rockhog

Try to blow compressed air back through lines to tank. Your pickup inside the tank could be clogged. Most of these tanks will have a bit of rust in them. Otherwise try to pull fuel back through line with a vacum pump. If you can get the fuel back through the lines easy then you may just need to prime the new fuel pump...have had the same type problems with the electric pump. I built a homemade pressure gauge to put in the line to see when I was getting fuel and what pressure it was holding. I would say the actual lines would not be the problem...just my 2 cents.