All of it. The 10 percent figure you occasionally see is nonsense that a lot of people believe just because they've seen it so much.
Quick Answer. Some things that cause a vehicle's front end to make a clunking noise are worn ball joints, a damaged tie rod, broken or loose sway-bar links, hard or damaged shocks, and faulty shock mounts. An automotive professional can inspect the vehicle's front end to locate the source of the clunk. Continue Reading.
If your shocks and struts are bad, however, when you hit the gas pedal, the momentum of the vehicle will be transferred to the rear end, which will cause the front end to rise slightly into the air and resemble a boat on the water. 5) Visible damage including dents, cuts or leaks.