SickNasty

I just recently put a LS1 for a 99 Firebird in my buggy. I'm running a Aeromotive A1000 cell with in tank pump and WIX 33737 corvette filter/regulator. When I turn on the key, the fuel pressure builds to 60 and after pump cuts off it immediately falls to zero. I thought it could have been injectors falled open or leaking but I replaced all injectors and same thing happens. I checked all line and no leaks found anywhere. Any suggestions???

Old Geezer

iTrader: (3)

The pump has no check valve in it.....
BTW, try the fuel injection forum for info like this.

SickNasty

The specs on the pump did not require check valve on the system. Do you think I need to install one somewhere?

LS1MCSS

iTrader: (18)

If it starts and runs fine, no need to re-invent the wheel.

SickNasty

That's the issue. I can't get it started after the pressure falls.

SickNasty

C'mon guys need some help on this!

S10xGN

iTrader: (11)

I would have thought the Corvette filter/reg unit would have a check valve built into it, maybe an expert could chime in? It might be as simple as a bad unit...

C4 LS1

Make sure that you have the correct fuel line off the regulator going to the tank and rail. Maybe you have the lines reversed. Just a suggestion

SickNasty

All lines are correct according to WIX instructions on their website. I thought the regulator could simply be bad so I took it back and got another one. No Difference. Its got me stumped.

S10xGN

iTrader: (11)

Best bet is to find someone else here running that reg and ask about his system. If the regulator does have a check valve, one (or more) of your injectors may be bad. New injectors should hold pressure, but you never know...

donnie_19

http://www.g8board.com/forums/showthread.php?t=52993

sho-me speed

iTrader: (55)

You need a check valve to hold the fuel in the rails after the initial fuel prime.