5literchevyeater

I put a BBK fuel pressure regulator on my car last night and turned the pump on (which is switched) to check for leaks and it sprayed out of the vacuum port. I thought that maybe it was just to tight or not set right because I bought it used but I tried adjusting it with no luck. Then I put a cap over the vaccum port and turned the pump on and it shot up to 60 and stayed there untill I backed out the adjusting screw untill fuel leaked out. Is the diaphram inside ripped? Or am I just not doing something right. It seems weird that the fuel pressure is not dropping when I turn the pump off shouldnt it just go down the return line? Any help is apreciated.

mjr46

the diaphram is ruptured, replace the regulator

5literchevyeater

I probally bought it like that but what could have caused this to happen. And why did the fuel not go down the return line when I capped the vacuum port.

mjr46

diaphram is rubber, it dry rots and ruptures, happens over time, get a new one

black91stang

HI.SAMETHING HAPPENG TO MY 91 STANG , I HAVE A KIRBAN F,P,R. ONY LAST 6 YEARS THIS IS NORMAL LIFE FOR A H, PERFORMANCE F.P.R. WHEN MY 12 YEAR OLD STOCK STILL PUMPING.WHAT DO YOU THING.

EDDIE91STANG75@HOTMAIL.COM

THANK YOU