Hi guys! I am from Russia, so first of all sorry for my english

I need your help. I own Isuzu Rodeo 2002 2,2l y22se and I bought it with very strange noise coming from the engine. First of all I changed water pump, timing belt with all rollers, exhaust manifold, cylinder head, clutch, checked inlet manifold but noise didn't change. I spent a lot of money, and I am very upset. Even car service guys have no idea about my problem. So the only hope for me is you. I have a video with this freaking noise on youtube.