Where do I get get a vacuum line for the regulator on the back of the metering valve
Probably still a dealer item unless you get lucky at a wrecking yard.
No in trying to find out where it connects on the engine
metering valve = acts as a delay in the brake system to allow drum brakes to apply at the same time front discs contact the rotor. However i belive your talking about the fuel pressure regulator, there isn't a line to it. It is inside the upper intake which has vacuum all the time so there is no need for a line and never was
Looking for a Used S-10 in your area?
CarGurus has 1,217 nationwide S-10 listings starting at $2,500.
Search Chevrolet S-10 Questions
Chevrolet S-10 Experts