I bought this truck with a blown head gasket and the head partially removed. I had the head re-surfaced and put the top end back on with new gaskets. The truck had been sitting for two years with less than a 1/4 tank of gas. When I first tried to start it, it caught immediately though it ran rough and started billowing white smoke and was dripping black fluid. I immediately thought it was oil until I smelled the bad gas smell. I then added 6 gallons of fresh fuel and after a few more tries it wouldn't start at all. I then pulled the fuel line off the filter to see if it was pumping gas. As I turned the key, the engine caught and started to run smoothly. It even idled and the white smoke started to thin out. I didn't run it any longer as the gas was coming out of the filter and was collecting on a rag I had in place to catch the gas and I didn't want to increase risk of a fire anymore than I already had. The fuel pump was working. When I hooked the line back up to the filter, it wouldn't start. Again, I pulled the line off the filter and it caught again. Hooked it back up and no fire. Any ideas?