66 chevy truck quit running

[joe1966]

Ok so i had some problems with my truck a while back and then i put a new cap and rotor and module inside the HEI distributor, then my uncle messed with the timing and we got it running great. we ran the 12gauge wire from the fuse box to the distributor, then just a couple weeks ago. i was driving it and it ran fine then that night. we drained the gas out of it and the next morning we put 5 gallons back in it and it would not start at all. nothing. it would just turn over and you could pump it and it just wouldnt start. ive tried to use starting fluid ( not a big fan of ) and still nothing. any ideas? could it be a fuel issues? or??