To save time and money, you might want to learn how to clean fuel injectors without needing to rely on professionals. But do ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

It promised better power, reliability, and fuel economy. Sadly, though, virtually none of those promises were delivered.

GM has filed a patent application a variable displacement valvetrain system with rocker shaft porting and insert sleeves for ...