The other day I dropped my car off at a European specialist shop, and while I was there, a technician was working in the engine bay of a Mk7 Golf R, cleaning out carbon deposits off the intake valves.

Fuel injectors rarely get the same attention as turbochargers, superchargers, or cylinder heads, but they play a far more critical role than most enthusiasts realize. Every fuel-injected engine, ...

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 ...

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 ...

You’re walking down the aisle of your local auto-parts store and you happen to notice the shelf full of fuel-system cleaners. They might be nestled between oil additives and those bottles of goo ...

Browse the most recommended diesel injector cleaners to maintain your car's engine and performance ...

DEPOSITS do build up on injectors in time, making the engine run rough and causing loss of power. Some dealers recommend cleaning them as a precaution, but I would be reluctant unless the engine is ...

There are only three things guaranteed in life: death, taxes, and traditionalists intimidated by radical new techno-gizmos that alter how things have been done since "the good old days." When it comes ...