Why does my car misfire only on startup?
If the engine is warm, It does not appear to have the misfire on startup. At least I don’t remember it doing so. Maybe a handful of times in the past month if it did.
What are the symptoms of an engine misfire?
This could be followed by exhaust smoke coming out of the tailpipe, the smell of gas, and loud popping sounds. When you experience these symptoms, you likely have an engine misfire (aka cylinder misfire).
What causes a misfire after a warm up?
Misfire After Warm Up: Misfire After Warm Up. Runs Great When Cold… Misfire after warm up. Runs great when cold. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. have the same problem? This sounds like you have an intake valve that is leaking.
Can a car misfire on a cold start?
Never had an issue with it since my Wife got it from her aunt in 2011, Her aunt bought it new. Recently it has developed a misfire upon start up, about 2/3rds of the time on cold start. The misfire only lasts for a few seconds, longest was maybe 10 seconds. It then clears up and the car runs fine.
What are the signs of an engine misfire?
However, a misfire will be considered in conjunction with the following signs: 1 Check engine light 2 Engine stalling 3 Rough idle 4 Slow acceleration 5 Excessive fuel consumption 6 Hard starting the vehicle 7 Low fuel pressure 8 Low compression More
Misfire After Warm Up: Misfire After Warm Up. Runs Great When Cold… Misfire after warm up. Runs great when cold. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. have the same problem? This sounds like you have an intake valve that is leaking.
Can a loose spark plug cause an engine misfire?
Check your vehicle repair manual for more information about the recommended spark plug for your engine. When installing new spark plugs tighten them to the torque listed in your repair or service manual. Leaving a spark plug loose (under-torquing) will lead to overheating, pre-ignition, or misfires.
What causes a lawn mower engine to misfire?
Malfunctioning valves can also cause the engine to misfire, as the timing of the combustion process is thrown off which can cause the engine to spark at irregular and incorrect intervals. Need Help Finding Your Model Number?