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Want to learn more about Fuel Injector repairs?

Read our short guide with information on costs, symptoms and more.

What does a Fuel Injector do?

The fuel injectors are part of the fuel supply system of the engine (provided it is a petrol engine), they usually inject the fuel directly into the cylinders, but in some cars the injectors are situated in the inlet manifold. The injectors diffuse the fuel, which then mixes with the air being let into the engine by the inlet valves and, in turn, the spark plugs will ignite the mixture to combust.

What does a fuel injector replacement involve?

  • Mechanic will read the ECU for possible fault codes related to the fuel system.
  • Mechanic will inspect the fuel supply system and the fuel injectors.
  • If necessary, the mechanic will replace the faulty fuel injector.
  • Mechanic will advise if any other parts need to be replaced.
  • Mechanic will inspect the fuel supply system again for any leaks and test drive the car.
  • Mechanic will make adjustments if necessary.

Can I do a fuel injector replacement myself?

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a fuel injector replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

What are the symptoms of a faulty fuel injector?

  • When the engine runs rough, with abrupt power peaks.
  • When there are wet patches around the injectors on the outside of the engine.
  • When the 'Check Engine' light on the car's dashboard is on.
  • When the car doesn't perform as well as usual under acceleration.
  • When there is a strong smell of fuel in the engine bay.
  • When the car's fuel consumption is higher than usual.

How long does it take to replace fuel injectors?

The time it takes to replace a fuel injector or fuel injectors can range from under 1 hour to 4 hours, this will depend on a number of factors like your vehicle's make and model, year, and how many injectors need replacing. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

How often should I replace a fuel injector?

Over time, the fuel injectors can be affected by dirty fuel which will mean that the injectors can clog up. In turn the injectors will not be able to diffuse the fuel optimally. In most cases it means that the fuel lines or fuel tank have started to corrode. Alternatively, it can be that the fuel filter has become ineffective, not filtering out debris as it should. All of this leads to engine misfires and therefore an engine that does not run smoothly.

Should you experience problems with the fuel supply, then it is advisable to have the fuel supply system and the fuel injectors inspected and, if necessary, have the fuel injectors replaced. Seeing that the fuel injectors are especially prone to deterioration over time they should always be replaced as and when stipulated in the guidelines set out by your car's manufacturer.

How much does it cost to replace diesel fuel injectors?

The cost of replacing a diesel fuel injector will depend on your car's make and model, location and what parts your car's manufacturer recommends using for the replacement. Select your car at the top of this page to find out what you could save by having your fuel injector replaced by ClickMechanic.

Can you drive with a bad fuel injector?

If you suspect there is any issue with a fuel injector or there are concerns about its age or condition, book an inspection with a professional mechanic as soon as possible, driving the vehicle may lead to further complications or damage.

Is a faulty fuel injector an MOT failure?

Yes, if there's visible leak on a fuel injector can lead to an MOT failure. Any leaks in the fuel system will normally lead to an MOT failure, and hence it is possible the same can happen for an injector. However, injectors are usually hidden beneath engine covers which are not removed during an MOT so the chances of an MOT tester being able establish a visible leak with the injectors is small. That said, an issue with an injector will have an impact on engine performance and will likely result in excess emissions, which can also lead to an MOT failure. If you have a faulty injector it is imperative to get it checked and fixed as soon as possible by a professional mechanic. A fuel leak is a fire hazard and can be dangerous.

Is it worth replacing fuel injectors?

Yes, it can be worth replacing fuel injectors if you want to ensure optimal performance of the engine. Fuel injector play a vital role in the engine's combustion cycle and it's important they are in a good condition. Sometimes fuel injectors can be refurbished, which can help reduce the cost in getting any injector issues fixed.

Should you replace all fuel injectors at once?

Yes, in certain cases it can be worth replacing all the fuel injectors at once. Many times an issue with one injector will likely mean that the others will be on their way out too, provided they were all instaleld at the same time. Replacing them all at once therefore can save hassle and money, as if the others go as well in future you'll have to pay for the labour again. That said, many fuel injectors can be very expensive so it's worth weighing up whether the potential money saved in labour outweighs the cost of a whole set of new or refurbished injectors.

How much does it cost to fix a fuel injector?

Fixing a fuel injector by reconditioning or cleaning it can be a lot cheaper than buying a new one, prices for that can range from £50 to over £150 (excluding removal and refitting labour fees). It is worth noting that after testing the injector it may be deemed as too far damaged to be fixed at which point a replacement injector will need to be sourced.

Can leaky injectors be fixed?

Yes, leaky injectors can be fixed. Many times leaks are caused by broken or worn o-rings or injector seals, replacing these can be a first step towards fixing a leaky injectors. Sometimes, however, the injector unit itself may have become leaky at which point the injector will need replacing.

Can you replace just 1 fuel injector?

Yes, you can replace just 1 fuel injector but whether that's advisable will depend on the issue on your vehicle and cost considerations. Often replacing 1 injector may turn out more expensive in the long run. It's likely other injectors will have deteriorated at the same rate as well requiring further replacements in due course as well, meaning that you'll have to pay for the same labour again. However, this will depend also on the cost of the injectors which can be very expensive, you will need to weigh up whether replacing just 1 injector is worth the risk in the long run.

