air blows through all vents, i can hear the vac pump pumping, usually stops when i have idled for a min, im thinking my check valve is missing for the vac hose.

is the check valve in the engine compartment? or inside the vehicle.


also could my cam be causing low vacuum from excessive overlap? brakes seem to be harder to clamp down as well, not as snappy as most cars i have driven.


i have the automatic climate control