Updated at: 20-03-2022 - By: micdot

This article contains affiliate links. Using any of the links on this page will allow me to earn a small commission at no additional cost to you. Cleaning your automobile thoroughly is something you should do at least once a year. The engine compartment and fuel injectors can both be cleaned in this manner. The injectors may be cleaned without having to remove them. We’ll show you how to clean fuel injectors without removing them in this article.

Having blocked injectors might reduce your car’s performance because it prevents fuel from entering the engine properly. Cleaning your fuel injectors is an essential part of keeping your engine running smoothly and ensuring that it performs at its best.

Why Should You Clean Fuel Injectors?

A well-functioning engine relies heavily on the performance of its fuel injectors. Loss of acceleration and a noticeable decline in your vehicle’s performance may be signs that your fuel injector is clogged. After 30,000 miles, it’s a good idea to get your car’s fuel injectors cleaned, especially if it’s not performing as well as it used to.

Additionally, cleaning your car’s fuel injectors improves fuel efficiency and enhances its overall performance.

How To Clean Fuel Injectors Without Removal

To begin, you’ll need a fuel injector cleaning kit. There are a variety of them out there, and you’ll need to choose the one that’s ideal for your car’s engine. When cleaning your car’s fuel injectors, make sure to consult the manual for any instructions or tools that the manufacturer advises. Make sure your engine cleaning kit is compatible with your vehicle before proceeding.


Purchase the fuel injector cleaner kit that is recommended for your car. Also, don’t forget to get some PEA cleaning fluid. Fuel injector cleaning kits commonly include canisters and hoses for attaching to the injector and fuel rail. Look for a cleaner that contains Polyetheramine (PEA) – this component dissolves thick carbon deposits more rapidly and effectively than any other ingredient, ensuring greater results. You don’t need to worry about what type of fuel injector cleaner you should use if your car didn’t tell you what kind to use. If you’re not sure if the kit is appropriate for your vehicle, check with the vendor or read the manual that came with it before purchasing it. You can either get a complete kit or just the cleaning fluid and then buy the rest of the supplies you’ll need to clean your fuel injectors.

In addition to this, polyisobutene (PIB)-based cleaning fluids simply prevent new deposits from forming, while polyisobutylene amine (PIBA)-based cleaning fluids remove deposits and prevent new ones from forming. Although PIB and PIBA aren’t nearly as effective as PEA, you should still stick with PEA cleaning fluids.

Step 1: Drive the car into the garage

The car should be driven into a garage or a place where you can be comfortable while you clean the injectors. Identifying the placement of your fuel injectors requires familiarizing yourself with the engine layout of your specific vehicle. Fuel injector locations can be found in your vehicle’s owner’s handbook or by searching online. Under the hood of a car, the fuel injectors are often located.

Step 2: Buy a fuel cleaning system

Purchase a fuel cleaning system called “Run-Rite.” Cleaning fluid may be passed through the fuel injectors without removing any components thanks to this device. The Run-Rite tool can be used as follows:

Clean the injectors by removing the cap and adding injector cleaning solution. Fill the Run-Rite gadget to the brim with fluid. Now, attach the other end of the Run-Rite tool to your car’s fuel rails (screw it onto the fuel injection rail).

Step 3: Locate the fuse box

Disconnect the fuel pump relay from the fuse box. By doing this, the fuel pump will be shut off and no fuel will be delivered to your vehicle while it is being cleaned. If you follow the instructions carefully, your engine will not be damaged.

Step 4: Connect air supply host to power

The tool can be powered by connecting it to the air supply host. Finally, turn on the gauge and lower the system pressure by 5 pounds, making sure it’s not too low.

Step 5: Start the vehicle

Start the car and get in. After a while, your automobile would begin to operate and you would know that the cleaner had completed its task. After a while, you’d notice that the fluid had been drained from your injection rail and that air had begun to enter; this is when your car would come to a halt.

How To Clean Diesel Injectors Without Removal

Because diesel is often used as a synonym for fuel, the steps to clean diesel injectors without removal are the same as those described above. To help you get started, here are some suggested books:

Do You Know When Your Injectors Are Clogged Up?

What Is The Best Car Wax For Scratches On Black Cars?

When a Torque Converter fails, what’s the root cause?

It’s important to know how many miles a new car should have. Is it Possible to Purchase a Car with No Mileage?


The approach outlined above is the only way to clean your fuel injector system without having to remove it from the vehicle. ‘ Disconnecting the pump and pouring the cleaning fluid manually into the injectors is an alternative method. Fuel injectors may be cleaned without having to remove them from the engine. If this seems too complicated for you, don’t do it yourself; get a mechanic or an auto professional to do it for you. Cleanup of the fuel injectors takes no more than ten minutes.