I know this is an old thread, but for people that maybe searching for this problem and a fix I wanted to add to it and maybe help someone with the same problem. This happened to me too.
What it is, is that the bottom of the tank is now pushed up and causing the fuel to back up in the fill neck and the vent tube is submerged which is on the side of the fill neck and shuts off the pump handle. This shuts off the pump handle by blocking the little venturi hole in the gas nozzle causing a high vacuum condition and shutting the handle off.
What I did was to get an eye bolt, 10 nuts (Stainless so they won't rust) that fit the eye bolt and some JB Weld. I removed the plastic bottom cover one side at a time putting the strap back on each side after pulling the plastic cover out. I then cleaned the bottom of the gas tank really well. I put a nut on the eye bolt flush with the bottom of the eye bolt. Then I mixed the JB Weld putty and put it around the eye bolt and nut and mashed it to the bottom of the gas tank along the dented area, about the size of quarter or fifty cent piece. Then I unscrewed the eye bolt and repeated along the dent.
The next day I went and screwed the eye bolt into the JB Welded nuts on the bottom of the tank working from the deeper part of the dent with a slide hammer (I bought at HB for $20) working my way out down the dent.
This removed the congestion from the filler neck vent tube and fill neck and I can fill it like normal. You will have the JB Weld bumps on the bottom, but you need to put the plastic cover back on anyway for safety in case of a rear end collision so it will hide the lumps anyway.
You can get a gas tank used from the Jyard or a new one for $130+. I just thought I would give this a shot and save some money. All it took was a little time and about $35. My gas tank looked brand new when I took off the cover so I decided to save it and just fix the dent.
good idea
yep have tried that, no luck
I've tried 360 degrees no luck
Excellent picture thanks, I'm thinking I see what the issue is.
Thats how I was thinking it worked. And yep looks like I'm stuck taking the tank out. Thanks for the info have to think about this for a bit.
I'd like to either make or get a smaller/thinner tank so this may push the up a bit on the project list.