The difference between hot and cold spark plugs lies in their ceramic insulation. Learn how hot and cold plugs are different in ignition systems in this article. See more »

The ignition coil passes its power to the cylinders through a distributor. Learn how to wire an ignition coil to a distributor in this article. See more »

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. See more »

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. See more »

How does the thermostat in a car's cooling system work? I had to test my thermostat today and was amazed as I watched it! See more »

You may need to learn how to gap a spark plug if you get a new one for your car's engine. Learn how to gap a spark plug in this article. See more »

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

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. See more »

The battery light on my car dashboard comes on whenever I am driving. How serious is this? The car seems to be working fine... See more »

What is the difference between a normal lead-acid car battery and a "deep cycle" battery? I have a trolling motor on my boat and I don't see why I can't use my car's battery with it rather than spending another $80 on a deep cycle battery. See more »