How much does it cost to clean fuel injectors?

Cleaning injectors can cost from £50 to over £150 per injector, depending on the type of injector. Cleaning fees usually do not include the labour cost of removing and re-fitting the injectors.

How much does it cost to unclog a fuel injector?

The cost of unclogging an injector normally ranges from £50 to over £150. The exact price will depend on the type of the injector and the work required to clean the injector to the right standard.

Is fuel injector replacement covered by warranty?

It is highly unlikely that fuel injector replacement will be covered by warranty as it is a considered a wear and tear component. However, it is best to check the details of the manufacturer's warranty as in some cases select components of the fuel injector replacement may be covered under warranty.

How much does it cost to replace fuel injectors?

The cost of replacing a fuel injector can range from £150 to over £1000, this will primarily depend on your vehicle model and the type of injector recommended by your car's manufacturer. Find out what you could save by having your fuel injector replaced by ClickMechanic by selecting your car at the top of this page!

Check out the ClickMechanic price for a fuel injector repair, and find out what you would pay at a franchise dealer. We use industry standard data & millions of data points so you know what you should be paying. These estimates may include Injection ECU, Injector seals (set), Injector, Manifold absolute pressure (MAP) sensor, Injection/fuel pump drive belt/chain, Injection pump and/or Injector. We have fuel injector repair prices for 47 different manufacturers.

Name ClickMechanic Click Mechanic average Franchise dealer estimate

Alfa Romeo

£1498 £1,726 - £1,929 Get exact price


£2231 £2,295 - £3,390 Get exact price


£1703 £1,755 - £2,453 Get exact price


£667 £866 - £866 Get exact price


£2244 £2,777 - £2,807 Get exact price


£1848 £2,119 - £2,289 Get exact price


£1527 £1,661 - £2,159 Get exact price


£2231 £2,787 - £2,787 Get exact price


£890 £656 - £1,169 Get exact price


£510 £639 - £639 Get exact price


£2067 £1,932 - £2,920 Get exact price


£1364 £1,339 - £1,339 Get exact price


£1417 £1,454 - £1,958 Get exact price


£1746 £1,962 - £2,358 Get exact price


£2015 £1,872 - £2,641 Get exact price


£1708 £1,865 - £2,505 Get exact price


£2574 £2,517 - £2,517 Get exact price


£1627 £1,746 - £2,115 Get exact price


£1926 £2,206 - £2,604 Get exact price


£1696 £1,868 - £2,228 Get exact price


£1929 £1,952 - £2,890 Get exact price

Land Rover

£1757 £1,685 - £2,812 Get exact price


£1708 £1,907 - £2,246 Get exact price


£3583 £4,403 - £4,582 Get exact price

London Taxi's International

£2189 £2,132 - £2,132 Get exact price


£2096 £2,032 - £3,323 Get exact price


£1740 £1,756 - £2,532 Get exact price


£907 £1,128 - £1,302 Get exact price


£319 £277 - £469 Get exact price


£1123 £835 - £2,548 Get exact price


£1874 £1,895 - £2,848 Get exact price


£1525 £1,649 - £2,089 Get exact price


£1187 £1,579 - £1,579 Get exact price


£504 £660 - £660 Get exact price


£1578 £1,729 - £2,133 Get exact price


£1103 £1,414 - £1,436 Get exact price


£1546 £1,768 - £1,967 Get exact price


£2183 £2,318 - £3,341 Get exact price


£2161 £2,247 - £3,407 Get exact price


£819 £1,012 - £1,047 Get exact price


£1971 £2,369 - £2,545 Get exact price


£1109 £1,289 - £1,742 Get exact price


£1358 £1,605 - £1,732 Get exact price


£2280 £2,010 - £3,476 Get exact price


£1651 £1,770 - £2,247 Get exact price


£2284 £2,232 - £3,485 Get exact price


£1689 £1,831 - £2,458 Get exact price

Prices could not be created for 33 models. Show ∨

  • Microcar
  • Metrocab
  • Hummer
  • Reva
  • Asia
  • TVR
  • Ferrari
  • Morgan
  • Buick
  • Lamborghini
  • Pontiac
  • Carbodies
  • Mitsubishi Fuso
  • Moskvich
  • Bentley
  • Ford US
  • Aixam
  • Austin
  • Daimler
  • FSO
  • Maybach
  • Rolls-Royce
  • Santana
  • Tata
  • Great Wall
  • Piaggio
  • Perodua
  • Infiniti
  • Aston Martin
  • Lada
  • Lancia
  • Lotus
  • Maserati

Estimates on repair costs, such as the above results for a fuel injector repair, are created by combining data from multiple third-party sources. The actual cost of using your local repair providers may be outside of the estimated range. We provide estimates on repair costs for information only and accept no liability for any inaccuracies or errors. If you think an estimate is incorrect, please contact us to let us know.

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Recent Fuel Injector repair quotes

These recent quotes were taken from our quote engine which uses third-party industry standard data on repair times, along with a live parts retailer, and a regional labour rate to build an accurate free quote. We are constantly improving our quote engine, so please let us know if a price seems incorrect.


Fuel injectors replacement (all)

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Kia Sorento

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Audi A3

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