[AznTwins]

I'm having a fuel pressure problem, the car runs but I can't get any fuel pressure at the fuel rail. I have a AEM EMS but the car doesn't start with it connected (i can connect to it) but it runs with the stock ecu but when i give it some gas the car dies. I've had the fuel injectors (low impedence 680cc) cleaned and flow tested and they are fine. I've also replaced the fuel pump (a new walbro and stock), fuel filter/strainer blew the fuel lines out (feed and return lines) I've also checked all of the fuses and changed the battery and checked the fuel pump assembly hose routing but I still don't have any fuel pressure. Any ideas what could be wrong?

 

[HP 350z]

I had the same problem with my car . and the result was my engine wiring harness. are you getting any codes ??

 

[AznTwins]

nope no check engine lights

 

[boosted s14.5 v2]

have you checked to make sure fuel is making it even right before the rail stephen?

 

[AznTwins]

have you checked to make sure fuel is making it even right before the rail stephen?

i haven't checked the side that the fuel line comes directly off of the fuel pump because it uses a different kind of fitting (bandjo bolt) so i can only check it at the end of the fuel rail. I know I have to be getting some kind of pressure for the car to be able to idle as rough as it does but not enough for it to move the fuel pressure gauge past 0 psi.

 

[IH8DSM]

have you checked to make sure fuel is making it even right before the rail stephen?

thats what i was thinking itd be the rail, i get off work at 4 tommorow give me a hollar if you need someone to come over and stare at it for a few hours

 

[AznTwins]

^^^ thanks

also does anyone know what the chances are of the stock supra fuel injector resistor boxes failing?

 

[jcoosi]

What about the fuel pressure reg?

 

[IH8DSM]

^^^ thanks

also does anyone know what the chances are of the stock supra fuel injector resistor boxes failing?

anything can break so theres always a possibility and i did a quick search and couldn't find anything on the resistor boxes besides a replacement for 200 bucks. you could talk to andy he may know

 

[boosted s14.5 v2]

have you checked to make sure fuel is making it even right before the rail stephen?

i haven't checked the side that the fuel line comes directly off of the fuel pump because it uses a different kind of fitting (bandjo bolt) so i can only check it at the end of the fuel rail. I know I have to be getting some kind of pressure for the car to be able to idle as rough as it does but not enough for it to move the fuel pressure gauge past 0 psi.

true. have you taken the rail off and tried to clean it? and i wouldnt think the resistors would have gotten messed up from the ordeal, but you never know.

 

[AznTwins]

What about the fuel pressure reg?

I'm ordering a repair kit for it tomorrow should be here on tuesday. It's a Aeromotive 1000-6

true. have you taken the rail off and tried to clean it? and i wouldnt think the resistors would have gotten messed up from the ordeal, but you never know.

I've taken the fuel rail off and cleaned it already

 

[BURN UNIT]

I'd bet money on a resistor, driver, etc... on the system, honestly.

 

[Mayo]

Do you have power at the pump? The injector driver will have nothing to do with fuel pressure.

 

[AznTwins]

I have power at the pump its @ 12.5v (i measured it last night) through a relay with a direct line to the battery. Also if I can get my car running sometime soon I'm going to be giving you a call about some work i need to have done during my fall break.

 

[AznTwins]

I got the car running again everyone was wrong but thanks for the help/advice anyways. Someone close this bitch and I will be calling carma sometime soon.