I got a question for you all. I have a 2000 blazer 2 door. I put in a new fuel pump and it will pump fuel out of the fuel filter win disconnected but I am not getting any fuel to the motor. I thought I might have a clog so I put 120 psi of air through the line. I got air at the other end nothing else. the fuel pump I got from rockauto.com, its a ultra power. I have a 4.3L V6 CSEFI. when I got the new pump I had to change the wire connector. no problem, I can't find what volts are to be at the pump when it's turned on? I have been working on this thing for like a week and its driving me mad. could it be a the pump or ?????. Thank for any feed back.

 

These things are picky about what pump you put in them for sure. I know you said you aren't getting fuel at the motor but have you tried to do a fuel pressure test yet?