New 240sx owner: Fuel pump issues

[dcraine]

What's up guys I just bought my first 240sx with a Sr20 swap. It ran fine for two weeks and today stopped, it went from running rough to not idling to barely idling. I cleaned everything, maf sensor, checked for vacuums leaks in all the piping. And cannot figure it out so I bought a fuel pressure regulator because it'll start and idle for a couple minutes then die out like it's not getting fuel. The gauge showed 15psi that's it... could my fuel pump be going bad? Walbro in tank, i do not see an fpr in the engine bay and stick 370 injectors. 15psi is low correct?

[centralcoaster33]

Hey dcraine, you found a 240sx, congratulations! You don't say what year you have nor do you say what year the engine if from. That will be useful information for the future.
Anyway, 15psi does not sound right. I looked at the FSM, but don't know where to find the right fuel pressure number from the factory. The FPR should be right there on the end of your fuel rail with a little vacuum hose going up to it. I did find a thread discussing it and no one suggested anything less that 20 being okay. Here's some links:
stock-fuel-pressure-setting-t235408.html
http://www.nicoclub.com/service-manual? ... 14-SR20DET