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  1. #1
    John L
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    rear sunroof drain tube cleaning

    After finding the rear passenger floor soaked with water.......

    (so thaaaaaaats what that smell was)

    I Just cleaned my Sunroof drain tubes at lunch today....here is what I did.

    Remove outside vent strip on C-pillar (not on the inside, like I started to do). On the outside of the car, remove the "vent pieces" on the C-pillar. My 1985 535 "vent valences" came off nicely, after I squirted a little warm water in there & wiggeled/rocked the metal vent strip back & forth about 20 times, Just start working on one end gently lifting & wiggling as you pull. I got lucky & none of the plastice tabs broke off. At the very top of the vent, you can barely see the end on the plastic sunroof drain tube, & its bent slightly in towards the car.

    Using a weed whacker string, I made sure the cut end edges were sanded a little. Reem it all the way up to clear things out. A nice little trickle of water came out my right side tube. Thats it, your finished. (Just in time before whats left of Wilma hits us Eastern PA folks.)

    Do the other side & the fronts. Vacuum debris out of the entire sunroof area.

    John L
    Lafayette Hill PA


  2. #2
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    Member No: 45147 andyd is an unknown quantity at this point andyd's Avatar
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    Re: rear sunroof drain tube cleaning

    fronts arent so easy because they drain into rocker panels and the panel drains get plugged with debris. 86 528e swarz SO special
    86 528e mostly burgundrot (grape)
    88 528e lach silber (bormann6)

  3. #3
    EdinLA44
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    Can you get to the rear ones...

    ..from the back part of the sunroof area or do you have to work back up into it from the c-pillar vents?

  4. #4
    John L
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    work it backwards from the C-pillar vents


  5. #5
    John L
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    how does one find the rocker drains

    so I can clean them out ?

    JL

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    Re: how does one find the rocker drains

    they are a series of holes running along the under sides of the rocke panels, The front ones collect the most dirt and that is where the sun roof drains empty . Go look, it will be fairly obvious 86 528e swarz SO special
    86 528e mostly burgundrot (grape)
    88 528e lach silber (bormann6)

  7. #7
    John L
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    I will, thnx.......Sometimes its the

    ....obvious that eludes me....

  8. #8
    Mark M
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    We have used weed eater line......

    ....use a stiffer grade weed eater line. Thread them through the drain holes from the top of the car. Use the line similar to how a plumber would use a household drain snake. After you get the line in, jiggle it and spin it to break up any blockages.

    '97 M3/4
    '88 M3
    '90 525i
    '84 533i

  9. #9
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    i like to use compressed air....

    84 325e
    87 535is
    90 325is
    85 535i rip


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