Your engine feels calm at a stoplight because a hidden idle system keeps fuel, air, and spark in balance. That quiet ...

I would like your advice on how to adjust the idle speed of my 1998 Nissan Patrol diesel turbo. The recommended idle speed for 4x4 is 650, but mine is at 800. The engine has a drive-by-wire throttle ...

"Hey, how tough can it be? Just turn the screw and you're done, right?" There's a lot more to learn about setting idle mixture than just turning a couple of screws and slamming the hood closed. You ...