Fuel problem...need help

Hello,
Check to see if the tank has a good vent. You can try the same test with the cap off.
If that is not the problem you can connect a test gas can to the input (suction side) of the pump. Re do test.
If still NG do same test at the tank.
NOTE: if you add a T at the carb inlet Or the output of the pump you can monitor the pressure with a Gage during testing.
Also check for cracked / rotted metal / rubber lines.
Hope this helps
Keep us updated
happy Mopar :)
Arron