I am hoping that you all can lend some advice. I have an 04 TJ 2.4 Liter 4 Cyl. that I never really do any "real" Jeep stuff in. It is my around town car. When I hit the gas pedal, the engine starts to knock. It sounds as it something in loose or something. The more the gas, the more the knocking.
What should I be checking for?