Well if you removed the main drive belt and all the accessories were not spinning.
That leaves the timing belt or the tensioner.
Could be the belt needs to seat in, though it shouldn’t take long for that.
Might also be the belt is too tight or there might be an issue with the tensioner.
Another possibility, the timing belt just may not be the correct fit your your vehicle.
Not uncommon for after market parts not fitting as well as OEM parts
- This reply was modified 1 month ago by Richard Kirshy.