Gas tank help

I have a problem with the fuel tank-I think. After filling up, and going to work, I came out to see a large puddle under the drivers side of the truck. It was gas. I was parked on a small decline, and the fuel had pooled towards the front left tire. I took a look underneath and saw fuel dripping slowly off the framerail on the driver side. I couldn't tell where the actual source was though. So, I ask, what's the best way to diagnose this problem? Is there a hole in the tank somewhere, or is it somewhere else? Any help is appreciated. Thanks

Replicate the situation. Raise the rear of the truck and start looking from where you saw the gas dripping off the frame. Follow the fuel line back toward the tank until you find the source of the leak. If it isn't easy to spot, start from the same spot and follow the line up toward the engine. This is definitely not something to ignore!

Thanks--I'll try it out. I'm guessing using a match or lighter for light would be my best bet?

Lol kaboom, does your filter look dry its right on the inside of the drivers framerail.

Does it only do it after you have filled up?  If so, I would be looking at the seal at the top of the tank at the sending unit or at the port on the front of the tank which quite a few people have had trouble with cracks/breaks at this location.

just had that problem last week i bought a tank and pump did it all new even rubber coated the tank