Originally Posted by ken78744
It runs better the more gas it has????
Your present fuel pressure is only 1/3 of what it should be, the injectors won't spray correctly and your engine isn't getting the fuel volume it should. Replace the fuel pump.
Again, your TJ's fuel pressure is only 16-17 psi but it is supposed to be 49 psi. To me, that'd be a no-brainer it's time to replace the fuel pump.