The most common causes of engine misfires are: worn spark plugs, weak fuel injector, vacuum leak, worn valve seals, carbon tracking, and no voltage at the coil.
Misfiring engines should be looked at as soon as possible, as the problem can worsen over time and damage internal components of the vehicle.
Can a misfire ruin an engine?
In the longer term, continuing to drive it that way could destroy a coil and cost you more money. If, however, the misfire is caused by an injector problem, you could seriously damage your engine. Running that cylinder too lean will cause it to overheat and potentially damage the valve or the piston.
What does an engine misfire feel like?
An engine misfire is a sensation that you should instantly recognize. Misfiring will cause increased exhaust emissions, reduced fuel economy and reduced engine power. A single misfiring spark plug can dump enough raw fuel into the exhaust to overheat and damage the catalytic converter.
How do you know if your car is misfiring?
Below are some of the common warning signs that indicate faulty spark plugs in a car.
- Engine Misfiring. An engine misfire results in the engine to stop for a moment and then regain its normal operation.
- Starting Trouble.
- Increased Fuel Consumption.
- Lack of Acceleration.
- Uneven Idling.
Photo in the article by “Car Talk”