Under the Hood

The Under the Hood Channel explores the systems that make your car function correctly. Learn about car parts and systems and how to do routine maintenance.

Car engines that run on gasoline aren't the only kind of internal combustion engines. Learn about the types of internal combustion engines in this article.

Tires do have their limits when it comes to weight capacity. Learn about tire load ratings from this article.

In general, tire treads are an amalgamation of several different rubbers, both synthetic and natural. You can learn more about tire treads from this article.

Tires are graded with a series of numbers and letters. Learn about uniform tire-quality grading standards in this article.

To reduce your cars emissions, you can help its catalytic converter work more efficiently by preheating it, or you can inject a urea solution into your exhaust pipe. Learn what you can do to reduce your car's emissions in this article.

Distributor caps and rotors help transfer the spark from the coil to the cylinder. Learn how distributor caps and rotors function in ignition systems in this article.

Ignition coils are responsible for passing electricity on to your spark plugs. Learn about the symptoms of ignition coil failure in this article.

Before embarking on a project like replacing your car’s engine oil, you need to decide which size socket wrench you should use. Learn more about what size socket wrench you need for an oil drain plug from this article.

The noise you hear is not from gears grinding against each other, it's from the dog teeth on the gears. Learn why cars make noise when you shift gears poorly in this article.

Do you have to remove your intake manifold because your internal combustion engine isn't getting enough airflow? Learn about how to remove your car's intake manifold in this article.

Every time you park your car under a tree you find tree sap on the hood, and you'd like to learn how to remove it. In this article we will give you a few solutions about how to remove tree sap from your car.

You'd like change your car's windshield wiper blades, but you're not sure how. We will now give you instructions on how to change wiper blades.

You find liquid leaking from your car and are at a loss about what to do. Learn about how to identify a transmission fluid leak in this article.

There's no reason you can't enjoy riding a motorcycle all year long. Prepare for the special challenges of winter with the right equipment and clothing.

To ride safely when it's hot, you have to dress to protect yourself against hyperthermia, drink plenty of liquids and stop to rest in the shade.

Today's motorcycle apparel can be made of leather or modern synthetics. Both provide abrasion resistance in case of a crash, but leather will give you the best protection.

You're driving out of a parking lot when you suddenly feel that you're having problems with the power steering. Learn about how to diagnose power steering problems in this article.

Rebuilding a carburetor is easier than it sounds and cheaper than paying a mechanic. Learn about how to rebuild a carburetor in this article.

With hundreds of hours and thousands of dollars, you can restore a real classic car. The crux can be finding the parts to make it look like a full-scale version of a plastic hobby model. So where can you find the right parts?

Your car has been acting up lately and you're wondering if you have a blown head gasket on your engine. Learn how to tell if you have a blown head gasket from this article.

Refurbishing a classic car is a labor of love, and with muscle cars, the emphasis isn't just on power; it's also on design. So, where can you track down those classic decals that are so popular with muscle car collectors?

Somewhere -- maybe down the street or maybe on the other side of the world -- is the part you need for your classic car restoration. So where can you look to find that last specific part you need to complete your project?

Would you like to find out how to set up new car speakers so you can upgrade the sound system in your car? This article will tell you how to set up car speakers.

The radiator of your car is composed of tubes that carry the coolant fluid, a protective cap that’s actually a pressure valve, and a tank on each side to catch the coolant overflow. Learn more about how a radiator cap works from this article.

The job of a car’s cooling system is to release the surplus heat from the engine as the car burns fuel. Learn more about how an engine cooling system works from this article.