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    MORE Vacuum Leaks

    If you recall, I found a vacuum leak a few months back in this thread: http://www.r3vlimited.com/board/showthread.php?t=286275

    Makes sense, it was a metal on metal connection with no press fit. JB Weld fixed that.

    Now after rigging a ghetto-fabulous smoke machine with a Swisher and a transfer pump, I've found two more leaks as indicated below. The smoke is literally emerging from in between the coils on BOTH return springs. RealOEM says that the throttle body is one solid piece and can't be disassembled. Are there seals/gaskets underneath both springs that can be replaced? I've read jlevie's comprehensive list of all possible vacuum leak locations and these leaks don't make the cut.

    There is a nut above both springs, but the linkage still doesn't want to come off (because it's connected to the butterfly inside the housing, yes?). Anyone else run into this before?
    Attached Files
    1989 325i Lachssilber Sedan
    5-Speed Swapped
    M30B35 Swapped
    MegaSquirt MS3X

    1987 325i Lachssilber Sedan
    260k OEM Automatic Daily Baby

    #2
    There are no seals or replaceable parts in the throttle body. That leak is from wear and the only fix is replacement.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

    Comment


      #3
      I managed to get the linkage off and found tangible play in the throttle plate shaft. The cheapest new one I can find is about $353, is such an expensive vacuum leak even worth fixing? That's a lot of green for such a simple part...
      Last edited by EatsHondas; 06-23-2013, 06:02 PM.
      1989 325i Lachssilber Sedan
      5-Speed Swapped
      M30B35 Swapped
      MegaSquirt MS3X

      1987 325i Lachssilber Sedan
      260k OEM Automatic Daily Baby

      Comment


        #4
        You should be able to obtain a good part for a lot less than that.
        The car makes it possible, but the driver makes it happen.
        Jim Levie, Huntsville, AL

        Comment


          #5
          Buy used dude lol.
          Frankly you're the first I've heard to have a leak there so a good used replacement is out there.

          1991 325iS turbo

          Comment


            #6
            yea, I had the same exact problem, had a good used throttle assembly at my dor for $45, shipped
            1989 cirrisblau-metallic 325i

            Comment


              #7
              I didn't want to buy used since I assumed all high mileage TB's would have this problem. I'll definitely look around, thanks guys.
              1989 325i Lachssilber Sedan
              5-Speed Swapped
              M30B35 Swapped
              MegaSquirt MS3X

              1987 325i Lachssilber Sedan
              260k OEM Automatic Daily Baby

              Comment


                #8
                Originally posted by EatsHondas
                is such an expensive vacuum leak even worth fixing? That's a lot of green for such a simple part...
                Originally posted by EatsHondas
                I didn't want to buy used since I assumed all high mileage TB's would have this problem
                you can't have it boths way dude

                just get a used one
                1989 cirrisblau-metallic 325i

                Comment


                  #9
                  Originally posted by SpecM View Post
                  you can't have it boths way dude

                  just get a used one
                  That's what I'm doing now, I'm just gonna be pissed if the used one is worn out too.
                  1989 325i Lachssilber Sedan
                  5-Speed Swapped
                  M30B35 Swapped
                  MegaSquirt MS3X

                  1987 325i Lachssilber Sedan
                  260k OEM Automatic Daily Baby

                  Comment

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