GAS problem???

[ozbowhunter]

while driving the other day the truck started to shudder then die I pulled to the side of the road and after checking the carb and pumping it a few times it started again but not long after the same thing happened I noticed the inline gas filter had a large air bubble in it and it seemed like it was sucking air after getting it started again and getting home it was running fine and the filter was now full

but today the same thing happened again so I removed the inline filter to see if it was leaking I checked the fuel pump after doing this and there is plenty of gas getting to the carb the issue is now the engine will not idle at all and it will only start with the gas pedal flat to the floor
am I looking for a new carb ? or am I missing something? any ideas will be a great help