The hose diameter has stretch bigger then factory specks. Or the vacuum pressure is higher than expected.
Check for vacuum leaks. It's the usual culprit.
which one ?
A 2000 Ford Expedition vacuum hose diagram can be obtained from most Ford dealerships. The vacuum hose diagram can also be found at most auto-parts stores.
you have a vacuum leak
A vacuum breaker is a check valve installed on the exhaust casing of a turbine. It opens to prevent the collapse of the exhaust hood when the turbine cools and the condensing steam produces a vacuum.
why we are maintain vacuum in steam turbine at steam outlet or exhaust side
If a fan is operated in a vacuum, it will not blow while turning.
Check for a vacuum leak -sounds like it is starving for vacuum and reverts to the default position
Air pressure out of the vacuum's exhaust automatically creates a negative pressure (a vacuum) at the machines front end - that picks up the dirt.
Some vacuum pumps can produce useable pressure at the exhaust port but most are not fitted to connect a hose to the exhaust. The Cole-Palmer EW-79202-00 Air Admiral® diaphragm vacuum/pressure pump is one such pump that can be used to produce a vacuum or pressure.
well up urs
Yes.