7 Best Fuel Injector Cleaning Kits – Reviews and Buying Guide

Best Fuel Injector Cleaning Kit

Fuel injector cleaning kits can do a better job than simply pouring cleaning liquid into your car's fuel tank. Every fuel injection system gets particle buildup over time and this usually results in poor engine performance.

While emptying a bottle of cleaning solution into your car's tank works most of the time, there are times when an intensive cleaning becomes necessary, especially when the buildup of dirt and carbon deposits is plenty.

This best fuel injector cleaning kits review presents you with a list of the top cleaning kits in the market, as well as a buying guide and a step by step tutorial on making the best use of them.

You can also read our other product reviews such as fuel injector cleaners​ and carb cleaners​.

7 Best Fuel Injector Cleaning Kits - Reviews

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PRODUCT

​FEATURES

OTC 6550PRO Professional Fuel Injector Cleaning Kit

1. OTC 6550PRO (Professional Fuel Injector Cleaning Kit)

  • Comes with 47 fittings
  • Includes a detailed user guide
  • Comes in a carrying case
Mityvac MV5565 Fuel Injector Cleaning Kit

2. Mityvac MV5565 (Affordable Fuel Injector Cleaning Kit)

  • Affordable package
  • Comes with a wall mount bracket
  • Works on most engines at all pressures
OTC Tools 7448A Fuel Injector Cleaning Kit

3. OTC Tools 7448A (Affordable Stainless Steel Injector Cleaning Kit)

  • Designed for ease of use
  • Made from durable stainless steel
  • Comes with a detailed user manual
OTC Tools 7649A Fuel Injector Cleaning Kit

4. OTC Tools 7649A (Simple Fuel Injector Cleaning Kit with Accessories)

  • Includes the most common adapters for different car
  • Easy to read gauge and stainless steel canister
  • Includes instruction manual
OTC Stinger 4480 Basic Fuel Injection Service Kit

5. OTC Stinger 4480 (Basic Fuel Injection Service Kit)

  • Service kit for general testing
  • Includes many popular adapters
  • Package includes a carrying case
S.U.R. & R. FIC203 Fuel Injector Cleaning Kit

6. S.U.R. & R. FIC203 (Fuel Injector Cleaning Kit with Many Accessories)

  • Versatile kit works on 80% of vehicles
  • 10-piece kit works on gasoline and diesel engine 
  • Comes with a carrying case
Motion Pro 08-0594 Fuel Injector Cleaning Kit

7. Motion Pro 08-0594 (Aerosol Spray Fuel Injector Cleaning Kit)

  • Small and lightweight kit
  • Works without a compressor
  • Solid & rugged aluminum construction

PRODUCT

1. OTC 6550PRO 

(Professional Fuel Injector Cleaning Kit)

OTC 6550PRO Professional Fuel Injector Cleaning Kit
  • Comes with 47 fittings
  • Includes a detailed user guide
  • Comes in a carrying case

2. Mityvac MV5565 

(Affordable Fuel Injector Cleaning Kit)

Mityvac MV5565 Fuel Injector Cleaning Kit
  • Affordable package
  • Comes with a wall mount bracket
  • Works on most engines at all pressures

3. OTC Tools 7448A 

(Affordable Stainless Steel Injector Cleaning Kit)

OTC Tools 7448A Fuel Injector Cleaning Kit
  • Designed for ease of use
  • Made from durable stainless steel
  • Comes with a detailed user manual

4. OTC Tools 7649A 

(Simple Fuel Injector Cleaning Kit with Accessories)

OTC Tools 7649A Fuel Injector Cleaning Kit
  • Includes the most common adapters for different car
  • Easy to read gauge and stainless steel canister
  • Includes instruction manual

5. OTC Stinger 4480 

(Basic Fuel Injection Service Kit)

OTC Stinger 4480 Basic Fuel Injection Service Kit
  • Service kit for general testing
  • Includes many popular adapters
  • Package includes a carrying case

6. S.U.R. & R. FIC203 

(Fuel Injector Cleaning Kit with Many Accessories)

S.U.R. & R. FIC203 Fuel Injector Cleaning Kit
  • Versatile kit works on 80% of vehicles
  • 10-piece kit works on gasoline and diesel engine
  • Comes with a carrying case

7. Motion Pro 08-0594 

(Aerosol Spray Fuel Injector Cleaning Kit)

Motion Pro 08-0594 Fuel Injector Cleaning Kit
  • Small and lightweight kit
  • Works without a compressor
  • Solid & rugged aluminum construction

1. OTC 6550PRO – Professional Fuel Injector Cleaning Kit

OTC 6550PRO Professional Fuel Injector Cleaning Kit
  • Fittings: 47 pieces included
  • Included hoses: Yes
  • Pressure gauge: Yes

If you are looking for the best fuel injector cleaning kit you can get your hands on, then take a closer look here. OTC is the best name when it comes to fuel injector cleaning kits and they call this one the Professional's Master Kit.

