Fuel Problems when starting the car on Honda Civic

Average mileage: (–)
Engine affected: 1.6L 4 Cylinder
1 model year affected: 1993
1 person reported this problem
problem details
1993 Honda Civic - 1.6L 4 Cylinder
The car has difficulty starting when it has been sitting for a while. The fuel pump has been changed and it still seems like it isn't getting enough gas when trying to start it. I'll pump the gas pedal and eventually it'll fire but then it revs and sometime stalls so I'll have to try it again. Eventually it will rev from 1000rpms to 2000rpms and will eventually level off at the normal idle rate. Not sure what I can do to get this fixed. 2 different auto shops haven't been able to figure it out. they just think it was the fuel pump.