Originally Posted by Mountainboy
I would go ahead and replace it because chances are the jury-rig won't work for long. It just depends on what your car uses vacuum for. Some cars use it for HVAC, many use vac for brake boosters, and some for emission control devices. Save yourself a possible check engine light experience.
Well I'm wondering what it does because the brake booster and emissions devices already are hooked up to a vacuum source (the intake manifold)...I can't possibly understand what the vacuum tank does. On the vacuum diagram in my Helms, all it has is the line coming from the manifold to the vacuum tank but nothing coming off of it. So it's not even like it provides vacuum to anything.