Mercury Repair Questions? Ask a Mechanic for Answers ASAP
Hi, My name is Jay
The Tee where it connects to brake booster, PCV and throttle body will get a small hole in it where it connect to the throttle body. Check it there for a bad vacuum line. It comes as an assembly from store or dealer. On the a/c you need to check the small vacuum lines where they go into the firewall for the a/c and trace back to vacuum canister and to the engine and repair any cracked lines.
No you do not. Follow the hose from the brake booster and where it connects to the intake back side.
The vacuum tee is the part that goes bad. I would not recommend cutting it out until you know if it leaking and you have the replacement. It will show small holes and will leak vacuum if it is bad. It will be soft and mushy if it is bad.
You can plug it to test idle and see if it helps but will not have power brakes. Also the other side goes to the PCV valve and this can cause rough running if blocked. You can apply vacuum to the brake booster but it will take a large amount of vacuum to pull a vacuum on the brake booster. You will need to disconnect and block booster vacuum line.