Most people think you can check a small engine’s ignition system by removing the spark plug and grounding it while cranking ...

With this easy to make tester, observing the spark output on an engine will not require a costly special tool. The parts needed for this are common items that most boaters may already have in their ...

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.