weird creek or clang sound

Check your brake pads, mine did the same thing except it was coming from the rear. I took the rear brake pads off and found out that the pads were completely worn down and it was metal on metal contact. It happened whenever I would roll backwards.
 
maximos said:
Check your brake pads, mine did the same thing except it was coming from the rear. I took the rear brake pads off and found out that the pads were completely worn down and it was metal on metal contact. It happened whenever I would roll backwards.

it sounds almost like exhaust banging somewhere on the body but the exhaust seems tight and clear of any obstruction