The 9 Best Fuel Injector Cleaning Kits of 2021

Jerry Wilson
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Of all the parts of your vehicle, the fuel injectors are often a neglected component. Most drivers simply aren’t aware of how important the fuel injectors are and how they affect the overall performance of the vehicle.

Without good fuel injectors, your engine will be unable to burn fuel properly, causing you to lose power and drive inefficiently. This means a whole range of problems like loss of power, decreased fuel economy, and more frequent engine repairs.

However, the great news is that these problems can often be avoided simply by cleaning the fuel injectors regularly. That’s where fuel injector cleaning kits come in, and there are quite a few options available!

You’ll find an extensive buyer’s guide below that explains exactly what you’re getting when you buy one of these kits, how to use and maintain them, and which are the best fuel injector cleaning kits of 2021.

NameCategoryProduct
Mityvac MV5565 Fuel Injector Cleaning KitBest OverallMityvac MV5565 Fuel Injector Cleaning Kit
Autool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSIBudget PickAutool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSI
OTC 6550PRO Professional Master Fuel Injection Service KitUpgrade PickOTC 6550PRO Professional Master Fuel Injection Service Kit

1. Mityvac MV5565 Fuel Injector Cleaning Kit

Our rating: 9 / 10

Mityvac MV5565 Fuel Injector Cleaning Kit

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Pros:

  • Comes with 5 flexible cleaning tips
  • Positive stop micron filter tube
  • Includes storage box
  • Open and close handle

Cons:

  • Heavy without fluids
  • Not really suitable for small engines, unless you use it with a syringe

The Mityvac MV5565 Fuel Injector Cleaning Kitis my top pick due to its mobility. It comes with a storage box with 5 flex-tips that you can purchase separately, and open and close handle.

What’s great about this cleaning kit is that it’s convenient to take it out and clean an injector because it comes with an open and close handle. The filter system is equipped with a positive stop micron filter tube that eliminates clogging.

Mityvac also comes with a 6-Volt AC adaptor that’s perfect for your bike because it won’t drain the battery. This fuel injector cleaning kit is extremely efficient as it is easy to use and you can even purchase additional flex-tips that are genuine Mityvac parts. It’s worth noting that despite being powerful enough for most engines, this kit won’t benefit small engines as well.

2. OTC Tools

Our rating: 8 / 10

OTC Tools

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Pros:

  • Professional strength
  • Concise instructions
  • Removes gum, deposits and carbon
  • Reliable

This cleaner kit consists of a professional strength injection cleaner, a one-liter canister and a detailed easy-to-use instruction manual. It works with most fuel systems and is able to remove gum, deposits and carbon within your fuel system.

Compared to other cleaning kits on the market, this one is considered to be stronger, more reliable and easier to use. It does not require removal and disassembly of the fuel tank which in turns cuts down on the time needed to fix your fuel system and canister.

All the items needed to use this kit are included right in the box, including the tubing and spray nozzle. This fuel injection cleaner kit is reliable and efficient, and reviewers love it.

3. OTC 6550PRO Professional Master Fuel Injection Service Kit

Our rating: 8 / 10

OTC 6550PRO Professional Master Fuel Injection Service Kit

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Pros:

  • Comes with most needed items
  • Cheap

Cons:

  • Does not include wiring harness
  • Some parts had to be used on my fuel injector

The OTC Professional Master Fuel Injection Service Kit is easy to carry and portable and includes most of the needed items for a complete fuel injection cleaning.

The injector cleaner holds 16 oz of fluid and the set includes 2 tanks and 4 straws. I have used this kit to clean my fuel injectors and it worked fine. What I liked is that the kit includes the side tank to avoid cross-contamination of cleaner.

The kit includes the neck adapters, a mixing tube and 16 oz of cleaner. The kit also includes a wire fitting wrench to ensure you have the fitting tight enough so that there is good contact with your injector harness. The kit includes 2 fluid filter adapters, 1 nylon wire brush adapter, a 3 inch brush and 2 empty 8 oz bottles.

4. S.U.R. & R. FIC203 Fuel Injection Cleaner Kit

Our rating: 7 / 10

S.U.R. & R. FIC203 Fuel Injection Cleaner Kit

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Pros:

  • Hepa Filter included
  • Durable
  • Perfect for ethanol fuel

Cons:

  • Cheap plastic hoses
  • Some attachments not included

We love this kit for its excellent quality and features. The kit features all the necessary tools for cleaning your fuel injector and fuel system and includes a seven-stage filtration system to filter out any impurities from the fuel in your car.

