Fuel injector cleaners remove dirt and residue to improve engine performance and efficiency. Learn how they work and choose the best one for your car.

With auto part stores advising you to use a fuel injector cleaner, you may think it's the wise thing to do. However, is it actually worth the time and money?

While fuel-injector cleaning is often recommended by shops and dealer service centers, it probably isn’t necessary unless it’s correcting a running problem.

We followed the simple, but necessary process, using a diesel fuel injector cleaning tool available from Justice Brothers. The tool actually takes the place of the fuel tank.

OTC has expanded its North American product line-up with the introduction of four fuel injector and fuel pump tools designed to help technicians complete fuel system jobs more efficiently.

The cleaning tool hooks up to the injector fuel rail and a high-pressure solvent passes through the injectors and runs the engine. When the cleaning procedure is complete, the injectors are retested.

HOT ROD Top Pick: Berryman Intake Valve & Combustion Chamber Cleaner and B-12 Chemtool Total Fuel System Clean-Up We explain why all gasoline engines, especially direct-injected engines, benefit ...

Professional fuel-injector service (cleaning, calibration and/or repair) should be done every 300 engine-run-time hours or every three to four years. Szczerbala says that not all injectors are created ...

Looking for a fuel injector cleaner? Our team narrowed down the best fuel injector cleaners on the market. Read this review and save yourself time and money.