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Expert Advice: A Guide to Engine Misfires

Engine Repair in Mesa, AZ

The engine is the heart of your vehicle, which is why you should pay attention to engine misfires. A misfire occurs when there is a fault in the combustion process within the engine. In ideal conditions, the proper fuel-to-oxygen ratio will lead to successful ignition. When the balance is thrown off by defective components, the next step is to schedule engine repair to prevent more serious problems. Here's what you should know about spotting and fixing misfiring.

Symptoms of a Misfiring Engine

Decreased vehicle performance is a common result of misfires. As your vehicle moves forward, you'll experience a jerking or surging sensation, particularly as RPMs increase. You may also feel similar surging while the car is idling. If the balance inside the engine is thrown off by a misfiring cylinder, the vehicle may shake and vibrate. Severe misfires can even trigger the check engine light.

Causes of Engine Misfires

Worn Spark Plugs

Spark plugs ignite the fuel-oxygen mixture in your vehicle. As they wear down, they're less capable of providing the necessary spark for ignition. The good news is that worn spark plugs are easily replaced for improved performance.

Faulty Fuel System

Dirty fuel filters reduce fuel pressure, which throws off the balance in the engine. In this case, replacing the fuel filter should improve fuel pressure and stop misfires from occurring. An engine repair specialist can help you determine when the filter should be changed. In most cases, replacements should occur every 10,000 to 50,000 miles, depending on your vehicle and driving habits.

The fuel pressure regulator ensures the engine receives the right amount of fuel to operate. When it's defective, it can also cause low pressure. Fuel system issues usually result in more problems while a vehicle is idling rather than when it's in motion. If the pressure regulator is to blame, the component must be replaced.

Malfunctioning Oxygen Sensor

If there's not enough oxygen in the system, the oxygen sensor may have a problem. If the sensor is unable to maintain the proper balance in the engine, you'll experience poor performance and a loss of fuel efficiency. Your vehicle is also likely to fail emissions testing. While bad oxygen sensors can't always be repaired, they can be replaced.

If you run into engine issues, seek engine repairs at Stapley's Garage in Mesa, AZ. Their ASE®-certified mechanics have provided reliable repairs and maintenance to local vehicle owners since 2014. Along with repairing damaged components, they also perform total engine replacement. Call (480) 633-5505 to request a free estimate on engine repair, or visit the website to learn more about their Engine Repair or other services.

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