2004 Hyundai Sonata timing belt

I replaced the timing belt, I alligned all the marks put new timing belt water pump and belt pulley idler
pulley and now I hear noise. I took the cover out and I found that there was rubber around the
tensioner pulley I took out put another one that I see again rubber come off the timing belt and around
the tensioner pulley, I hear like noise can it be the new tensioner faulty or the new timing belt is faulty?
for making noise. I am thinking about putting another belt. Can the new parts be faulty?
there was rubber from the belt on the idler pulley but not alot more on the tensioner pulley