Hey everyone, so I had a leak in my main fuel hose from tank to pumps on my 91 w124. I ordered the hose, tank strainer and a vent valve (which has been missing since we got the car) Yesterday everything was installed including the vent valve and for the first time the system held enough pressure to make that PSSSS noise when you remove the filler cap, no leaks so I figured we're all fixed.

Well this morning I gave her a wash and I noticed I was smelling gas, so I look down after she was dried and I see gas dripping from the front right wheel well. I pop open the hood and there is gas coming from this yellow connection that looks like it should have a hose connected to it or something. This has never happened before so I think this has something to do with the vent valve. I also noticed a bubbling noise coming from the fuel tank Maybe I put the vent valve on wrong? Is that yellow thing missing something????

[IMG][/IMG] That yellow connector is leaking gas...What is it??? What is it for???

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2007 BMW 328XI

Okay so I figured out I had put the fuel supply line and tank vent valve line backwards... Swapped and now my question is...on the vent valve, the new one I purchased has three openings, two big ones and one small one the bottom. Do the hoses connect to the big ones or do they connect to one big and one small?

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2007 BMW 328XI

Not sure on your other issues, however the should NOT be a PSSSS sound when you take off the fuel tank cap.

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

Really? Know if the diesels are different? Mine makes a PSSSSSSST almost every time I would remove the cap to fill it.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

x2, there is positive pressure in the tank in both my diesels and 300E. Most cars require a certain amount of pressure (say, 5 psi) before the valve opens and vents. A bigger problem is if the tank sucks in a ton of air, in which case the intake vent valve is stuck closed, the spent fuel creates a suction in the tank and can potentially collapse the tank on a long trip

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth