An engine misfire can cause your vehicle to run poorly, which can be aggravating. Understanding the reasons for engine misfires is essential for solving the problem. We examine the most common causes of engine misfires, as well as how our skilled mechanics can detect and repair the issue below. If your vehicle is showing signs of an engine issue in San Rafael, CA, visit Auto Repair Specialist.

What Is an Engine Misfire?

Misfires occur when one or more cylinders in an internal combustion engine fail to ignite the air-fuel mixture at the right time. This interruption causes power loss, rough idling, and, in some cases, perceptible vibration or shaking in the car. 

The Most Common Causes of a Misfire

Misfires can be caused by a variety of circumstances, including malfunctioning spark plugs or ignition coils, blocked fuel injectors, vacuum leaks, or problems with the air-fuel combination. When spark plugs fail to ignite the fuel-air mixture at the proper time, or if the fuel supply is interrupted, it results in incomplete combustion and subsequent misfiring.

A vacuum leak caused by a ruptured hose or gasket, as well as mass airflow sensor failures, can cause an imbalance in the air entering the engine. These airflow issues can lead to misfires by altering the tightly controlled air-to-fuel ratio.

How To Prevent a Misfire

Preventing engine misfires requires regular maintenance and careful attention to various parts. It is critical to follow the prescribed maintenance plan for spark plug replacement, as worn spark plugs are a typical cause of misfires. Routine inspections and replacements of ignition coils, fuel injectors, and the air filter help to ensure optimal combustion efficiency. Maintaining a clean fuel system through the use of quality gasoline and additives can also help reduce misfires caused by clogged injectors. Regular inspection of the vehicle's sensors, such as the mass airflow sensor and oxygen sensors, aids in the detection of potential problems before they cause misfires.

Engine Repair in San Rafael

At Auto Repair Specialist, our expert mechanics provide professional engine repair in San Rafael for all gas and diesel-powered cars and light trucks. If you've noticed an engine oil leak, increased exhaust smoke, engine knocking noises, the check engine light, or a general decrease in performance or fuel efficiency, see us for engine diagnostics or give us a call at (415) 612-3933 to schedule an appointment! We'll complete a thorough analysis of the situation and let you know what your options are. As necessary, our engine shop can complete an engine swap to restore the driveability of your car or truck without worrying about ongoing issues.