Whether it makes your car sound like a swarm of angry bees or the deep rumble of an earthquake, your car's exhaust system is doing its job every time you turn the key. See more »

A car engine produces so much heat that there is an entire system in your car designed to cool the engine down to its ideal temperature and keep it there. But cooling systems serve other purposes too.  See more »

Just seeing the phrase "positive crankcase ventilation" probably makes your head hurt, because it sounds, well, complicated. But it really isn't all that complex. See more »

Timing lights come in a few different shapes and sizes, and range in features from bare-bones functionality to lots of bells and whistles. Do you know how a timing light works? See more »

As if the price of gasoline isn't bad enough: Did you know that the fuel in your car's gas tank is slowly evaporating away? Even when parked? See more »

Has your fuel gauge ever read "empty" when you know there are gallons left in your auto's tank? Learn all about how fuel gauges work and how to know when "Empty" means "No seriously get gas." See more »

As engines and their electronics become more complex, spark plugs remain accessible and easy to understand. It doesn't take long to figure out the inner workings of a spark plug. See more »

We can already use biological markers to identify people, but within the next decade, similar technology is coming to our cars, too. Will this be yet another distraction for drivers? See more »

Wires fuses and connectors are the kind of thing in your car that you never think about, but they are essential. They're not just there to keep your radio and lights working! Learn why they are so important. See more »

A tremendous amount of force is applied to your car's crankshaft while you're driving. The result is lots of crankshaft vibration. How does a harmonic balancer solve the problem? See more »