Installed walbro 255, only 20psi??
 

I just finished installing a walbro pump on my 91. I am running a 14b, 450's w/zdyne. After starting the car, the fuel pressure stays at 20psi. I've tried hitting the gas to notice a pressure change. I also tried removing the vaccum line to the pressure regulator but nothing I do seems to change the psi. I dont get it.... Did I do something wrong in the installation... Could the B&M regulator be the cause of this?? I am lost, please help.

Chris

Re:Installed walbro 255, only 20psi??
 

uh not sure what pressure its supposed to be at for the 91.. I dont know what engine you have either... but for stock b16 fuel rail pressure is around 42 or so...

Re:Installed walbro 255, only 20psi??
 

oops, I have a ZC. I know stock should be 28 at idle. With my old pump, the pressure would increase when I would blip the throttle. Now there is nothing. Also with the vaccum line removed, fuel pressure should go up to 36, which it doesnt.

Re:Installed walbro 255, only 20psi??
 

42 psi is stock with the vacume line off.. sounds like you screwed something up :-P, you have an aftermarket fpr?