Your question is to vague to answer. If you connected a vacuum hose to a water hose you would be ingesting water into the engine.
1984 Chevrolet camaro z28 vacuum diagram 5.liter
You can find a 1986 Winnebago, with the Chevrolet 454 cubic engine, vacuum routing diagram at most Chevrolet dealerships. The vacuum routing diagram can also be found in most Chevrolet engine service manuals.
There are more than a dozen vacuum lines on your 2000 Chevrolet Tahoe 5.3 liter engine. A complete vacuum line diagram can be obtained from most Chevrolet dealerships.
The engine's vacuum is mostly controlled by the cam. You can use a milder cam to increase vacuum, or purchase an inexpensive vacuum reservoir to make better use of the vacuum you have.
The vacuum hose should connect to the back of the intake manifold.
Take a vacuum hose off at the intake manifold and put a vacuum gauge on the port, then read the vacuum with the engine running.
From the booster, to a vacuum source on the engine.
With the engine warmed up and at idle, disconnect the vacuum line to the vacuum advance.Hook up your timing light to number one cylinder. Slightly loosen the distributor. The timing should be about 4 degrees. Move the distributor until the pointer is at 4 degrees. Tighten the distributor and reinstall the vacuum hose.
Show diagram for Chevy 305 engine
Vacuum leak
Emission related vacuum routing can be found on a white sticker located in the engine compartment.
There is a vacuum check valve under the hood at the back of the engine. It is either broken or you have a bad vacuum hose.