7 Best Fuel Injector Cleaners

Published: April 5, 2022
Last updated: October 26, 2023

Fuel injection is an integral part of every modern vehicle. An injector is responsible for spraying gasoline into a cylinder of an engine to initiate combustion. The fuel injectors can, however, become clogged with debris over time.

Injectors may malfunction when gas contains contaminants such as carbon particles, dirt, and additives. These contaminants can damage the injectors. If your fuel injectors were dirty and sprayed fuel in irregular patterns, your gas performance and mileage would suffer. The pipes can eventually become clogged to the point where your car won't start or run.

Moreover, when dealing with fuel injector issues, it's essential to consider the health of your engine. A well-functioning fuel injection pump is crucial for maintaining the proper fuel delivery to the injectors. If you're experiencing severe fuel injector problems, it might be worthwhile to assess the condition of your fuel injection pump, ensuring the entire fuel system functions optimally.

You can replace a bad fuel injector or use a good fuel injector cleaner when your fuel injector starts to go bad. Whenever there is a problem with a car, most people will begin by seeking the cheapest and easiest solution. The fuel system cleaner would be an easy and inexpensive solution in this case. 

Top Seven Fuel Injector Cleaners

We have listed seven of the best fuel injector cleaner products.

1. Lucas Fuel Treatment

Lucas LUC10013 is one of the best fuel injector cleaners and conditioners. Clean and lubricated fuel injection systems result in greater power and gas mileage and a higher probability of passing emissions tests.

As much as 400 gallons of fuel can be treated by a 1-gallon jug, whether the fuel is diesel or gasoline and whether it is leaded or unleaded. Fuel System Cleaner by Lucas is one of the best products available today.

2. Sea Foam SF-16 Motor Treatment

Sea Foam has a large fan base among auto enthusiasts who consider it to be the best fuel injector cleaner. When added to the fuel tank, it does more than clean injectors. It lubricates and cleans the entire fuel system. You can even use it to stabilize fuel or improve the flow of crankcase oil by removing deposits and residue. It is designed to treat fuel up to 16 gallons in a 16-ounce bottle. While Sea Foam works great, it is slightly more expensive than Lucas.

3. BG 44K Fuel System Cleaner

Despite its slightly higher price tag, this cleaner will eliminate deposits, residue, and even some rust from your fuel injectors. You can also thoroughly clean your combustion chambers and valves with this best fuel injector cleaner product.

BG 44K comes in 11-ounce containers and can treat up to 20 gallons of fuel. BG 445 Platinum is a well-known name among auto enthusiasts despite being unavailable at most local or online auto parts stores. BG 445 Platinum has earned an excellent reputation regarding professional use products.

4. Liqui Moly Jectron Fuel Injection Cleaner

Sea Foam and Liqui Moly are both well known to German car enthusiasts. This German-made best fuel injector cleaner product cleans injectors and keeps intake valves free of deposits, allowing for a smoother idle, more power, and improved gas mileage.

Known for improving throttle response, fixing rough idles, increasing fuel economy, curing misfires, and even clearing diagnostic trouble codes related to emissions. The price of Liqui Moly Jectron is a bit higher than some, but usually one treatment is enough.

5. Chevron Techron Concentrate Plus Fuel System Cleaner

You can find Chevron fuel system cleaners all over the world. Techron technology is a patented additive that boosts the performance of an engine. The acceleration and power of your engine will be restored to their original levels and your MPG.

In addition to E85 and other flex fuels, Techron Concentrate Plus by Chevron is safe for all ethanol fuels. In terms of troubleshooting various fuel and emissions system problems, it's a great first step for the price.

6. Red Line Complete SI-1 Fuel System Cleaner

It's considered one of the best fuel injector cleaners (mainly because a well-regarded company makes it). This cleaner is one of the most expensive, but it contains polyether amines, which increase its cleaning capability to the maximum.

In other words, one 15 ounce bottle will clean your vehicle's fuel injection system completely. The SI-1 system also contains synthetic cylinder lubricants, which enhance combustion chamber and valve performance.

7. Royal Purple Max Atomizer Fuel Injector Cleaner

Fuel injector cleaners, such as Royal Purple, have been used for a long time. Engines perform stronger due to their cleaner formula that continually improves their ability to remove carbon.

You will likely notice increased power, gas mileage, and smoother idling after 1-2 applications if your fuel injectors are particularly clogged. Royal Purple Max Atomizer is entirely safe for diesel and gasoline engines, unlike others.

How Often to Use a Fuel Injector Cleaner

The majority of fuel injector manufacturers recommend cleaning fuel injectors every 3000 to 5000 miles. It's generally ok to go twice a year for maintenance if you're only there for routine maintenance. Since more fuel gets sprayed through the injectors when "Spirited" drivers drive, they will likely have cleaner injectors and engines. In many cases, this is sufficient to remove some deposits. When it comes to maintaining your car's fuel system, consider upgrading to high-quality fuel injectors from FuelTech.

Contrary to that, people who commute on long highways or rarely press the gas pedal often experience more fuel system blockages.

Are you interested in learning more about cars and their maintenance? Head over to the KeepDriving website and check out our blog post on the most common symptoms of a bad EGR valve.

Founder, Editor-in-Chief Carmelo Pickel is the Founder and Editor-in-Chief of Keep Driving, with almost 20 years of experience working in the industry. Before founding Keep Driving, Carmelo held leadership roles for over a decade on top automotive dealership corporations across North America, handling various leadership roles in Sales, Marketing, and Incentives.
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