It comes with most things you'll ever need to clean any type of automobile, especially gasoline-powered vehicles. There is a total of 47 different fittings for as many situations as possible and OTC additionally includes its application manual. You'll need to add a canister with a gauge though, to complete it.

This manual includes technical references for as many vehicles as possible, making it easier for you to get to work by knowing exactly what and what not to do. If you'ree looking for the best professional fuel injector cleaning kit, then this is most probably it.

The package also includes an analog gauge for setting the right pressure and for running different flow rate pressure tests. It comes with a lifetime warranty, but it doesn't come with a cleaning solution, so you'll need to buy your own cleaner. It's also not cheap.

Pros:

  • Comes with 47 different fittings for easy connections every time
  • Includes a 100-PSI pressure gauge for precise work
  • Comes with a detailed user manual
  • Backed by a lifetime warranty
  • Comes in a carrying case

Cons:

  • You'll need to buy the cleaning solution separately
  • It's not a cheap kit but it seems worth it

2. Mityvac MV5565 – Affordable Fuel Injector Cleaning Kit

Mityvac MV5565 Fuel Injector Cleaning Kit
  • Fittings: No adapters
  • Included hoses: 1 hose
  • Pressure gauge: Yes

Mityvac also offers a top-rated fuel injector cleaning kit here. It comes with a canister, a hose, a valve, and a wall mounting bracket.

This cleaning kit helps you to quickly and cleanly remove all fuel injector deposits, to dissolve, loosen, and get rid of all carbon deposits that hinder your car engine's performance.

The canister is 32 ounces Large, it's made from steel and die-cast aluminum for a long service life and it includes an easy to read gauge, an air nipple, plus inlet and outlet valves.

On the flip side, although the package includes a wall mount bracket, it does not include a carrying case and it comes with no fittings like the OTC offer above.

It also doesn't include a cleaning solution, but Mityvac backs the offer with a 1-year warranty on materials and workmanship.

Pros:

  • Works on most cars with low and high pressures
  • Made from durable steel and die-cast aluminum
  • Includes a valve for correct measurements
  • The package includes a user manual and a wall mount bracket

Cons:

  • The package does not include a carrying case
  • ​A stainless steel cannister would be better than aluminum

3. OTC Tools 7448A – Affordable Stainless Steel Injector Cleaning Kit

OTC Tools 7448A Fuel Injector Cleaning Kit
  • Fittings: None
  • Included hoses: 1 piece
  • Pressure gauge: 1 piece

OTC also offers a simple and easy to use fuel injector cleaning system that you can quickly use to clean up your car and get it back to top performance.

It does not come with a cleaning solvent anyway, but OTC makes a strong recommendation of the OTC 7000A which you'll have to buy separately. Another extra that you'll be needing is, of course, an air compressor.

This canister has a 22 oz. Capacity and it can handle air compressor pressures of up to 30,000 PSI. It's made from stainless steel and is strong enough to last you a long while. It also includes an analog pressure gauge.

Looking at disadvantages, the package includes no adapter, so you'll need to buy a set of adapters. Another disadvantage is the lack of a storage or carrying case for the kit.

The package, however, is still one of the best fuel injector cleaners and it includes a user manual to guide you on which adapters and air pressures that you need for different car types and models.

Pros:

  • It's designed for direct and quick cleaning of injection systems
  • Made from stainless steel for a long life
  • Includes a 22-oz large canister with a 30,000 PSI pressure tolerance
  • The package includes a manual for easy cleaning of vehicles

Cons:

  • The package includes just one adapter and no solvent
  • It offers no storage or carrying case

4. ​OTC Tools 7649A – Simple Fuel Injector Cleaning Kit with Accessories

OTC Tools 7649A Fuel Injector Cleaning Kit
  • Fittings: Yes
  • Included hoses: 1
  • Pressure gauge: Yes

The earlier OTC Tools cleaning kit, the 7448A came with no adapters, so you'll find it limited when you have to clean a range of different car makes.

This 7649A OTC fuel injector cleaning kit, therefore, includes some of the most common adapters, enabling you to easily adapt the canister to lots of domestic and imported vehicles, making it one of the best fuel injector cleaning kits in the market.

