Hi all,
Trying to pin down a vacuum leak on an 82 380 SEL and could use some help. Using the Miti-vac, I can see most of the system holds vacuum pretty well. I pulled the 4 way tee off the Intake Manifold and pulled
20 hg and it held pretty good...a very sloooowww leak, but not enough I would think that makes the car undrivable.However, when I tested the big black line off the charcoal canister going to the Throttle Valve Housing I couldn't get a reading. Went to manual mode (mouth) and was able to push and pull air throught it pretty easily and could hear the air whistling in the air guide housing. Did the same thing on the line from the distributor to the Throttle Vavle housing (white/red line) and got the same result...no vacuum or pressure response but could hear the air moving in the housing. Should these two lines normally be able to hold vacuum? Could the Throttle Vavle Switch be a culprit?