If your semi is experiencing engine misfires, it could spell trouble. We uncover the reasons why your semi's engine may be misfiring and what you can do about it below. When your semi needs engine repair in Greenbrier or Springfield, Arkansas, give Custom T Repair a call.

What Is an Engine Misfire?

An engine misfire happens when one or more cylinders in your truck's engine fail to ignite the fuel-air mixture at the right time. This disturbs the smooth firing sequence, resulting in anything from shaky idling to a significant reduction in performance. Causes range from worn-out spark plugs to malfunctioning ignition coils and dirty fuel injectors. Identifying and correcting engine misfires as soon as possible is critical to keeping your semi truck running smoothly and preventing further damage. 

Damaged Spark Plugs

Damaged spark plugs are a major cause of misfiring in semi truck engines. These small but necessary components play a significant role in igniting the gasoline and air combination within the engine cylinder. When spark plugs are broken or worn out, they struggle to generate the required spark, resulting in misfires. Rough idling, poor acceleration, and even reduced fuel efficiency are all common indicators of damaged spark plugs. Regular inspections and prompt replacement of spark plugs are critical maintenance tasks for keeping your truck’s engine running properly. 

Dirty Fuel Injectors

Fuel injectors spray fuel into the engine cylinders to ensure optimum combustion. Over time, dirt, debris, and carbon deposits can build up on the fuel injectors, interfering with the exact fuel distribution required for optimal engine performance. When fuel injectors become dirty, the mixing of fuel and air is not optimal, resulting in misfires and a variety of performance difficulties. Regular maintenance, such as using fuel system cleansers and keeping fuel filters clean, will help prevent deposits from forming and keep your semi’s engine running smoothly.

Faulty Ignition Coils

Ignition coils produce the high-voltage spark that ignites the fuel-air mixture in the engine cylinders. When an ignition coil fails, it might produce uneven or weak sparks, resulting in misfires. Rough idling, slow acceleration, and lower fuel efficiency are common signs of malfunctioning ignition coils. Regularly inspect and repair faulty ignition coils to prevent misfires.

Diesel Engine Repair in Greenbrier

With more than 40 years of hands-on experience and access to modern diagnostic equipment, there is no diesel engine problem the team at Custom T Repair can’t solve. Our diesel engine mechanics can perform any service necessary to ensure your truck continues to run strong. This includes everything from fixing engine misfires, replacing faulty glow plugs, and installing new gaskets and seals to complete diesel engine rebuilding. If your truck suffers from power loss, increased exhaust smoke, no start or hard start issues, decreased fuel economy, or other issues, don’t hesitate to call us at (501) 208-4730 for diesel engine diagnostics. We’d be happy to provide a quote for the cost of semi truck engine repair in Greenbrier, AR.