i have a 1999 nissan sentra gxe 1.6L im having trouble keeping it running

What is your question?

it takes along time to start and once it starts it will idle perfect then when i give it gas it bogs down then kills and it takes along time to start it again like its flooded or either its not getting enough gas. i changed the fuel pump, fuel filter , screen, and ignigtion rotor and still doing the same , could it be the fuel pressure regulator? thats my next move but before i go spend more money i rather ask sumone who might know thanks john