Blazer Type- 93 S-10 Blazer 4.3 CPI 2WD

The Problem - If not driven for a while it will start and run fine with maybe some idle issues but it doesn't die. When you shut it off you have a small time frame (half an hourmaximum)to start it back up before it strands you for several hours. Itacts like it wants to start, there are sparks, but it acts like it's out of gas when it's really not out of gas.After it sits for 3-4 hours it will start back up and it will run until you shut off again and the cycle keeps going and going!

Could this bethe fuel pressure regulator? If it is where is it located and tips on how to change it.

If not what else could it be?

 

maybe too late to reply but the regulator is under the CPI plenium you will need to remove the intake for this. Are you sure you are getting fuel to the injectors? Next time this happens try to have someone to turn the switch to the on position and hold the bleed off down(looks like an air inlet) located in the fuel line at the back of the motor next to the firewall. If you don't have any gas there change the fuel filter.