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Rock Sam

Rock Sam 5/31/2019

2016 BMW 535i Luxury 6 Cyl 3.00L


What are the causes if car is sputtering when step on the gas?

1 Answer

Partsavatar TR

Partsavatar TR 5/31/2019

Your car is asking for help if it starts sputtering when you step on the gas. Sometimes, this is happened when you're about to run out of gas but it could be something more serious like an issue in the fuel or exhaust system, including dirty or worn-out parts also.

Why it's so important to fix the problem ASAP?

A Problem in the Fuel System

One of the most common causes of a sputtering engine is an issue with the vehicle's fuel system-the fuel filter, fuel pump, and injectors. These three critical components work together to ensure fuel flows smoothly from the fuel tank to your engine's fuel injectors, and then pumps into the engine evenly. This process produces the perfect mixture of fuel and air, which generates the combustion that powers your vehicle.

In an interconnected system, a fuel filter, pump, and injectors work together and dirt and debris need only clog one part to cause the others to fail due to whichyou can face poor engine performance or even complete engine failure.

Recommends a once-a-year cleaning of your vehicle's fuel system to better avoid such troubles. Be sure to check your owner's manual to determine whether an annual cleaning is sufficient, or whether your vehicle needs the service more frequently.

Worn Out Spark Plugs

Sputtering could also be a sign that your vehicle needs new spark plugs, which are among the most critical parts of your engine. The mighty spark plugs "spark" the air and fuel mixture in the engine and send power surging through your vehicle. If they're dirty or otherwise not working well, you might eventually wind up being unable to even start your vehicle.

A Dirty Mass Airflow Sensor

A dirty mass airflow sensor could also be to blame for a sputtering engine. It keeps track of the temperature and weight of the air going in the engine as part of the process of fuel injection. Many problems can be triggered by a dirty sensor like poor engine performance and reduced gas mileage.Take your car to a mechanic to see whether your mass airflow sensor needs to be cleaned or replaced.

A Faulty Catalytic Converter

The engine could also be sputtering because of a failing catalytic converter.The catalytic converter reduces the amount of pollution coming from your car. This component, part of your vehicle's exhaust system, works by converting harmful compounds like carbon monoxide, nitrous oxide, and hydrocarbons into less harmful compounds such as water and carbon dioxide.

Regardless of what's causing the sputtering, it's critical to address the issue as soon as possible to prevent costly, long-term damage to your car, as many of these issues could lead to complete engine failure.


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