Originally Posted by 77Clark
My dad and I just bough a 77 Brave. Its in pretty decent shape. Getting a few things back in working order and the only gauges that don't seem to work is the coolant gauge(the push button one) and the vacuum gauge. Traced the vacuum tubing from the gauge to the motor but led to a dead end. Where does the line go to on the motor?
Well it can be located at a few places....Base of your carb or a plug in the manifold.
Just idle up your engine and start pulling off vacuum lines one by one and you will hear a big hissing sound along with a huge engine stumble....
Maybe where the brake booster is plugged in MIGHT have a place to "T" off.....Good luck.