The national cost for a fuel system service with CarAdvise in 2024 is between $12 and $90 with an average of $40.

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What does fuel system service include?

The fuel system refers to all of the components that are involved along the path that fuel travels in your vehicle from the time you pump it into the fuel tank until it is sprayed through the fuel injectors into the cylinders to be burned. That includes major components such as the fuel tank, fuel pump, fuel pressure regulator, and fuel injectors. It also includes the tubes or lines that carry the fuel from one place to another. Over time, these components can wear out or become contaminated, making it necessary to have the system inspected and cleaned. A fuel system service aims to verify proper function of the fuel system and restore system components to peak performance.


How is a a Fuel System Service done?

The items included in fuel system service can vary by vehicle make and model, as well as from one repair shop to the next, but generally will include any or all of the following:

  • Visual inspection of the system for external leaks and other problems
  • Inspection of the fuel lines for cracks, kinks, and corrosion
  • Fuel filter replacement
  • Cleaning of the throttle body and mass airflow sensor
  • Measurement of fuel pressure at the fuel rail
  • Chemical cleaning of the intake manifold and intake valves
  • Introduction of a fuel system cleaner through the fuel tank

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National average cost of a a Fuel System Service
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Avg. cost


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How do I know if my vehicle needs a fuel system service?

The internal combustion engine in your vehicle needs four things in order to operate - fuel, air, compression, and a spark to set off ignition in each cylinder. Without a sufficient (and specific) amount of fuel to burn at all times, your engine cannot function properly. If there is a problem somewhere in the fuel system - a failing fuel pump, a clogged fuel filter, or a bad fuel injector, for instance - you will likely notice one or more of the following signs:

A decrease in fuel efficiency

Rough idle or misfiring engine

Poor acceleration

Difficulty starting your engine

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Other questions customers ask

Is a fuel system service necessary?
Fuel system service is available and recommended to help your engine maintain efficiency and peak performance. The service is necessary if you notice signs of problems with the fuel system, such as a decrease in fuel efficiency, rough idling, poor acceleration, or a check engine light related to fuel system problems. If you ignore signs of a faulty fuel system, not only will you spend more money at the pump, but your engine could suffer damage if too little fuel results in a lean air to fuel mixture during combustion.
How do I know if my fuel injectors are clogged?
Clogged fuel injectors will prevent a sufficient amount of fuel from entering the cylinders for combustion. When injectors become clogged, you can expect symptoms to range from a decrease in fuel economy to rough idling or engine misfire. The check engine light might also come on.
What are signs that your fuel filter is bad?
A bad or contaminated fuel filter means that fuel flow through the filter is reduced due to a blockage of some kind. Contaminants in the fuel are trapped by the filter. Over time, the filter becomes clogged enough that fuel no longer passes through at a sufficient rate. This can result in the loss of engine power and/or misfiring, especially when a higher load on the engine is required, such as speeding up to merge onto a freeway or when pulling a trailer. In severe cases, your engine might stall or refuse to start due to a lack of fuel.

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