New Backdraft owner

yellowstang1 · #1 (**permalink**) 01-03-2015, 02:52 PM

I just picked up a backdraft built in 2009. The car only has 750 miles on it. I went to fill the gas tank for the first time and had nothing but problems. About 3 seconds after pulling the trigger on the gas pump the fuel comes pouring back out. UNDER FORCE. I tried pulling the nozzle out of the tank a little. No success. So I tried pulling the trigger a little less to slow the flow. No success. No matter what I do gas is being forced back up at me. Has anyone else had problems like this? I have a pre #800 car if that helps. Is there a clogged vent line? Where do I look for something like this?
Please help! Thanks

Cashburn · #2 (**permalink**) 01-03-2015, 03:49 PM

Quote:

Originally Posted by yellowstang1

I just picked up a backdraft built in 2009. The car only has 750 miles on it. I went to fill the gas tank for the first time and had nothing but problems. About 3 seconds after pulling the trigger on the gas pump the fuel comes pouring back out. UNDER FORCE. I tried pulling the nozzle out of the tank a little. No success. So I tried pulling the trigger a little less to slow the flow. No success. No matter what I do gas is being forced back up at me. Has anyone else had problems like this? I have a pre #800 car if that helps. Is there a clogged vent line? Where do I look for something like this?
Please help! Thanks

Possibly the vent hose is kinked or plugged. The hose is about a 3/8" size and it runs from the tank to the side of the fill tube just below the body.

jhv48 · #3 (**permalink**) 01-03-2015, 05:14 PM

I hate to state the obvious, but maybe the tank is already full!

Gas gauges have been known to be wrong.

yellowstang1 · #4 (**permalink**) 01-03-2015, 08:22 PM

Thanks jhv48. But the tank is not full. I did check that right away. This happens every time I fill up.
Cashburn. I will check that hose out tomorrow. Thank you.

427BDR · #5 (**permalink**) 01-03-2015, 08:33 PM

These tanks are notoriously a pain to fill. I've experienced the same thing you describe. You need to make sure the pump is flush with the filler hole and push down firmly when pumping. Pump at about 50%-60% on the handle and do not let off until you're done. In my experience If you pump without firmly pressing down on the pump handle it will bubble out.

tpatodd · #6 (**permalink**) 01-04-2015, 06:12 AM

I've learned to fill mine slooowwly. I had this happen to me as well.

Harley753 · #7 (**permalink**) 01-08-2015, 09:29 AM

I have had the same problem - I have an early BDR number 0010 and the fuel cell had no venting - thus the tanks burps and was nearly impossible to fill - I had the cell replaced with a custom AL cell that was vented and all is fine now

I would first look at the fuel cell venting and see if the tube is pinched or could be shortened

jim

lovehamr · #8 (**permalink**) 01-08-2015, 01:53 PM

My first BDR (687) did that and only had the 3/8 vent from the corner of the tank to fairly low in the fill tube. The tank had to be filled very slowly like you are descibing. My current car (1311) has that same 3/8 tube but connects in the fill tube several inches higher than my old car did. In addition I also have a smaller vent at the top of the tank off of the center plate where the internal fuel pump is mounted. With these 2 vents and the higher location in the fill tube I have no problem at all fueling. Hope that helps. Steve

yellowstang1 · #9 (**permalink**) 01-10-2015, 10:51 PM

Thanks for the replies.
I have not been able to investigate this. The car is in storage till spring. Would you guys recommend replacing the tank or adding vent to it?
Thanks.

Ron61 · #10 (**permalink**) 01-11-2015, 04:22 AM

If the vent hose isn't pinched or closed, look and see where it comes out of the tank at. Getting a new tank could be expensive and if you are able to either enlarge that vent if it is in a good place or add another vent I think that is the way I could go.

Ron

lovehamr · #11 (**permalink**) 01-11-2015, 08:48 AM

In addition to what Ron says I believe that where (height) the vent tube connects to the filler neck can have a huge effect on how it acts, the higher the better. In effect, if the fuel that you are pushing into the tank is trying to enter the vent tube as well then you experience a back flow as though there were no vent at all. If however the vent opens to an area above where the fuel is being introduced then the displaced air has a place to go and you're not creating your own plug in the system.