ive got a 1991 DA and just replaced the fuel pump/filter today.. and now ive hit another snag, when i start the car it turns over but doesnt crank up.. "like no fuel is gettin to the engine" also the pump wont always turn on when i turn the key in the ignition... so im thinking it may be my relay "which ill replace tmrw when oreilys opens" but if thats not the problem what could it be? ive checked all the wiring with a volt meter and it seems fine.. the pump is hooked up correctly and everything.. its just not getting gas, also the gauge on my pressure regulator reads 0.. this is so aggrivating

thanks for your help

Murph