I installed a n/a motor a while back and since then it has been running very rich. soon as I start it up I smell gas and I don't see any leaks and car runs perfect no misfire or anything. It has a used fuel pump. I haven't checked fuel pressure yet. Also on my wiring harness side the passenger side o2 connector was ripped off so I wired in a new connector but I don't know if I wired it correct. I am thinking maybe that is the problem? Anyone have a diagram for the color wires and what wires it goes to on the passenger side connector? Also is there a way to check the fuel pressure regulator and the fuel damper? Could those cause The car to run rich and is so how can I test them. Any help would be great thanks
Follow Ups
Running very rich possible o2 problem? - FL300zx 07:51:20 12/30/15