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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Brakes and Braking Systems => Topic started by: jdjones on February 22, 2010, 11:12:32 am

Title: Leaky Master cylinder
Post by: jdjones on February 22, 2010, 11:12:32 am

I have an 87 chevy v-10 4x4 350.  I have been working with an ongoing issue with the master cylinder.  It seems that no matter what I do, (replaced 3 times by 2 different shops and 2 times by me) I cant seem to get the master cylinder to stop leaking. Any thoughts would be greatly appreciated.

Title: Re: Leaky Master cylinder
Post by: jaredts on February 22, 2010, 11:31:01 am

I assume the front of the booster is wet every time?  Any way possible that the wrong length rod has gotten in there?

Title: Re: Leaky Master cylinder
Post by: Captkaos on February 22, 2010, 09:44:59 pm

Where is it leaking?

Title: Re: Leaky Master cylinder
Post by: jdjones on February 22, 2010, 11:08:02 pm

Leaks are at the front of the master cylinder by the booster and yes my booster gets its share of brake fuild.  If I ever get this leak figured out, i will replace the booster which is rusted prety good now.

Title: Re: Leaky Master cylinder
Post by: VileZambonie on February 23, 2010, 07:53:14 am

return it and get a booster with master. Bench bleed it before you install it.