I am new to the LS engine.I just bought a 87 c10 with a 5.3 (I hope) and a 4l60 trans.I drove it home 70 miles and it quit on me numerous times.It would always start back up and go a little ways and quit again.
When I got it home I checked the fuel pressure at the rail and it was 42psi at idle.With that not being enough pressure I pulled the original fuel tank and it had a Carter (I forgot the model number) in tank pump.
I installed a new ac delco pump put everything back together.Now with new pump I have 47psi with the vaccumn line on the regulator when I pull the vaccumn line off rail pressure goes to 56psi.Does this mean the regulator is bad?
I checked the compression and got this:
#1 cylinder 155 psi
#2 167
#3 174
4 170
5 175
6 175
7 145
8 140