Ok, so I had a small piece of rubber hose coming from the metal fuel line by the fender well, to the fuel pump. I pulled this off, and brown rusted colored fuel came out of the fuel pump and line. Pulled the filter off and clear fuel came out from the carb side, but rusted colored came out from the pump side.
Obviously I had an issue with the gunk buildup breaking down from the tank to the fuel filter. (I threw in some Sea Foam a few weeks back and it appears that it may be doing its job, unfortunately it's just trashing the filter as soon as I replace it).
What I did was rigged up a drill pump where the line normally hooked onto the trucks fuel pump, I pulled all the gas through (with all the gunk break down) into 2 5 gallon gas cans. I then dumped 2 full cans of sea foam into 5 gallons of high octane gas, I poured that in my tank, pulled about a half gallon through the line with the drill pump, then let it sit overnight. I pulled the rest of the gas out this morning, and it was pretty much black. Through that back in the fuel tank and siphoned it straight back out, then put about a half gallon of clean gas in, siphoned it out, and at the end it came out clear. I then through 10 more gallons of high octane gas back in the truck, hooked up a universal clear inline filter, and drove the truck 65 miles to work. I inspected the filter once I got to work, and it's as clear as it could be.
I also used the old filter to filter the original 10 gallons I pulled out of the truck, and to my surprise, what once was orange, is now clear. I will use that fuel for my lawn mowers.
Probably not the best way to clean the tank, but it should hold me over until I actually have some time to drop the tank, clean it, and replace all the lines.
