if you have a crack in your neck once in a while it's ok to crack it like with anything, but repeatedly & obsessively cracking your neck is not good for you as the 'crack' noise you hear is actually air bubbles popping away at your bones & can permanently damage them.
not interchangeable, and yes, it most likely is the source of the noise (and dewpending on the size of the crack, loss of horsepower
no
crack
The lubricant in your joints creates bubbles our of gases. When you joints move the bubbles pops. That is the noise you hear. Also, something the tendons are a little ruff and make noise as you move the joint.
Butt Crack -_-
Bones do not bend directly, they bend at the joints (points at which two bones meet).
When you crack your back, the sound is typically caused by small pockets of air being released from the joints. When you move in a way that puts pressure on the joint, these pockets of air can be quickly released, creating the popping sound.
it can cause excessive noise and excessive heat to electrical lines under the hood. It is also a place for CO gases to build up and find a way into the drivers compartment. Yes, a lot. In the exhaust manifold anyway. In the intake manifold it wouldn't run.
The bones in your body don't actually crack when you move. The sound you hear is actually the sound of the gases in the synovial fluid escaping the sac around the joint.
Shouldn't
because you touch it.