Usually a sputtering muffler means that a new catalytic converter is needed. The sputtering sound is the car misfiring.
I sometimes sputter when I'm nervous. Please reword the question and tell me what year and engine and describe what you are doing with the car when "sputtering" occurs. Would help if you can think of additional description of what you mean by "sputtering".
You go to a mechanic!
I have a 1999 ford taurus 24 valve 6 cylinder car that when it gets hot it starts sputtering and shuts off. Once cooled down car starts and runs till it gets hot again. Thanks Peg
If a car is sputtering at high RPMs, the fuel pressure needs to be checked. If the fuel pump can't keep up, this will cause sputtering. Also, the car should be checked to make sure the valves are adjusted properly.
It needs a tune up.
Timing issue, poor ignition.
ggd
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It does not always mean that will happen, but it is certainly a common cause and if your car is sputtering and bogs down it would be one of the first things to check.
it will feel as if you are running out of gas, the car will start sputtering.
Sputtering is almost like a person spitting. The car runs but it doesn't have full power, could actually sound like someone spitting. Missing is when there is a consistent and constant slight jerking or vibration. Unless it is really bad it is hard to feel.