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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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| | | | Joined: Mar 2001 Posts: 259 Member | | Member Joined: Mar 2001 Posts: 259 | I would first try just replacing the Vac check valve going into the booster. If that doesn't cure it then you probably developed a tear in the booster seal and just need to replace the booster.
Joe
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