Fourtitude.com - How do you replace a Coupe GT vacuum advance?
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    1. 03-21-2017 12:51 AM #1
      I just got a nice '87 Coupe GT that has what sounds like classic vacuum advance issues with hesitation approaching 4000 rpms. I checked with a small hose and suction from my mouth and it is not operating so I know it is bad (supposedly they go at about 150-200K miles which is where mine is). I got one that is operating from a parts car but it is still attached to the distributer and I cannot figure out how to remove it - my Audi manuals (Hayes and the "red book") don't address this even though it seems like they should. Sorry to be such a newbie but I don't want to cause more trouble than i need - don't want to mess up the timing, etc. Do I need to take the rotor off and dustcap to remove something (some pins), or is there another trick.
      Thanks for your help.

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    3. Member
      Join Date
      May 24th, 2012
      Location
      Decatur, Georgia
      Posts
      147
      Cars
      1990 VW Cabriolet, 1991 VW Vanagon
      03-26-2017 04:10 PM #2
      The part number for the distributor is 034905205F..double check..and check the forum over here..this one is very silent: http://www.audiworld.com/forums/audi...discussion-29/

    4. 03-28-2017 12:19 AM #3
      Thanks

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    6. Junior Member
      Join Date
      Sep 12th, 2006
      Posts
      26
      11-06-2018 03:51 PM #4
      Just as you suspected, I believe you do need to take the distributor apart. I started rebuilding a similar distributor but stopped as I need to get a puller to get the 5-window cap off the shaft.

      Regards,

      -Louis

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