What would cause a car to putter when pressing down on the accelartor?

Dirty or Failing Spark Plugs – The job of a spark plug is to ignite the fuel in the combustion chamber. Therefore, if one is dirty or faulty, your engine will struggle to start and sputter when you hit the gas. ... A clogged fuel injector nozzle causes a car engine to shake and struggle to accelerate.

1. What would cause a car to putter?
2. Why does my car hesitate when I press the gas?
3. Why does my engine bog down when I give it gas?
4. Why is my car not accelerating when I press the gas?
5. What does a bad injector sound like?

What would cause a car to putter?

The most common reason your car engine is sputtering is because of an issue with the fuel system. This can be caused by a bad fuel filter, fuel pump, or fuel injector. It can also be caused by spark issues from bad spark plugs or ignition coils. While these are not all the possible causes, it's a good start.

Why does my car hesitate when I press the gas?

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.

Why does my engine bog down when I give it gas?

The feeling is unmistakable. Your engine either seems to bog down when you hit the gas pedal, or it takes a second or two to respond. ... An engine that hesitates when accelerating is either sucking too much air, not getting enough fuel, or misfiring.

Why is my car not accelerating when I press the gas?

If your vehicle's fuel filter is dirty or clogged, this will prevent your engine from getting enough fuel. ... Or it could be an issue with the fuel pump. A defective fuel pump will not supply enough fuel to the injectors. A leaking fuel line can also be a reason your vehicle will not accelerate.

What does a bad injector sound like?

As with misfiring, this is normally down to the injector nozzles being clogged with particles, which interfere with the atomisation and spray of the fuel. Several faults can cause a rough idle noise, including a bad spark plug or a dirty air filter, but clogged injectors are one of the most common reasons for this.