Manufacturers have been doing their best to give gas-powered lawnmowers a run for their money with increasingly powerful and long-lasting cordless models. If you’re in the market for a new mower, ...

Start by searching for a small cylindrical metal object sticking out of the engine. Chances are it’ll be on one side. This is the spark plug. Look for a fairly thick wire at the end of the spark plug.

There's something oddly satisfying about pulling an old spark plug out of an engine, but what do you do with the plug once it's out? Maybe you're having second thoughts about changing the spark plug ...