause, allowing for a prompt return to stable and safe operation.