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Where does the fuel pressure regulator get its vacuum source from. From a faded diagram it looks like the "air control valve" which if that is the case I dont have one. From the front of the engine on there are no emission devices, ie air pump, hoses, etc. Just straight mechanics. Is there a work around?
The link was semi-good for C4 stuff. Half the pics and links did not work. I do have that vacuum diagram, just dont know what the parts are. I highlighted them in red (aosl attached a pic of what the part could look like)
. For example is the air control valve part of the air injection system (I hope not). What really is the pressure regulator looking for as far as vacuum?
The pressure regulator just gets its vacuum from the plenum. I don't remember exactly the routing, but when I removed the air pump and those two valves from the front of my 85 motor I just removed the vacuum lines that ran from them to the plenum and then just plugged the hose from the pressure regulator into the now open port on the plenum.
85 vacuum line routing
