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.

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Explore the reasons behind white smoke from exhaust. Learn about issues, fixes, and expert insights for vehicle health.

By HowStuffWorks

Learn about coolant leak causes and solutions. Expert insights for identifying, diagnosing, and fixing coolant leaks.

By HowStuffWorks & Talon Homer

Explore power steering fluid leak causes and solutions. Expert insights on detecting, diagnosing, and repairing leaks.

By Sascha Bos

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Picture this: you’re heading out for an important meeting, and you’re left wondering, “why won’t my car start?” Frustrating, isn’t it? Before you call the mechanic or tow truck, let’s explore some common causes of this problem and how to resolve them. In this blog post, we’ll discuss everything from dead batteries to faulty ignition switches and even unique challenges faced by modern vehicles, all related to the question, “why won’t my car start?”

By HowStuffWorks

Discover bad fuel pump symptoms and expert insights. Learn to identify, diagnose, and address issues for optimal performance.

By HowStuffWorks

Explore transmission fluid leak causes and solutions. Expert insights on identifying, diagnosing, and fixing leaks.

By HowStuffWorks

Explore radiator leak causes and solutions. Expert insights on identifying, diagnosing, and fixing radiator leaks.

By HowStuffWorks

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Discover brake fluid leak causes and solutions. Expert insights on identifying, diagnosing, and fixing brake fluid leaks.

By HowStuffWorks

Explore the contrasts between bad alternator and bad battery. Learn to identify, diagnose, and address issues for optimal performance.

By HowStuffWorks

Identify and tackle bad oxygen sensor symptoms for optimal vehicle performance. Expert insights on diagnosis and solutions.

By HowStuffWorks

The ignition system brings your car’s engine and subsystems together. Learn about the parts of your ignition system and innovations in ignition systems.

By Karim Nice

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If your car persistently pulls you to the side of the road, it may be trying to tell you something. Relax. This simple service shouldn't cost you that much.

By Jacob Silverman

Car wheels spin at different speeds, especially when they're turning. So how does the differential help make them turn with such ease?

By Karim Nice & Talon Homer

How many wheels are in the world is a hotly debated question swirling around the internet. But it's not that easy to answer.

By Cherise Threewitt

How often should you change your oil? If you think it's every 3,000 miles, think again.

By Cherise Threewitt

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Your car's ignition coil supplies the engine with the high voltages needed to get the car running. But how do you know if the ignition coil is malfunctioning?

By Talon Homer

When license plates were first introduced in the U.S. in 1901, you had to make your own. Nowadays, prisoners make them for you. Yes, it's true. Find out more about this and other strange facts about license plates.

By Talon Homer

Your car's serpentine belt is a single, continuous belt that drives lots of things like the car's alternator and power steering pump. So how do you replace it when it's starting to fail?

By Kristen Hall-Geisler

Sales of stick shifts are down around the world and even some sports car manufacturers have stopped making them. Still, many zealous auto enthusiasts are doing all they can to keep the old three-pedal motion alive.

By Talon Homer

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If your car is built like a supersonic plane, you can sure reach blazing fast speeds. But what about a car you can actually buy?

By Talon Homer

Frunks, usually reserved for VW Beetles and classic European sports cars, are moving into the mainstream, as trunks take a front seat.

By Cherise Threewitt

Ever notice you see more tire debris on the side of the road during the hottest months of the summer? Could the heat have anything to do with it?

By Alia Hoyt

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Even if you're not a car enthusiast, you might still want to consider one of these modifications to make your ride the best on the block.

By Cherise Threewitt

You might think your car is fine for your upcoming summer road trip. But if it's more than 10 years old, you might want to think again.

By Cherise Threewitt