It includes several quick connect adapters, a spring lock coupling adapter, as well as a de-carbonizing adapter for manifold cleaning. You also get a blowout fitting attachment for cleaning the tool when done.

This offer's downside includes the relatively higher price and lack of cleaning solution or carrying case.

The canister is the same from the 7448A kit, made from stainless steel with a 22-oz capacity. It includes an analog gauge for precise outlet pressures and a wide throat for easier fluid transfers.

Pros:

  • Features OTC's 22-oz 7448A stainless steel canister
  • Includes an easy to read gauge and standard-compliant hose
  • Includes most common rail adapters to work on a variety of cars
  • Comes with an instruction manual for easier cleaning

Cons:

  • The package includes no cleaning solution or carrying case
  • It costs much more than the 7448A

5. OTC Stinger 4480 – Basic Fuel Injection Service Kit

OTC Stinger 4480 Basic Fuel Injection Service Kit
  • Fittings: Yes
  • Included hoses: Yes
  • Pressure gauge: Yes

Unlike OTC's master Kit above, this kit is strictly for running different tests on different vehicles, but it offers you no possibility of attaching a canister and turning it into a cleaning kit.

Still, it's a great kit for anyone who would like to get into fuel pressure service business or simply add the ability to his shop.

The stinger includes a dual-scale pressure gauge, a fuel discharge hose, adapters, and protective rubber feet, all packed into a blow-molded carrying case for your convenience.

This set is a great addition to your shop is you've already got a canister injector cleaner and an air compressor, else it is not of much use. It also doesn't work on all cars.

Pros:

  • Great for performing residual, running, rail and flow rate tests
  • Includes all the popular adapters to fit with many cars
  • Comes with a dual-scale professional gauge
  • The package comes in a carrying case

Cons:

  • It's not a cleaning kit
  • ​Doesn't work on all cars

6. S.U.R. & R. FIC203​Fuel Injector Cleaning Kit with Many Accessories

S.U.R. & R. FIC203 Fuel Injector Cleaning Kit
  • Fittings: Many
  • Included hoses: Many
  • Pressure gauge: Yes

Here's another contender for the best-pressurized fuel injector cleaning kit. It comes from S.U.R & R. and is a 10-piece kit with the most popular fittings necessary for cleaning up to 80% of domestic and import cars.

The canister has an 18-oz capacity and it works with both gasoline and diesel engines. Its transparent lines allow you to see and watch the fuel easily while the gauge is large and clearly marked for easy reading.

Downsides include its relatively high price and the lack of cleaning solvent.

This package arrives in a carrying case for your convenience, the canister includes a hook for hanging it on your hood, and it allows for an easy air compressor connection.

Pros:

  • 10-piece kit includes everything you need for quick cleaning-kit
  • Versatile system with fittings fits over 80% of vehicles
  • Canister holds up to 18-oz of cleaning fluid
  • For use with both gasoline and diesel engines

Cons:

  • Cleaning solvent is not included in the package
  • ​There are cheaper cleaning kits

7. ​Motion Pro 08-0594 Aerosol Spray Fuel Injector Cleaning Kit

Motion Pro 08-0594 Fuel Injector Cleaning Kit
  • Fittings: N/A
  • Included hoses: No
  • Pressure gauge: No

With this offer, Motion Pro tries to prove that the best fuel injector cleaning machine doesn't have to include a canister with a gauge and a connector for a compressor.

Motion Pro offers a revolutionary product here, which takes an entirely different approach to fuel injector cleaning kits design.

It uses an aerosol spray as input and needs a specific output for each vehicle or system it has to work on, so it's definitely not for those looking for the best pressurized fuel injector cleaning kit.

Asides from these limitations, it's a small and lightweight injector cleaner, plus it uses battery power, includes a LED indicator light, and an On/Off push button.

Pros:

  • It needs no compressed air to work
  • Easy to use with powerful cleaning effects
  • Solid aluminum construction for ruggedness
  • Comes with battery and includes an indicator light

Cons:

  • It needs a battery to work
  • It needs a non-included aerosol spray can to work

How to Buy the Best Fuel Injector Cleaning Kits

How to Buy the Best Fuel Injector Cleaning Kit

A fuel injector cleaning kit offers you a better chance of properly cleaning your car's fuel injection system than simply pouring cleaning fluid into your tank.

Since it's a more specialized tool, it's important that you understand the important aspects of a kit that'll either make it worth buying or not. These important aspects are as follows.

1. Fittings

The fittings are probably the most important aspect of any fuel injector cleaning kit because they're what makes the exchange of the cleaning fluid between the cleaning kit and the car possible.