The kit comes with all high-quality, durable tools and components, including a powerful foam gun cleaner and highly effective injector cleaner for quick and thorough cleaning of the fuel system.

Highly effective for cleaning fuel system components, the kit also includes parts cleaner and lubricator, as well as a cleansing fuel additive.

5. WISAMIC Automotive Non-dismantle Fuel Injector Cleaner Kit and Tester

Our rating: 7 / 10

WISAMIC Automotive Non-dismantle Fuel Injector Cleaner Kit and Tester

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Pros:

  • Easy to use: no deconstruction needed;
  • Effective: Solve your fuel injectors up to 95% clogging;
  • Refillable: only need to pay once to get full use of your kit;
  • Detachable design: all the components can be cleaned by your dishwasher;
  • 500ML tank that can be refilled more than 8 times, saving your cost;
  • No pressure application, only 145 psi needed to run, save your cost;
  • Full Refund Guarantee: You can get full refund if you are not satisfied with it, no tricks to it;
  • Come with a case for more convenient to store;
  • Leak-proof for keeping the cleaner and injectors away from cleanable places;
  • Works perfectly to clean the injectors: with WISAMIC automotive EFI injector cleaner, you can get rid of the fouling and clogging, keeping the injectors work normally;

Output, Refillable System.

6. OTC Tools 7649A Fuel Injector Cleaning Kit

Our rating: 7 / 10

OTC Tools 7649A Fuel Injector Cleaning Kit

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Pros:

  • Full-service fuel injector cleaning
  • Includes all necessary tools for the job
  • Includes custom storage case for the tools

Cons:

  • Can only clean 3 injectors at once (per cleaning assembly)
  • May be overkill for off-road vehicles/vehicle owners

This cleaning kit by OTC Tools is one of the most comprehensive cleaning kits on the market and, more importantly, does the job right. With the seven different tools included in the cleaning kit, your entire fuel delivery system is taken care of. Although OTC Technologies stock number states that it’s for vehicles that produce up to 900HP, it can easily be used for off-road vehicles or vehicles that aren’t used for high performance driving. The kit’s all-purpose capabilities, combined with its top gear filtration system, make it the clear choice for anyone that owns a vehicle with fuel injection.

Rated at 400 fuel injectors per session, this tool will work regardless of the type of vehicle for which you are cleaning the fuel injectors. Sold as a complete kit, it comes with its own custom carrying case for the tools. The case has a sturdy handle along with the pressure relief and safe-lock system for use when transporting your cleaning tools.

7. Autool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSI

Our rating: 6 / 10

Autool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSI

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Pros:

  • 600ml cleaning mix
  • 140psi fuel pressure
  • 17 pieces/tools

This review comes from Harold who purchased the Autool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSI Injector Cleaning tool kit a month ago. The first thing he wanted to share is how the Autool C-100 fits all vehicles and that you can expect great results from all. He did this cleaning using the Autool C-100 with a 2004 Nissan Altima. It is important to note that the pressure must be maintained at 10psi regularly since your fuel tank and injector is under pressure.

His passenger side fuel rail was pieces where the injector was leaking. He secured it before plugging it into the injector and fuel rail. It’s important to remove your fuel pressure regularly for safety reasons.

Since the removal of his fuel rail, he noticed that the O2 sensor was a little peeled. He didn’t want to stick in his finger, so he sprayed some action to spray it down and let it dry in the sun.

8. OTC 4480 Stinger Basic Fuel Injection Service Kit

Our rating: 6 / 10

OTC 4480 Stinger Basic Fuel Injection Service Kit

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Pros:

  • Satisfactory customer service
  • Consultation services offered
  • Great value for money
  • Superior quality
  • Provides necessary tools

Cons:

  • Kit doesn’t contain fuel additives, which is important when cleaning carbon build-up in fuel injectors
  • Plastic case may become damaged
  • Not enough for large shops
  • Comes without a case
  • Smaller sized tools in the kit can be hard to use

OTC has been in business for more than 70 years now and has provided the industry with durable and reliable products. The company is known for its quality products and great customer service.

The engine cleaning kit from OTC is something you can depend on if you’re looking for the ideal fuel injector cleaning solution for small workshop settings. It contains virtually everything you need to clean the combustion chamber and injectors.

