Bomb leakage vs brake servo

Phil Rose pjrose at
Thu Jul 10 11:26:19 EDT 2003

Well the servo was gonna be my suggestion. However I've never tested a bad
one, so don't know what to tell you. How long a time did you observe the
output of the servo? And is it possible it's leaking _so_ fast that it's
"all over" by the time you test it?


At 8:39 AM -0400 7/10/03, Mike Del Tergo wrote:
>A follow up to my last question.  I recently replaced my bomb after it
>exhibited many of the classic, gone south" symptoms.  I actually like the
>firm pedal but the car will be shared by my wife who is not so enamored.
>Any way the bomb was replaced, system flushed as P/S was done at same time
>and the same symptoms exist.  Someone recommended looking into the check
>valve, it turns out this is internal to the bomb, so assumed good.  Next was
>the brake servo, the pedestal upon which the brake M/C rests.  The check per
>Bentley is to remove the return line from the servo and check for leakage, a
>few drops OK, stream, not so much.
>Well as the line runs UP from the servo to the pentosin resevoir, that will
>all flow out, as it did.  No leakage from the servo though.  Bentley is very
>unclear as to where the leakage should come from though I have to assumme
>the servo side.
>Any BTDT's?  seems like a low failure part, maybe a used one is in order?
>The new MSN 8: smart spam protection and 2 months FREE*
>200q20v mailing list
>200q20v at

Phil Rose
Rochester, NY USA
mailto:pjrose at

More information about the 200q20v mailing list