Does 1994 Chevy s10 pick up have fuel pressure relief valve?

No, the 1994 Chevy S10 pickup truck does not have a fuel pressure *relief* valve in the traditional sense like some fuel injection systems. Instead, it uses a fuel pressure *regulator*, which maintains the correct fuel rail pressure. This regulator controls pressure by returning excess fuel to the tank, effectively acting as a pressure release mechanism, but it's not a separate, dedicated "relief valve."