Fuel injectors don't just deliver fuel. They meter it, shaping the spray so the air-fuel mixture burns in the way the engine wants it to. When deposits build up, injector fuel flow can decrease and ...

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. In many cases, just using a quality ...

Having fuel injectors on all mass-produced vehicles is one of the biggest automotive breakthroughs of the past few decades. If you've ever gone through having to start an engine with a poorly tuned ...

Having fuel injectors on all mass-produced vehicles is one of the biggest automotive breakthroughs of the past few decades. If you've ever gone through having to start an engine with a poorly tuned ...

Clean and lubricate your vehicle's fuel system with our top picks for the best diesel injector cleaners. Like any fuel-injected engine, diesel engines rely on fuel injectors to, well, inject fuel into ...

Shutterstock // Setta Sornnoi Over time and miles, your car might start to slow down. It might not accelerate as quick ...

We've tested a bunch of pour-in fuel additives in Fact or Fiction over the years. Can you really blame us? With all their promises of horsepower and torque increases, detonation resistance, and ...

Car problems are a regular occurrence for drivers. Something can go wrong with the plugs, tire alignment could be off, or you haven’t changed your engine coolant in a while, and now performance is ...

We may receive a commission on purchases made from links. Dirty fuel injectors can cause many problems, from minor annoyances like a rough idle or lower gas mileage, to more immediate and pressing ...