Spark plugs are an integral part of your engine, but they need to be replaced every so often. We'll tell you how to find out ...

Spark plugs may be small, but they play a huge role in your car’s performance, fuel efficiency, and reliability. Knowing how they work, how to spot wear, and how to choose the right type can save you ...

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" ...

For most cars and trucks, gasoline and diesel engines follow the same four basic steps to make power: intake, to get a mixture of fuel and air into the cylinders; compression, to squeeze that mixture ...

Spark plugs can get wet in a lot of ways. That's not to say it happens all the time, especially in newer engines, but it does happen. And when the plug is soaked, it's not going to fire. That's true ...