Easily diagnose engine ignition issues with our Inline Spark Plug Tester. This Straight Boot Engine Ignition Tester is designed for small engines, making it the perfect Ignition Coil Tester for ...

A battery in a traditional car cannot directly create engine spark. It’s only rated at 12 volts, after all, so it needs a little help boosting the signal to the spark plugs. To make that happen, a car ...

It's springtime! Time to start working on your project car, learn a new wrenching skill, discover what everything is under the hood (and how it works), or just spruce up your daily driver. All month, ...