Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
01-02-2021, 07:50 PM | #1 |
Registered User
Join Date: Sep 2011
Location: N.C.
Posts: 145
|
"wooshing" noise while pressing on brake pedal
Hi all,
I am currently wondering what could be causing a "wooshing" noise as I press on the brake pedal. My brakes seem to function well. Front disc / Rear drum with proportioning valve. There are times that it does not make the noise, but lately pretty much hear it all the time. I'm thinking a bad booster but, don't want to break out the parts gun. thanks for any advice. |
01-02-2021, 09:29 PM | #2 |
Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,620
|
Re: "wooshing" noise while pressing on brake pedal
Assuming vacuum booster power brakes, it is normal for there to be enough vacuum after shutdown for a few pushes of the brake peddle. Without any engine noise, a 'whoosh' is normal as vacuum is 'used up' when the peddle is pushed. Once the stored vacuum is gone, no more whoosh and the peddle gets much harder to push to apply brakes.
On a good booster, the vacuum can remain for many days. One of the early signs of booster failure is that it won't hold vacuum very long. |
01-03-2021, 12:51 PM | #3 |
Registered User
Join Date: Sep 2011
Location: N.C.
Posts: 145
|
Re: "wooshing" noise while pressing on brake pedal
Thanks. Never noticed it before. I thought I had a bad master cylinder because my pedal was going to the floor. Ended up both rear wheel cylinders were bad. One was leaking and the other was not functioning. Replaced those put all new brakes on, bled, and brakes work better than ever. Just hearing that noise which is the whole time I'm pressing the pedal. But if it's normal I'm good, just didn't hear it before.
|
01-05-2021, 11:58 AM | #4 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,068
|
Re: "wooshing" noise while pressing on brake pedal
I had this happen on my 74 once upon a time. It can happen when there's a seal issue on the booster diaphragm. If the brake power assist functions ok, it's no big deal. But if it's annoying you, you can always replace the booster w/a fresh part.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
Bookmarks |
|
|