I fired my car today for the first time since last year, and when I turned on my fuel pump (holley blue). It pegged the needle on my 15 psi gauge. My question is, do you think that my guage has gone bad, or the regulator. I tried to adjust pressure at the regulator, but the needle never moved off of the peg. I thought that the blue was only capable of 14 psi? My fuel system worked fine last year without a hint of any problems. Please give me your ideas guys.

 

If your talking about one of those crappey 1.5" guages non or liquid filled I would lay money the guage is just screwy. They are temp sensative big time. If you did not have fuel pushing through the vent tubes or leaking out of the squirters then the setting you had was probably right and the guage is wrong.

I would tell you to get another guage but your taking chances on that on ebeing messed up too. I remember yrs ago at the track we had 6 or 7 of us parked together and read our summit and holley liquic filled and non liquid filled guages at cold idle and all of us had different readings. We all made or time run then checked the guages again, readings were anywhere from 0-pegged at 15psi. So like I said, good luck with these lil crutches and dont put too much trust in them. Your best bet is to get an aftermarket quality guage autometer and mount the guage itself away from any heat. I mouonted mine under the cowl so it sits in ambient air temps and thus far it's been rock steady when the holley liquid filled near reg. is either waaaay low or pegged LOL.

Or you could get an isolater and then mount the guage itself inside the car.

 

It is a autometer pro comp 2 5/8 gauge mounted on my hood under the 6 in cowl. I did notice though that the liquid has leaked out of it. Not sure if i will go with a liquid filled again or not though.

 

Do you happen to have another reg layin around to bolt on and try? When i first installed my mother of all fuel pumps it blew clean through 3 holley regs until I borrowed and installed a Aeromotive regulator, and as many standard holley regulators that see the trash can at the track during a season it may be the reg just went bad or got some crap stuck in it. You could real quick take it apart to confirm nothing is blocking internally.

 

No other regs laying around, I will take it apart this weekend and check it out though. I was also thinking of going to a bypass reg instead of the dead head style. Just be time to spend some more $$.

 

I had problems like that with my BG pressure gauge. Settled itself out after the engine was running for a min, my guess was a pocket of air freaking it out. The other reg for my nitrous fuel solenoid is a different story. It likes to stay around 12 till the solenoid opens, drops to 9 psi then. Still have to try and adjust that. Same thing happens on a friend's car.