ca18detizzle wrote:I don't get it. I checked for codes. Nothing. When I jump on it from 3k rpm car bogs and won't go past. This only happens when I have about alittle more then 1/4 tank. I wired to knock sensor up an all, checked for vacuum. Everything seems fine. Any ideas?
btw, ca18det 240sx.stock w/ walbro 255lph pumpFMIC
Could it be the fuel pressure reg?
Could be a faulty fuel sending unit that's telling you lies. Or maybe the sending unit got knocked outof calibration when you or if you've changed the pump. If the car runs pretty good with a full tank of gas, then there's your problem.
Dee