Fuel Pump???

[Captkaos]

I would suspect the sock in the tank is gone.  If the truck sat with the tanks empty and built up condensation, rust could have started on the tank...

[theaddictedchef]

Update......

I went to get my truck and took new fuel filters with me.   I changed them and it would crank but wouldn't fire.  I started looking around and found one of the wires on my distributor hanging off.  It was still connected, but just barely.  I reconnected it, and it turned right over. 

Next problem.....with new filters, the truck runs like normal for about 30 miles then starts acting like its running out of gas.  Talked to the old man and he said the same thing Kapt.  The best thing is to buy new tanks, but $$ will prevent that for a bit.  Next best thing is to put some lumber chain in there with some product and swirl it around, flush all the sediment out, dry very well and then reinstall with new lines.  Any thoughts on that?

It's slow, but it's coming together.......

Thanks for the comments!

[Captkaos]

If the tanks aren't leaking, personally I would coat them.  POR 15 make a tank seal product.
http://www.por15.com/US-STANDARD-TANK-SEALER/productinfo/TSG/

Pull the fuel hose off and fill up a mason (quart) glass jar and let it settle and see how much sediment is coming out.  If you have a filter inline and it is getting clogged often though, it is probably the sock and rust...

[theaddictedchef]

I thought the first time you said sock it was slang for the rust in there.   You said it again in this last post.  What is the sock?  I understand the rust in the tank but don't know what the sock is.  Is it the filler tubing (rubber?)?  Is it the outlet tubing going to the fuel pump?  Do the tanks come with some sort of lining in them from the factory? 

[thirsty]

It's a filter on the inlet of the fuel tank pick up to keep larger sediment out of the fuel system.

[Fairlane514]

It sort of resembles a sock you put on your foot.

[bake74]

     As far as your tank question.  I had the same kind of thing with my 74 when I got it running, about every 40 - 50 miles I would have to change filters.  Got tired of that, drop my tank completely, emptied, did the chain thing, washed out good, did chain again, washed again, blew out then turned upside down with a light bulb ( I now I am showing my redneck here ) on a old lamp up inside and let set for a day ( to really dry it out ).
     Reinstalled and have not had a problem since.  ( My did not leak when I leaked tested it before reinstalling it, you should do this while it is still outside the truck, way easier ).