Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - brake booster
Thread: brake booster
View Single Post
  #12 (permalink)  
Old 09-30-2012, 06:12 AM
cobalt327's Avatar
cobalt327 cobalt327 is offline
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 598 Times in 547 Posts
Quote:
Originally Posted by vetteman View Post
Do you feel it's a booster problem when,as I mentioned, that the pedal fully returns when driving the vehicle with vac line unhooked from booster?
Yes, I believe it's a prob w/the booster. The valve I mentioned has a seat that has to hold vacuum, even a broken/weak internal valve spring has the potential to be the problem, but the booster would need to come apart to confirm this- something that's outside the ability of most guys, besides the poit that you shouldn't need to fix a problem not of your making.

Given the info you've provided and the checks you've made, if it's not the booster, I'm at a loss.

It shouldn't cause the problem, but have you checked the vacuum check valve between the engine and the booster?
Reply With Quote