An 87 Celebrity has several brake lines. They start at the master cylinder, and run under the car to all four wheels.
On the l987 Chevrolet Celebrity with 2.8L V6 the vacuum line diagram is located on the front of the passenger side strut tower.
The gas filter is in the fuel line next to the gas tank on the drivers side of the car.
one of the two things, master cylinder or portion vavle is gone out
87
Timing on a 1987 Celebrity is controlled by the engine control module, computer. There is no provision for adjustment.
The fuse block on a Chevy Celebrity is located on the bottom of the dash to the right of the steering column.
Drop the fuel tank.
By the hissing noise it sounds like you need a new brake booster
Ours was an '87 and it weighed about 2600 lbs.
The electric fuel pump is in the gas tank.
There should be a vacuum line diagram on the passenger strut tower on your Celebrity.
10w30, we used to own an 87, so we know.