[Topic Split]. Vortech Fuel problems - Page 2

tacbear · 11-13-2005, 09:25 PM

Quote:

Originally Posted by QWKSNKE

Have you guys checked the fuel pressure rail sensor? That was the first thing that went out on our focus. Then the pump went out

Lee we got a code: "Fuel pressure sensor error" right after the install and Richard bought a new one. When we made the second dyno run I watched the fuel pressure drop off from 40 psi to 25 psi and the "service engine soon" light came on. Doug was allready hooked up to the car and he said it was the same code so we swapped out the old FPS for the new one, but the fuel pressure dropped off and the car went lean again.

Italian LX · 11-13-2005, 09:42 PM

Quote:

Originally Posted by tacbear

It has a SVT Focus pump that was correctly installed, but there was a fuel delivery problem after the install. It looks like someone put a jack under the tank and jacked the car up bending the tank right at the fuel sump. The bend was fixed and the pump reinstalled and the car ran fine. I runs fine until you accelerate hard, then the fuel pressure goes up like it is suppose to, but at about 3500 the fuel pressure drops off to about 25 psi at 4000 rpm and the car leans out badly. We think it might be a bad fuel pump.

The fuel pump hose and clamps inside the tank need to be checked for leaks. It sound like he has fuel bleeding off when it gets to a certain pressure.

I'm assuming the fuel filter has been replaced recently, right? If not, that's the first thing he needs to do. Lee and I just experienced the same problem tonight on a new-edge Cobra with the fuel dropping off eraticly above 3500rpm.

Scothew · 11-14-2005, 09:33 AM

Fuel filter was changed when the pump was installed.

Here's there graph.

coupe · 11-14-2005, 10:41 AM

Your boost reference to the fuel-pressure regulator is either blowing open or something plugged there?? Causing the fuel-pressure "gain" to not take effect after a certain RPM and thus boost...I would think anyway.

tacbear · 11-14-2005, 03:26 PM

Quote:

Originally Posted by coupe

Your boost reference to the fuel-pressure regulator is either blowing open or something plugged there?? Causing the fuel-pressure "gain" to not take effect after a certain RPM and thus boost...I would think anyway.

QWKSNKE · 11-14-2005, 03:37 PM

Splitting up Rich's for sale thread and moving to the apporpriate location.

Fuel system mods on Rich's car is high pressure 255 pump and 42# injectors, correct? Is there an in-line pump as well or just the focus pump?

QWKSNKE · 11-14-2005, 03:48 PM

Quote:

Originally Posted by coupe

Your boost reference to the fuel-pressure regulator is either blowing open or something plugged there?? Causing the fuel-pressure "gain" to not take effect after a certain RPM and thus boost...I would think anyway.

He is not going to have a boost reference item per se. Remember his car is a returnless style system so his EEC controls his fuel pressure.

The Rock 326 · 11-14-2005, 04:54 PM

Quote:

Originally Posted by QWKSNKE

Splitting up Rich's for sale thread and moving to the apporpriate location.

Fuel system mods on Rich's car is high pressure 255 pump and 42# injectors, correct? Is there an in-line pump as well or just the focus pump?

Just the Focus pump.

Wall96cobra · 11-14-2005, 05:25 PM

Have you tried putting the stock pump back in? If it's not the pump then I'm with Brian about checking the hose on the pump, it could be loose or have a split in it that's bleeding off fuel presure.

The Rock 326 · 11-14-2005, 07:26 PM

Quote:

Originally Posted by Wall96cobra

Have you tried putting the stock pump back in? If it's not the pump then I'm with Brian about checking the hose on the pump, it could be loose or have a split in it that's bleeding off fuel presure.

Getting the time for someone to check it out is the problem, not to mention spending yet more money to do it.

11-14-2005, 10:41 AM	#14
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	Re: Gauging interest in selling S/C kit 99-04 GT Your boost reference to the fuel-pressure regulator is either blowing open or something plugged there?? Causing the fuel-pressure "gain" to not take effect after a certain RPM and thus boost...I would think anyway. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein

11-14-2005, 03:37 PM	#16
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: Gauging interest in selling S/C kit 99-04 GT Splitting up Rich's for sale thread and moving to the apporpriate location. Fuel system mods on Rich's car is high pressure 255 pump and 42# injectors, correct? Is there an in-line pump as well or just the focus pump? __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

11-14-2005, 05:25 PM	#19
Wall96cobra ooooo cake!!! Join Date: Dec 2004 Location: Saks, AL Posts: 1,630	Re: [Topic Split]. Vortech Fuel problems Have you tried putting the stock pump back in? If it's not the pump then I'm with Brian about checking the hose on the pump, it could be loose or have a split in it that's bleeding off fuel presure.