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.

Topics to Explore

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Can you sync your smartphone with your car?

Is it possible to talk to your car the way Michael Knight talked to KITT on "Knight Rider"? Perhaps so, if you learn how to sync your smartphone with your Trans Am.

How can you find the cheapest gas while driving?

Filling up the tank still hurts, especially while on a road trip. So how can you do it without breaking the bank?

5 Useful Voice-activated Commands for Your Car

If you've got the right gadgets, you can already use voice commands to control things like your GPS and phone from the driver's seat. How close are we to voice activation as an affordable car option -- and what we will we say when we have it?

What is the purpose of a tire sidewall?

The main purpose of a tire sidewall is to provide lateral stability. You can learn more about the functions of a tire sidewall by reading this article.

What type of induction system do turbocharged cars have?

Turbocharged cars have forced induction systems that compress the air entering the engine. Learn about the type of induction systems that turbocharged cars have in this article.

What are manual transmission synchronizers?

Manual transmission synchronizers are devices that eliminate the need for double clutching when changing gears. Learn how manual transmission synchronizers work in this article.

When you vulcanize a tire, what do you do to it?

Once a tire has all its components assembled, it’s still only a green tire, without any tread patterns or markings. You can learn more about a tire’s vulcanization process from this article.

What are the types of internal combustion engines?

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.

What are tire load ratings?

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

What are tire treads made out of?

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.

What are uniform tire quality grading standards?

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

What can you do to reduce your car's emissions?

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.

What do distributor caps and rotors do in ignition systems?

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.

What are some symptoms of ignition coil failure?

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

What size socket wrench do you need for an oil drain plug?

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.

Why do cars make noise when you shift gears poorly?

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.

How to Remove an Intake Manifold

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.

How to Remove Tree Sap From a Car

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.

How to Change Wiper Blades

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.

How to Identify a Transmission Fluid Leak

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.

10 Cold-weather Motorcycle Accessories

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.

What motorcycle accessories will help me stay cool?

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.

Is all motorcycle apparel made of leather?

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.

How to Diagnose Power Steering Problems

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.

How to Rebuild a Carburetor

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