Bad fuel pump?

[1988manche]

So i have the 97+ swap with the dakota fuel tank and pump, i go to start it and i can hear the pump kick on but it just keeps cranking. I hooked up a fuel pressure tester and it only goes up to 20 while cranking. Is my fuel pump bad? It has a brand new fuel line

[gogmorgo]

Have you had the setup running? 

My '91 MJ would start and idle on 15 psi of fuel pressure with a bad pump but wouldn't really rev. 

What I find interesting is that you're not holding fuel pressure at all. It bleeds off as soon as the pump shuts off. That makes me suspect a pressure regulator problem, although I'm not too familiar with the '97+ fuel system setup. But I would still expect it to at least cough a little with some reassure going to the injectors. 

[1988manche]

I have not had it running. But those years its directly on the pump, so I'm assuming the dakota pump has one on it too, is there anyway to test just the regulator? 

[1988manche]

Stumped the forum on this one i guess ha

[shelbyluvv]

Jump the relay and see if it get the required pressure to run. If not then you have a clogged filter, bad FPR or a bad pump.