Ok so I own a B16 in a 4 door... and my car when its at idle the car will go from like 500 rpms to 750 rpms and just keep doing it... and when im rolling the car will sputter... but if you get on it it goes with out any problems... I know I need to get the vavles adjusted but I donno if thats the problem... thanks for the help

 

start by adjusting your valves....a very far out valve adjustment will cause rough idling. after that, then pull your iacv and fitv ( if equipped ) and clean them. if you have a fitv remove the cover and screw the white plastic peice all the way down. if neither of those fix your problem then start searching for vacuum leaks.

 

^^agreed^^ except Id probaly check the iacv first and the search for vacuum leaks second....if you havent adjusted the valves in a while then its probaly time anyways