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Mod | | | Forums66 Topics128,103 Posts1,056,183 Members48,436 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Yeah, that's true Fred, if it's the valve that's leaking down.
Could be bleeding from one side of the chamber to the other
though. Can't be a vacuum on both sides of the flapper or it
wouldn't move, so when there is vacuum on one side there's
atmosphere on the other.
Been a few years since I was into those so the complete circuit
isn't fresh in my mind.
DG
Denny G
Sandwich, IL
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