What causes a car to hesitate when you accelerate?
A vehicle that hesitates while accelerating or while driving up a hill may have a weak fuel pump. Fuel injectors may become dirty over time and not be able to provide as much fuel to the cylinder as is needed. Dirty fuel injectors may cause the engine to run lean which will in turn, cause hesitation when accelerating.
What can cause engine hesitation?
Common Causes Of Engine Hesitation Include:
- Dirty Air Filter.
- Stuck Or Failed Mass Airflow Sensor (MAF)
- Clogged Or Leaking (EGR) Valve.
- A Failing Ignition Coil.
- A Failing Throttle Position Sensor (TPS)
- Clogged Fuel Injectors.
- Dirty Or Clogged Fuel Filter.
- A Failing Oxygen Sensor (O2)
What happens if you have a bad spark plug?
If a spark plug or multiple spark plugs are faulty, they will have trouble creating the spark that causes the ignition process in your vehicle. This results in your vehicle having trouble starting,hesitating or having issues with accelerating properly.Rough starts, hesitation and poor acceleration are all common symptoms of a bad spark plug.
Why does my car engine hesitate during acceleration?
Dan Ferrell writes about do-it-yourself car maintenance and repair. He has certifications in automation and control technology. Engine hesitation can be hard to diagnose at times. When your engine hesitates during acceleration, it may seem to have lost its power for a few seconds.
Can a bad spark plug cause an engine to vibrate?
Rough Idle. A bad spark plug may cause your engine to sound rough while idling. The vehicle-encompassing, jittery sound will also cause your vehicle to vibrate. It can indicate a spark plug problem in which a cylinder misfires only while idle.
What happens when a spark plug gap is too big?
Excessive spark plug gap results when the voltage has too far to travel. The increased length of the spark travel weakens it, robbing it of the hot, strong ignition charge it needs to fire the plug. Excessive plug gap also results in cylinder misfiring, a possible no-start condition, wet, black or fouled plugs, engine hesitation and rough idle.