Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN







Search Auto Parts

master cylinder problems


  Email This Post



Ed
New User

Nov 10, 2006, 6:38 PM

Post #1 of 4 (1452 views)
master cylinder problems Sign In

I put new brake pads and shoes on my 1988 Chevy Silverado K1500 and adjusted the rear brakes. When I was done I stepped on the pedal to center the shoes, as I have always done with all my other vehicles when I did a brake job. After one or two pumps the pedal went to the floor and I was unable to get a good pedal. I figured the master cylinder failed so I bought a remanufactured one and installed it. I still have the same problem in that the pedal goes to the floor and won't pump up to a good pedal in order to bleed the brakes.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 10, 2006, 9:11 PM

Post #2 of 4 (1448 views)
Re: master cylinder problems Sign In

Some thoughts on this:

Are you convinced that bench bleeding the master was ok?

If you are using a helper to pump the brake for bleeding are they holding the pedal down till you tighten up the bleeder? If not it'll just suck air back in.

Also: It's possible you have a bad new master cylinder and that's tough to determine, T



steve01832
Veteran
steve01832 profile image

Nov 11, 2006, 2:45 AM

Post #3 of 4 (1446 views)
Re: master cylinder problems Sign In

Check the proportioning valve. Sometimes the check valve on the front needs to be reset (by pushing back in). It has a little black rubber boot around it.

Steve


Keoni
Anonymous Poster
Keoni

Nov 11, 2006, 4:06 PM

Post #4 of 4 (1440 views)
Re: master cylinder problems Sign In

I would suspect damaged brake line ( rubber flex line LF and RF )

Keoni






  Email This Post
 
 


Feed Button




Search for (options) Privacy Sitemap

shopify
site analytics