Bad Fuel Pump??

[NoBones]

Several other things to check.
If you have a filter type water seperating fuel
filter, check for any signs of corrosion on
the the aluminum frame. They do get pin holes
and suck air. Also do not use a cheap primer ball
they tend to leak as well. Make sure fuel vent
has no restictions. Last but not least update
your fuel pump. The new ones have gaskets that
stand up to todays fuel.

See ya, Ken