How long should a brake booster hold its vacuum?
10-18-2010, 07:59 AM
#1
How long should a brake booster hold its vacuum? How long should a brake booster hold its vacuum supply? I am confident mine has a slight leak because I can hear it. Also its vacuum will be completely released in about 5 minutes.
Booster seems to pass all the basic diagnostic tests but I dont think those tests will finger a booster with a very tiny leak.
Booster seems to pass all the basic diagnostic tests but I dont think those tests will finger a booster with a very tiny leak.
10-18-2010, 07:24 PM
#2
If you loose vacuum in 5 minutes, there's something wrong. Try replacing the check-valve first (it's that cheap a$$ plastic 90* elbow coming out of the booster) as it's definitely cheaper to do that first. Then if you still have problems move to the booster....or go hydra-boost....
