Hey thats a good one! I never heard of the Gremlins before. I mean a neighbor I had when I was kid brought home a brand new AMC Gremlin one day. Pretty funky car for that time period, and they thought it would out run my dad's Alfa. But I assured them, nothing could beat my dads Alfa! I have to get that book though, 56 pages and all. Sounds interesting.
As far as the gurgling, my thought would be, even if you increased the internal pressure of the tank, predominately by Charles law, the gas vapor pressure would have increased uniformly, pressing down on the fuel liquid as two pieces of wood pressed together. Their generated pressure against one another would be dispersed over the surface uniformly, so gurgling would be impossible. Also remember that gas vapor is a liquid, but in a gaseous state. So theoretically, they are two liquids pressing against eachother. Now if a convection current of some kind was created in the tank by something breaking the surface of the liquid, then perhaps you would hear gurgling. Perhaps the return fuel line spraying down in the tank. I don't know. But in every scientific experiment I can remember from elementary school and from watching Mister Roger's neighborhood, gurgling or bubbles forming in liquid almost always came from an external oxygen source. Simply air being injected into the liquid itself. Maybe Walt Disney made an animation on that as well! T-Mobile, America's First Nationwide 4G Network Sent by Samsung Mobile Bruce Giller <[email protected]> wrote: >I first attributed the gurgling to Real gemlins (http://goo.gl/B94YZ) >playing fuel polo inside the tank in wet suits ... ;-} > >My second and more lucid thought is that the gurgling was due to the high >pressure in the tank which was escaping via the filler cap and FI pump fuel >return hose. It was roiling up the gas inside making it 'splash' about in >odd ways. Remember that when I opened the fuel filler, both pressurized >air and fuel came spraying out. > >Bruce > >On Mon, Jul 30, 2012 at 9:41 AM, John Palumbo <[email protected]> wrote: > >> So what do you think caused the gurgling sound? >> >> T-Mobile, America's First Nationwide 4G Network >> Sent by Samsung Mobile >> >> Bruce Giller <[email protected]> wrote: >> >> >I can't see how the fuel pump can pressurize the tank that much. The >> >pressure from the pump to the SPICA pump is the critical reading (15-17 >> >psi). On the return leg, the pressure is quite low in comparison for at >> >the gas station I removed that hose from FI pump to test that gas was >> >getting delivered to the FI pump. But it isn't hard to run the pressure >> >test for I've got the hoses all set up. I guess I can test both sides of >> >the fuel circuit while I'm at it. >> > >> >And all the gas fumes/drips are at the fuel tank - no smell or evidence of >> >gas in the engine compartment. And now I'm convinced that the only leak >> at >> >the tank was where the fuel return line attached to the tank. It caused >> >the dripping and sprayed gas onto the top of the gas tank leading me to >> >think that the fuel gauge sender gasket was leaking. I pushed the return >> >hose further onto the metal tube and tightened the FI-type hose clamp >> >tighter. >> > >> >Bruce >> > >> >On Sun, Jul 29, 2012 at 10:06 PM, Brian Shorey <[email protected]> wrote: >> > >> >> I'd check it again. If there is a regulator that's crapped out, or a >> >> clogged return line, it will probably be higher. A reading from a year >> ago >> >> tells you that you had the right pump, or a pump properly regulated, a >> year >> >> ago. It doesn't tell you what's happening now. >> >> >> >> With your indicated smell of fumes, I'd be alarmed. Like the guy with >> >> high blood pressure on the verge of a stroke, your car might be on the >> >> verge of bursting into flames. >> >> >> >> bs >> >> >> >> Sent from my iPad 4 >> >> >> >> On Jul 29, 2012, at 6:10 PM, Bruce Giller <[email protected]> wrote: >> >> >> >> > 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 >-- >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]
