Those wound-up pieces of high-tensile steel under your rocker arms work so hard closing your valves over millions of cycles that they could probably use a replacement right about now. We're talking ...

Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...

For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...

It's official. Toyota's Lexus luxury brand is conducting a voluntary recall of 138,000 vehicles. The recall, to replace faulty valve springs, affects the following models: The valve springs will be ...

They don't get as much attention as high-tech, advanced driver assistance systems (ADAS), but many people actually consider tires to be the most important safety feature on your car. After all, those ...

A small gap with big importance in the performance and health of an engine - here's everything you need to know.