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 ...

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 ...

Gas-powered internal combustion engines need spark plugs to (literally) ignite and complete the combustion stroke, enabling the motor to produce power. They may seem unusual to the untrained eye, but ...

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 ...