I know this prolly isn't the right place to ask this but I really need help, I went to look at a 91 Mustang Gt, when I got there someone else had taken it out for a drive, they stopped at a gas station and got gas, got in the car to start it and when they turned the key over the car started pulling forward while it was being cranked, would make sense if it was a standard, but, it's an automatic tranny, they finally messed with the gearshift enough that they could crank the car without it rolling but it would not start, they think it may have somehow broke the timming chain as well, so my question is, What could cause this??????????????????????? Thanks alot if any one knows what happened because I've never seen this happen.