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Fuel injector replacement

Find fuel injector specialists and compare fuel injector replacement costs

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Fuel injection replacement

What is a fuel injector?

The fuel injector makes up part of the car’s fuel system. Together with the fuel filter and pump, the injector is connected in a system under the hood. These components are responsible for making sure the engine receives the correct mixture of fuel and air. 

Here's a broad idea of how the complete fuel system works:

1) The fuel pump sends fuel to the injector

2) The fuel injector sprays fuel into the intake manifold as specific angle

3) Air and fuel mix inside the intake manifold

4) The mixture of air and fuel is then compressed in the combustion chamber which ignites the chemical reaction for the engine to be powered.

Thus, the car’s fuel injector is made to provide fuel to the engine and reduce the level of emissions. Sensors in your car dictate to the injector how much fuel is to be sprayed, and when.

Fuel injector replacement average costs

The average cost of a fuel injector replacement or repair booked via WhoCanFixMyCar is £157.19.

The exact cost will depend on where you take it. The table below gives you a general idea of the costs for common car makes.

Car MakeAverage Price
Audi£229.75
BMW£160.56
Citroen£202.74
Ford£116.83
Mercedes£90.80
Nissan£186.20
Peugeot£188.29
Renault£132.40
Toyota£142.75
Vauxhall£115.39
Volkswagen£112.50
Volvo£139.29

Top warning signs that your fuel injector needs to be replaced

Here are a few signs there might be something wrong with your fuel injectors.

  • Rough idling

  • Dirty fuel injectors may cause your vehicle's engine to misfire

  • Having bad fuel injectors can cause you to get less mileage out of your fuel. 

  • Vehicle's RPM needle starts to move unpredictably.

  • Fuel injectors deliver fuel to the appropriate cylinders. When the ratio of air and fuel in your engine is not right, your vehicle may not generate the combustion it needs to start.

Any of the above symptoms indicate that you need to have a specialist inspect the fuel injector to diagnose the issue.

  • Fuel injector replacement

    The average cost of a fuel injector replacement booked on WhoCanFixMyCar is £79.19.

    Your fuel injector is there to make sure the correct amounts of fuel and air are received by your engine, When your fuel injector is faulty, it can leave your engine damaged and become a costly repair.

    Can include
    • Diagnosis
    • Fuel injector replacement
  • Mobile mechanic

    The average cost of a mobile mechanic booked on WhoCanFixMyCar is £62.54.

    A mobile mechanic will visit you at your home or workplace and can carry out a wide range of different repairs. If the repair is more complex, the mechanic will collect your car, take it to a garage to be repaired, and drop it off when it's finished. The exact cost of a mobile mechanic will depend on the repair you need.

    Can include
    • Home visit
    • Servicing
    • Tyre change
    • Oil change
    • Recommended repairs
  • Car diagnostic test

    The average cost of a car diagnostic booked on WhoCanFixMyCar is £48.

    Car diagnostics testing involves plugging your vehicle into special software that can reveal issues with its engine, electrical system, transmission, braking, exhaust system, and more. A specialist will run tests on your vehicle to expose the cause of any problems you're having with your car.

    Can include
    • Full diagnostic testing
    • Recommended repairs

Which fuel injection system service do you need?

If you think there is any problem with the fuel injection system or there are worry about its age or condition, book a service with a skilled mechanic as soon as possible. Here are some fuel injection services you can book:

Fuel injection service

Is your car feeling sluggish to drive? Maybe it lacks power during acceleration? Or if you notice a decrease in fuel economy, then any of these can indicate a build-up of carbon in your fuel system. A fuel injection service flushes all the carbon deposits built up from your fuel injector system.

Fuel injector testing

You can book fuel injector testing and cleaning service for most modern fuel injectors. Over time fuel injectors tend to get blocked or deteriorate due to wear and tear, so having them checked if you experience problems of higher fuel consumption is a good idea. 

Fuel injector repair

Clogged fuel injectors can be repaired in most cases, if you take the car into a garage sooner rather than later. Sometimes a fuel injector is completely clogged if an early warning sign is missed, in which case the problem is more severe.

Fuel injector replacement

Replacing a fuel injector is often the last resort. If an owner has neglected maintenance services like oil changes and filter replacements, chances are the fuel injectors will suffer. The cost of replacing the fuel injector is around £157.19 on average.

I don’t know

Unsure of whether your fuel injector is the problem? Book your car for a diagnostic and the mechanic will be able to tell you whether the fuel injector is the problem.

Common fuel injector problems

Here are some problems that can arrive from faulty fuel injectors systems:

  • Clogged fuel injectors are a problem because they stop the fuel from reaching the intake manifold.

  • Dirty fuel injection.

  • Leaking fuel injection. 

  • Misfiring engine

  • Uneven power in the engine. 

  • Lower fuel economy.

What impacts the cost of fuel injector replacement or repair?

Various factors impact the cost to replace a fuel injector. Smaller vehicles with less cylinders will need less expensive parts for fuel injector replacement.

Bigger, high-performance engines demand elevated prices for replacement parts and labour because these cars typically need more time when getting fixed up as well due to their complex builds and mechanisms.

Is fuel injector replacement or repair necessary?

A faulty injector can damage an engine and will have to be replaced without delay to restore optimum functionality. The fuel injectors are a very crucial part of your engine and without them the proper amount of fuel will not be delivered for the car to run.

Find fuel injector specialists near you

We can help you find local fuel injector repair specialist garages. If you have identified that your fuel injector needs attention, the next step is to find a trustworthy garage to carry out the service.

WhoCanFixMyCar’s large network of garages and mobile mechanics can help repair, service or replace your fuel injector. We help you find and compare quotes from reputable garages near you who will be trained to service your vehicle.

What is the function of the fuel injector?

The fuel injector makes up part of the car’s fuel system. Together with the fuel filter and pump, the injector is connected in a system under the hood. These components are responsible for making sure the engine receives the correct mixture of fuel and air. 

Thus, the car’s fuel injector is made to provide fuel to the engine and reduce the level of emissions. Sensors in your car dictate to the injector how much fuel is to be sprayed, and when.

What are the main problems that a fuel injector can have?

There are three main issues that a fuel injector will face, which include:

• Fuel injector comes to be clogged.

• Fuel injector becomes dirty.

• Fuel Injector leak.

Other issues, such as computer errors or failing sensors, can cause the fuel injectors to act inaccurately.

Can I continue to drive with bad fuel injectors?

While fuel injector problems normally give warning signs that they need attention, driving your car for a prolonged period then the clogged or bad fuel injector will cause certain problems. You may notice increased fuel consumption, a visible increase in tailpipe smoke and emissions, rough idle and reluctance during acceleration.

How long does it take to replace fuel injectors?

Fuel injector replacement by a qualified mechanic takes about 4-6 hours.

Is a fuel injector replacement covered by warranty?

There are many components involved with a fuel injector and they can fail as a result of normal wear and tear or lack of maintenance, so they will not be covered under the warranty.

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