How Well Do You Know Your Car Parts? Take the Quiz!
Not the kind of cap you wear on your head—what's this cap for?
Correct Incorrect If your engine were an outfit, the distributor cap would be the perfect belt and shoes that pull it all together. It’s responsible for sparking the right moment when the engine gases are at their most compressed, helping the engine run smoothly. When it fails, you might notice a rough idle or trouble starting your car.