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Old 03-16-2017, 05:48 AM   #13
Paul
Porsche "Purist"
 
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Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
Garage
78F350's post nails it. Bleed the brakes. The dealer is likely correct in suspecting a leaking master cylinder which can leak into the booster.
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.

Last edited by Paul; 03-16-2017 at 05:53 AM.
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