Some kits will come with just a few fittings while others will come with nearly 50 fittings. Such fully loaded kits make it possible for you to work on just about any car, so you should check how versatile you want your kit and then decide on a kit size.

2. Brand & Price

Some brands like OTC are well-known when it comes to fuel injector cleaning kits and the good thing about buying from a popular brand is that you can trust the product's quality.

The disadvantage though is usually a higher price than competitor's products, so you have to decide on what you want: A higher priced brand product or a cheaper product from an unknown brand.

3. Hand Tools

Unlike simply pouring a cleaning solution into your car's tank to clean the fuel injector system, using a cleaning kit needs more work and it also demands the use of hand tools to loosen parts of the engine.

If you're a DIY guy and already have lots of hand tools in your shop, then you shouldn't have any problems. Else, you should first make sure that you've got enough hand tools to work on your car's injector system.

4. Air Compressor

This one also depends on how well stocked your shop is. You need a source of compressed air to get these kinds of fuel injector cleaning kits to work, and this usually means having an air compressor in the shop.

If you haven't got an air compressor then you'll need to arrange one because the injector cleaning won't work otherwise. It's the pressure from the compressor that pushes the cleaning solution everywhere you want it to go. The exception here is Motion Pros kit.

5. Cleaning fluid

This is another issue you'll have to consider as well. Does the fuel injector service kit come with a cleaning solution or do you have to buy it by yourself?

How to Use a Fuel Injector Cleaning Kit

How to Use a Fuel Injector Cleaning Kit

Unlike conventional fuel injector cleaners that you can just pour into your fuel tank, a fuel injector cleaning kit needs you to open your car's hood and do some work.

Don't worry though, because it's a simple and straightforward process, as you'll see from the step by step guide below:

First things First - What you'll need

You'll need the following items for a successful operation

  • The fuel injection cleaning kit
  • An air compressor
  • Hand tools
  • Safety glasses

Step 1: Locate the Connector

The connector is a spot inside your car's hood, on the fuel rail, to which you can connect your cleaning kit. This connector is, of course, different from car to car, so you'll need to find it and make sure the fittings that came with your cleaning kit fits it properly.

You won't connect the cleaning kit to it just yet. All you need to do is find it and make sure everything is okay and ready to go. Depending on your car, the connector could be a rubber hose or a threaded fitting.

Step 2: Warm up Your Car

Simply start your car's engine and let it run for a while. All you need is for the engine to reach its normal operating temperature, and you can easily see this from the car's temperature gauge.

Step 3: Prepare the Cleaning Solution

Your cleaning kit may or may not come with a cleaning solution. This is the time to mix it according to instructions and get it ready. Of course, you'll need to buy an injector cleaning solution if your kit lacks one.

Step 4: Turn off the Engine

Once the engine reaches its normal operating temperature, simply switch it off.

Step 5: Disable the Fuel Pump

After killing the engine, you'll need to disable the car's fuel pump. This is a very important step, so you shouldn't overlook it. You can either disconnect the fuel harness or remove its fuse from the fuse panel, just make sure it will not pump any fuel when the engine starts.

Step 6: Prepare and Mount the Cleaning Kit

Now is the time to fill your canister with the solution and to get it ready. Attach all necessary hoses and fittings according to the manufacturer's instructions and hang it from your hood if it's got a hook. Also, connect the kit to the connector you found in step 1.

Step 7: Add pressure

Once you've connected all other parts of the cleaning kit, it's then time to connect your compressor's air hose. Compressed air is important here because it creates the same amount of pressure that your car's injection system normally works with.

You may need to go through your car's manual to find the right pressure. What you need is that the pressure coming from the kit and into your engine's connector matches the pressure that your car's engine normally works with.

Step 8: Start the Engine

After matching the two pressures, start the car's engine and let it run for as long as necessary to empty the contents of the canister into the engine or as otherwise directed in your cleaning kit's manual.

Step 9: Kill the Engine

After the specified amount of time has elapsed, simply kill the engine and disconnect the cleaning kit.

Step 10: Remember the Fuel Pump

After disconnecting the cleaning kit and packing it away, you should remember to reconnect your car's fuel pump too. Your injectors should definitely be properly cleaned by now, so check to make sure that the dirty injector symptoms are gone and that's it.

Conclusion

In concluding this best fuel injector cleaning kits review, you have seen the offers in the market and the possibilities that they present.

You can either go for a lightweight cleaning system or for a full kit with all the possible adapters you could ever need.

You can also go for any of the offers between these two extremes. The important thing here is that you choose a cleaning kit that both gets the job done and additionally fits nicely into your shop.

Read More: 7 Best Brake Bleeder Kits

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