The pipe into the booster is huge compared to the line to the shut-off, if the
booster is leaking vacuum bad enough could it leak all the vacuum?
-Curt
On Friday, May 10, 2019, 10:24:35 AM EDT, Dimitri Seretakis via Mercedes
<mercedes@okiebenz.com> wrote:
Ok so this morning I checked vacuum at the pump and it is strong. I checked
vacuum at line where it connects directly to booster and it is strong so looks
like booster is the culprit. This also makes sense considering that there was
brake fluid vanishing from reservoir a month ago, presumably leaking into
booster. Question is why is there no shut off?
Sent from my iPhone
> On May 9, 2019, at 11:21 PM, Curley McLain via Mercedes
> <mercedes@okiebenz.com> wrote:
>
> yeah, that is why I suggested checking vacuum at the booster, and if none
> there, test at the vac pump with the big tube off. Vac at pump and not at
> booster indicates broken tube. sometimes the crack is hard to find.
>
> Peter Frederick via Mercedes wrote on 5/9/19 9:30 PM:
>> Before you replace the pump, make sure the check valves are operating and
>> that you have not cracked plastic section of the main vacuum line. It's
>> pretty brittle by now....
>>
>> Peter
>
>
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