Vacuum System Problem
I am working through diagnosing for vacuum leaks so I can hopefully pass a PV on my 72'. I am using the 'C3 Headlight guide and performed the 1st test for the headlight switch and pull down (both in the closed position) with very little leakage. Then I did the next test on the vacuum at the 'T' above the relays (held vacuum very well). Then I tried the 3rd test to see if the relays would raise the headlamps individually. Drivers side worked perfectly. Passenger side no vacuum at the yellow port. Now I have no vacuum operation at all for the wipper door or the light pulldown switches. Everything workred well before I started this search but now nothing works. I suspect it could be the passenger side relay is bad. Any thoughts??