I just picked up my dream truck. Its a 1982 datsun 720 102k orginal miles one owner. I tried starting it. Just cranked. I poped the hood and started looking at the carb. It is only held on by one nut. So im going tomorrow to get the other bolts. Do you guys think after i tightwn the carb firm itll run? i figured its just acausing a huge vaccum leak right now and maybe thats the issue? im new to carburators