Hello i am new here and was just wondering if somebody could help me out.I own a 93 s10 2 wheel drive blazer 4.3 vortec.I bought it and it run about 2 months and then started dieingso i changed the fuel pump ran ok for a while to make a short story I have changed the fuel pump pickup coil modual oil pressure switch filter fuel pressure regulator and gas lines AND still runs till it warms up and soon as you give it trrottle it will die if you turn the key and inguage the pump a few times it will fire i checked the pressure it running about 59lbs i have checked for vacume leaks nothing any help would be great
Thanks

 

Just to cover a common issue, have you taken the EGR off and cleaned it? they have a tendency to get clogged up with carbon and cause all kinds of issues (when you do this get a screened gasket for reassembly to help avoid a reoccurence in the future)