Don’t worry, it’s not just you. Everyone dropped their first, or likely fortieth, F-bomb when their dad had them hold the spark plug while he hit the kickstarter on their dirt bike. While it might ...

View post: REI Has a 'Comfortable' Rain Jacket on Sale for Almost 50% Off This spark plug tester features an innovative dual-socket design, allowing you to test two spark plugs simultaneously. By ...

An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system for ...