I just bought this 90 zx NT and it has a bad squeel that sounds like a very loud belt noise when it RPMS around 2-3,000, i think it might me a pully or somthing, I put a ton of belt dressing on and nothing happened, I wanted to know if anyone had any ideas before I took it in. Thank you

 

Tighten up the alternator beltto the fan . This is your trouble with the ZX 100% sure