VACUUM
Feb 15, 2012 | 07:50 AM
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Posting Guru
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From: Newport, N.C.
VACUUM
How many inHg should the little pump under the hood create? '04 F-250 4X4.
Feb 15, 2012 | 10:25 AM
Joined: Sep 2007
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From: Scio, OR
I've never measured it, nor seen a spec. However, the hubs require at least 8.75 in/Hg to lock, so I'd say at least that much.
Feb 15, 2012 | 11:53 AM
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I found a leak between where I was testing and the pump, this one goes to 25 and shuts off.
Feb 15, 2012 | 12:30 PM
Joined: Sep 2007
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From: Scio, OR
I don't think too much vacuum is a problem, unless it gets to the point that it starts collapsing lines or something.
Feb 15, 2012 | 03:54 PM
Joined: Feb 2011
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From: L.A. (Lower Alabama)
Just went out and checked mine. Shuts off @ 10 in/hg.
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