Q: I have a heavy-duty circular saw, and the plug on the end of the cord got smashed during a move. My mother has a lamp with a damaged plug, too. I don’t use the saw much, so I don’t want to dump too ...

Spark plugs are essential to the running of a vehicle, helping ignite the mixture of air and fuel to provide combustion to the engine. There are three specific parts of a spark plug, a central ...