I have a 01 mustang gt 4.6 that I bought to resell. I had a lil bit of noise from the timing. I took It apart and found the guides were tore up. Trying to do a cheap quick fix I replaced them, everything looked good so I put it all back together. Still had a noise, tore it apart again notice a lil slack in the chain. I read that the tensioners are common to go bad on these motors. I bought new tensioners a and put them in, I spun the motor around a few times and there's still slack in the chain but it jumps from side to side as the motor turns. Just before I replace more then I need to or run into another problem I want to make sure what the problem is. Bad tensioners? Stretched chain? Or something else I'm not seeing. Thanks in advance for all comments and advice..