Welcome to 2CarPros.
When you say when using starting fluid it wants to but never catches, is the engine firing? Are you sure it is getting spark? If it is, have you checked to see if the injectors are clean and not plugged?
Take a look through these links and see if they help.
Also, I realize the fuel pump is new, but have you confirmed the fuel pressure at the engine is within spec?
Here are the manufacturer's specs.
Fuel Pressure  .................... 284 - 325 kPa (41 - 47 psi)
 With the ignition "ON" and engine "OFF" (zero vacuum)
Let me know.
Saturday, August 3rd, 2019 AT 9:58 PM