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Old 10-02-2012, 06:00 PM
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dc_wright dc_wright is offline
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Mein Auto: '06 Z4 3.0si, '11 128CiC
Originally Posted by drivinfaster View Post
disconnect the vac feed to the booster, block it off, and see if vac increases. if it does, then suspect a leak.

if you have a vac pump, you could also use an adapter to fit the inlet, and then apply vacuum. if it holds, then no leak. if it does not hold, suspect a leak.

I probably wasn't clear in my OP. When I disconnect the vac feed to the booster I get 19". When I tee into the vac feed line so that it's connected to the manifold and the booster is when I get 17"-18".
I've got a mighty Vac and when I connect it to the booster hose I don't think I've been able to get the one way valve to open so I think I've only been testing the hose......I may just have to pump the crap out of it for a while to verify I've got it really evacuated.
2006 Z4 3.0si Sport Package (But I'll still hang with my "homies" in the E36 forum)
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