As you likely know, internal combustion engines that run on gasoline rely on spark plugs to initiate the ignition process. A high-voltage current is sent through the spark plugs, allowing them to ...

Few things disturb us more than the bewilderment of a broken bolt or seized pipe plug in a casting. You’re at a loss for how to get the darned thing out. This is when you have to slow down and come up ...

Spark plugs that haven't been changed for a long time can become one with the cylinder head. Fortunately, it's possible to repair damaged threads instead of scrapping the head. (Photograph by Chris ...