Small internal combustion engines usually keep things simple, relying on carburetors to handle metering the correct amount of fuel and air. Recently, [Carlos Takeshita] decided his small engine could ...

Harley-Davidson is a brand deeply tied to tradition, from its distinctive rumble to hands-on garage tuning. Carbureted engines were a part of that rugged image for decades. Owners loved tinkering with ...

Port fuel injection has some big advantages, but automakers increasingly are using gasoline direct injection instead. The ...

If you think direct-injection diesel engines made their debut in the 1980's, think again. The first diesel without extra ...

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 ...

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 ...