The Stinger comes with rim protection spray connections that allow you to clean both the combustion chamber and fuel injector spray tips conveniently. All tools are made of durable cast iron. Also, the tool kit comes with a checklist to help you follow the right procedure for the job. In this way, you don’t risk losing things while cleaning the injectors.

9. Motion Pro Mp Fuel Injector Cleaner Kits 08-0594

Our rating: 6 / 10

Motion Pro Mp Fuel Injector Cleaner Kits 08-0594

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Pros:

  • Sleek and Sturdy Design
  • Chain Drive O-ring Seal

This complete injector cleaning kit includes everything you could need to clean, remove and install mid-range to upper-end fuel injectors in order to restore lost power and keep your engine running smoothly.

Frequently Asked Questions (FAQ)

What is the most effective fuel injector cleaner?

Petrol-powered vehicles rely on fuel-injection systems to provide a consistent and reliable supply of power to the car's engine. In recent years the use of complex pressure-wave technology combined with the use of fuel injectors to create a more environmentally friendly method of internal combustion has become more commonplace.

The problem with fuel-injection is that when the fuel is lubricated by the oil used in newer models, petrol starts to deposit in the fuel injectors. This can cause the fuel system to clog up leading to unwanted and inconsistent car performance, which can even get worse over time.

The most effective fuel injector cleaner—in our opinion—is one that thoroughly cleans the fuel injectors on your vehicle. The best way to do this is to find a fuel system cleaner that cleans the entire system.

Do fuel injector cleaners actually work?

Absolutely! Nobody likes to wait up to an hour to drive their car out of a gas station, especially if you are fueling up your tank multiple times a week. But with a fuel system cleaner you can reduce that wait time to just minutes. The science behind these products are simple, fuel injectors get clogged over time and once they do, your gas mileage drops and your engine needs more fuel to run properly. By investing in a fuel system cleaner you can restore the effectiveness to the fuel injectors. Not only will your vehicle run smoother, you'll also save on gas.

For those drivers with an older vehicles that are due for a tune up, a fuel system cleaner is an essential part of the maintenance process. If your engine is working hard to burn gas, it can cut short the life of the engine. A fuel injector cleaner can extend the life of your engine and reduce the need for expensive repairs.

Is it better to clean or replace fuel injectors?

This is a common question we get from our readers, so we thought we would address it. As a rule the cost to replace fuel injectors is higher than the cost to have them cleaned. The reason is simple – the cost of cleaning will vary depending on the technician you use and their skill level, while the number of injectors you replace is fixed. This means that the percentage of the overall cost coming from fuel injector replacements is greater than the cost of the cleaning.

This doesn’t mean that it’s always cheaper to replace. For example, if the injectors you just cleaned are “choking” and are costing you huge amounts of money in fuel bills every day, then replacing them could be the cheaper choice. However, as a general rule, you’re likely to pay a bit more for having the injectors cleaned.

How much should a fuel injection cleaning cost?

When it comes to the cost of cleaning, a good rule of thumb is to find a kit with the largest number of included parts, for the right price. However, in this case, the included bottles of cleaning solution also play a role. A cheaper fuel cleaner will include a smaller bottle of solution while a more expensive one will include a larger bottle, and sometimes a spare.

Another tool to look for in a cleaner is the power of the gun. A powerful tool will blow the solution through the line more quickly, giving you the best bang for your buck. Finally, consider the longevity of the tool. Most cleaners on the market are reusable, but cheap materials will reduce the lifespan of your tool. If you’re planning to do a lot of work, or you’re generally frugal like me, then it’s worth spending a little more on a tool that will last several years.

Conclusion

It's easy to spend a lot of money on cheap cleaning products that don't do much. It's also easy to spend a fortune on high-end products that don't produce results. With fuel injector cleaner kits, value and efficiency are often in the eye of the beholder. But the market for this niche of the car world is ridiculously vast.

Our Recommendation

NameCategoryProduct
Mityvac MV5565 Fuel Injector Cleaning KitBest OverallMityvac MV5565 Fuel Injector Cleaning Kit
Autool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSIBudget PickAutool C-100 Automotive Fuel Cleaning Tools CFS Series Fuel System On-vehicle Cleaning Assistant Fuel Injector Cleaner 600ML 140PSI
OTC 6550PRO Professional Master Fuel Injection Service KitUpgrade PickOTC 6550PRO Professional Master Fuel Injection Service Kit