One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

Last week, while I was brushing my teeth before bed, my phone flashed up with a voice note sent by a close friend. "Rachel!" my friend yelled down the phone with some urgency. "The days of the dick ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...