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View Full Version : Imploded gas tank? e34 540


rnrn
11-13-2006, 12:31 AM
OK, i was lucky enough to join Scott, JR, Kris, Brandon J at Dave Rs house last weekend in Chicago for the subframe bushing rally and while it was on the rack we all noticed my tank has imploded! Now I ran it dry (gasp) late this summer less than one block from the gas station-- are there any other possibilites for this? Any remedies or am I stuck with a smaller tank now or need to r/r?

Now I know why it only takes 15 gals to fill it up!
Denton
11-13-2006, 12:32 AM
Bizarre.

But you have my favorite wheels! :D
winfred
11-13-2006, 12:37 AM
usually a mud dauber nest in the tank vent or something like that, been a while and i can't remember where it's located on that car, usually up in the right rear wheel well
Milkboot
11-13-2006, 12:53 AM
First my exploding fuel pump, now a imploding tank!

I have never seen anything like that myself, is there like a dent in the tank or something? I would love to see a picture of that!
bsell
11-13-2006, 05:22 AM
usually a mud dauber nest in the tank vent or something like that, been a while and i can't remember where it's located on that car, usually up in the right rear wheel well

So there is a tank vent someplace other than in the gas cap? Most vehicles have pressure and vacuum relief valves in the cap. Are the valves in the top of the tank (fuel pump access hatch?).

I have seen a Citroen diesel with a collapsed tank. There was no pushing the 'dent' out of it manually. It collapsed in a way that stopped the gauge float at 1/2 tank. Not good!

Brian
winfred
11-13-2006, 08:41 AM
they can suck the tank totally flat, looks like a raisin


First my exploding fuel pump, now a imploding tank!

I have never seen anything like that myself, is there like a dent in the tank or something? I would love to see a picture of that!
632 Regal
11-13-2006, 02:17 PM
my old cam used to cause a whoosh sound from vacuum when I took it off, new cap=no vacuum
rnrn
11-15-2006, 12:41 PM
Ill try and get one if I can get in on a lift again. Its pretty impressive/scary/. Ill replace the cap as a starter though. Who knows...
E34 530
11-15-2006, 12:55 PM
Here was my old tank that the genius's at the tire balancing place put in mine. You can see it was imploded and the support bars didn't even reach the tank. (They didn't have an IQ over 7)

http://i14.photobucket.com/albums/a314/ripcurl530/FXCD0013.jpg
http://i14.photobucket.com/albums/a314/ripcurl530/FXCD0012-1.jpg
http://i14.photobucket.com/albums/a314/ripcurl530/FXCD0014-1.jpg
Jehu
11-15-2006, 01:25 PM
Who's the babe?( that better be a girl....)
Triton540i
11-15-2006, 01:45 PM
That's so weird?! I've run my tank down to the point that the OBC didn't read any mileage left... but I'm still filling over 17 gallons or so?

Hey... here's an interesting website I came across when I was doing a search on the fuel capacity of my gas tank. The numbers for gas mileage is almost exactly what I'm getting on my 5er. I'm getting about 16.5 in the city and on my Chicago trip to the E34 gathering I got about 24.6 miles per gallon, pretty cool!

One more thing... if you want to research your car(s), then you just click on the side bar for "Select Make" versus clicking on the top selections... otherwise you have to get a user name and all that stuff. Happy Hunting!

http://www.fueleconomy.gov/feg/noframes/11808.shtml

Ooooohhh, here's a link to the best and worst fuel efficient cars on the market today... very interesting!
http://www.fueleconomy.gov/feg/best/bestworstNF.shtml
E34 530
11-15-2006, 02:30 PM
Who's the babe?( that better be a girl....)

better start waving the gay pride flag, cause that's a dude.
colo525i
11-18-2006, 05:08 PM
Just noticed that my 525 has the same issue with the collapsed tank. only holds around 15 gals. So far i am gathering that i should replace the tank itself, charcoal canister, gas cap and blow out the evap lines so i am sure they are clear, any other things i should do to prevent this from happening again? also are the tanks common to all gasoline e34s?
Paul in NZ
11-18-2006, 05:37 PM
is there any way that you could pressurize em enought to blow them out again?Youwouldnt get tem all the way back but its an idea??
Felixdacat
11-18-2006, 05:53 PM
Use a plunger.:p
colo525i
11-19-2006, 02:27 AM
One final question on this, where is the line that allows outside air into the vapor tank? I think this would be the line to check for a clog.
rnrn
12-09-2006, 08:19 PM
One final question on this, where is the line that allows outside air into the vapor tank? I think this would be the line to check for a clog.

see if it's clogged? Thanks in advance...
Qube
12-09-2006, 09:20 PM
How accurate is that data? :) Apparently by 1989 standards, this is a compact car.

Size Class Compact Cars
Engine Size (liters) 3.4
Cylinders 6
Transmission Manual (5 sp)
Drive Rear-wheel drive
Gas Guzzler yes
Turbocharger no
Supercharger no
Passenger Volume 91ft3 (4D)
Luggage Volume 13ft3 (4D)
Additional Engine Characteristics (GUZZLER) (FFS) (MPFI)





That's so weird?! I've run my tank down to the point that the OBC didn't read any mileage left... but I'm still filling over 17 gallons or so?

Hey... here's an interesting website I came across when I was doing a search on the fuel capacity of my gas tank. The numbers for gas mileage is almost exactly what I'm getting on my 5er. I'm getting about 16.5 in the city and on my Chicago trip to the E34 gathering I got about 24.6 miles per gallon, pretty cool!

One more thing... if you want to research your car(s), then you just click on the side bar for "Select Make" versus clicking on the top selections... otherwise you have to get a user name and all that stuff. Happy Hunting!

http://www.fueleconomy.gov/feg/noframes/11808.shtml

Ooooohhh, here's a link to the best and worst fuel efficient cars on the market today... very interesting!
http://www.fueleconomy.gov/feg/best/bestworstNF.shtml