For hot rodders, spark plugs are often nothing more than inspection tools that reveal whether an engine is running too rich, too lean, or just right. Street guys look for a nice tannish-brown tint on ...

Bruce Springsteen said it best when he said, "You can't start a fire without a spark." While spark plugs may not be number one on your conversation hit parade, there is a whole raft of new, "designer" ...

Spark plugs are necessary for gas-powered engines. However, they're not all the same, and they can come in different shapes ...

Smart plugs can add controls to any outlet, but they aren’t perfect for everything. Here’s our guide to using one and which ...