I have a ford galaxy 2001 tdi changed belt tensioner water pump pickup cam senor , My problem is wineing as if the belt is to tight , i have the correct gap on the pressure piston ,But the belt is very tight could it be a bad water pump or am i setting it wrong , I set the pulley all the way back put locking tool to hold piston turn wheel anti clock and slowly release to set gap ,lock nut , set it up three times still winning help please.