I just bought a 98 z28, and for some reason it keeps popping the o-ring off the fuel regulator and will cut out realllly bad when accelerating. when i put the o-ring back on the car will run perfectly for about 30 minutes even when put to the floor, and then it pops the o-ring off and cuts in and out. Any ideas at all???? My mods are New 255 fuel pump, Wet kit adj from 50-150 shot with botlte heater, headers, and some other bolt ons. The nos was on car when i bought it and is coming off. I really need some help on this one guys.

 

whats the fuel pressure set at?

 

it reads 58psi at idle

 

is that with the fpr unhooked? do you have an ajustable fpr? might try a oversized o ring.

 

no, that is with it hooked up and the o-ring on,at idle. when it comes off the fuel pressure will go down to like 40psi and be sluggish and hard to start. when the o ring is on its just fine. just cant figure out what can cause the o ring to keep coming off. could i use some silicone to hold it on?

 

are you sure you got the right fpr? did a quick look and the 98 seems to have a fpr only used in the 98.
http://www.summitracing.com/parts/NA...RO&prefilter=1

 

what are your thoughts on silicone'ing the oring on there, or maybe hose clamping it??

 

ya, it was doing popping the orings, and then i bought a new fpr and its doing the same thing

 

do you think it would hurt anything to use silicone on the oring or just hose clamp it??

 

did some more looking and it looks like 98 is a transition yr and your fpr is most likely in the tank and that thing is a balancer, is there a return line hooked to it that goes back to the fuel tank? if not its not a fpr but a balancer. if you can get a clamp on it give it a try.