well i have a 94 blazer that needs the fuel pressure regulator replaced and im trying to figure out where it goes first time replacing one..
i bought the part when i was in a hurry and didnt bother asking where it went then i found this site thought it wouldnt hurt to ask other chevy/gm drivers if the possibly know where it is located at
thanks for the help/answers

 

Fuel pressure regulator on Blazer 4.3L CPI W engine (incl'd EGR and IAC check/clean)

That should answer your questions.

 

thanks for the input hopefully this will fix the problem of me pulling it to the river and dumping it

 

I also have a '94 just did this a few days ago to mine, really it's a cakewalk just follow the walkthrough swart linked above and don't rush through it take your time (it doesn't take long at all) clean all the carbon out really well while you have it apart and the difference will truly amaze you (mine ran like crap and was only getting 7mpg before I did this now its getting 18mpg and runs like a new truck).
one other thing the screen on the injector side of my old FPR was still inside the opening when i initially tried to put the new FPR in place, don't try to force it into the opening if it doesn't go in easily stop and look closely because there is a good reason it's giving you trouble.
good luck.