I did not check the fuel pressure on Sat. However about a year ago I went thru the entire fuel system trying to discover why the car wouldn't start (faulty microswitch in the SPICA pump to the fuel cut off solenoid - it was always ON) and I did check the fuel pressure. It was around 17-18 psi.
Bruce On Sun, Jul 29, 2012 at 1:17 PM, Brian Shorey <[email protected]> wrote: > Bruce, > > What is the actual fuel pressure? > > bs > > Sent from my iPad 4 > > On Jul 29, 2012, at 8:01 AM, Bruce Giller <[email protected]> wrote: > > > Folks, > > > > On Saturday I did a thorough investigation of the tank's plumbing. The > > fuel pressure light would wink out in about 1-2 seconds and the pump > > sounded normal (not straining). I made sure that the fuel return > plumbing > > in the tank was clean by blowing air thru it and hearing bubbly noises > from > > inside tank (the tank was 1/2 full and the end of the return line was > below > > surface of the fuel). The two vapor recovery connections on the tank > were > > clear (blew thru them), and the vapor container's three connections were > > clear. I double checked the vapor line inlet valve in that it didn't > > release pressure but only allowed air in. The vapor recovery line was > > clear all the way to the engine - little volume goes thru this line > that's > > for sure. And I checked the exhaust system for leaks and there are none > > nearby the tank that would cause the tank to heat up. > > > > I've still no idea just what is going here with this tank. > > > > As to the different styles of FI pumps that Alfa put on SPICA cars, Wes > I. > > has a great write up here: > > http://www.wesingram.com/SPICA_Fuel_Supply_Diagnostic_Guide_Nov_2004.pdf. > > My '73 GTV has the correct 2-port (one inlet, one outlet) FI pump. The > > newer models had the 3 ports. > > > > Bruce > > > > On Sat, Jul 28, 2012 at 11:53 AM, John Palumbo <[email protected]> > wrote: > > > >> I just thought of something else. If your pump only has one port exiting > >> the top of the pump, its quite possible you have an entirely wrong pump > for > >> that particular car! I mean the newer Bosch pumps for the electronic > >> injection cars have only one port exiting the top of the pump. So maybe > >> someone swapped-out one these for the old styled original pump that was > on > >> the car, thinking that it would be more reliable. > >> > >> T-Mobile, America's First Nationwide 4G Network > >> Sent by Samsung Mobile > >> > >> Bruce Giller <[email protected]> wrote: > >> > >>> John, > >>> > >>> My FI fuel pump is the new style with only two ports so there's no way > the > >>> gas can back into the tank from it. > >>> > >>> Bruce > >>> > >>> On Sat, Jul 28, 2012 at 7:18 AM, John Palumbo <[email protected]> > >> wrote: > >>> > >>>> Just a quick thought, I would tend to think it would have something to > >> do > >>>> with the fuel delivery from the fuel pump. The fuel it would seem is > >>>> getting pumped back into the tank, instead of to the pump where it > >> belongs, > >>>> hense you noticed it took longer for the pressure light to go out. > >>>> > >>>> If I can recall, the older pumps had three ports on them, one to the > >> SPICA > >>>> pump, one as a return to the tank, and I think the third was for some > >>>> emmissions thing, I'm not sure. I know the the newer pumps had only > two > >>>> ports. > >>>> > >>>> So maybe if you had a spare pump, you could try installing it and see > if > >>>> it does the same thing. Perhaps there is a sort of check valve system, > >>>> similiar to that of a diode thats gone bad, it being that alows the > >> fuel to > >>>> flow in only one direction, to the SPICA pump. The other thought would > >> be > >>>> to run it with the fuel cap off. But there should be no logical reason > >> why > >>>> the tank should be over pressurizing. > >>>> > >>>> John > >>>> > >>>> T-Mobile, America's First Nationwide 4G Network > >>>> Sent by Samsung Mobile > >>>> > >>>> Bruce Giller <[email protected]> wrote: > >>>> > >>>>> Yesterday we (David Tallerico and I) attended a Seat Time session at > >>>> Summit > >>>>> Point track after a too-long hiatus. The weather temp wasn't hot but > >>>>> pretty warm - mid to upper 80's or so. It is 1.5 hour drive from my > >> house > >>>>> there and we stopped in Charles Town for gas. at around 7:50 am. At > >> the > >>>>> station the car would not restart and we discovered that it was > getting > >>>> any > >>>>> gas for the plugs were dry. The fuel pressure light went out but it > >> took > >>>>> longer than usual for it to go out; usually after running for a bit, > it > >>>>> only takes 1 second for it to wink out. I removed the return hose > from > >>>> the > >>>>> SPICA pump and gas was pumped out with the fuel pump on. We 'fixed' > >> the > >>>>> non-starting problem with starter fluid sprayed down the throats. > Off > >> to > >>>>> the track! > >>>>> ..................... > > -- > > to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi > > or email "unsubscribe alfa" to [email protected] -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
