Figure 2: Metal spark plug. Source: Pixabay The gap between these two electrodes is where the magic happens. When the voltage becomes sufficiently high, a spark jumps across the gap from the central ...

This guide will focus on small engines in tools like lawn mowers ... Refer to your machine’s owner’s manual to find out what the spark plug gap should be, then use a spark plug gap tool to measure ...

Here's what you'll need: A new spark plug matching the old one A spark plug wrench, or socket ratchet A spark plug gap gauge or gap tool Your mower might have come with a spark plug wrench, usually a ...

A recent Reddit conversation in r/MechanicAdvice helped one Jeep owner conclude that a set of counterfeit plugs likely bent a ...