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'91 164L 3.0 V6 12V 5-speed, ‘92 164 2.0TS 5-speed
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Discussion Starter · #1 ·
How does the cavity behind fuel filler door drain from rain water? Mine is seemingly draining straight to trunk.
 

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1991 164L
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I think there is a small drain hole in it that just drains into bottom of right quarter panel floor and out that floor drain. Wouldn't think with filler door shut you would get much water in there.
 

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Never noticed a drain hole there. Must take a look. In any case as Steve says, with filler door shut unlikely to get much water in there and most will surely just run straight out again, over the rear quarter.
 

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'91 164L 3.0 V6 12V 5-speed, ‘92 164 2.0TS 5-speed
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126 Posts
Discussion Starter · #4 ·
Not much but some. The hole must be by the filler door, a small recess or something.
 

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'91 164L 3.0 V6 12V 5-speed, ‘92 164 2.0TS 5-speed
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126 Posts
Discussion Starter · #5 · (Edited)
The design may be a reason for this. There may also be two layers of metal and when the water gets between, this is the result.
Must keep that rear quarter floor drain nice and tidy.
1648294

Only thing that resembles drain hole is a small recess under the rubber near the edge. First when I looked closely the shape of the cavity I thought that the water was to drain under the door. I think the "floor" is at such an angle but it could be because of the drain hole, too.
1648295
 

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1991 164L
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Jeess-opete! do you even have a filler neck or any metal left to support it?
 

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'91 164L 3.0 V6 12V 5-speed, ‘92 164 2.0TS 5-speed
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126 Posts
Discussion Starter · #7 ·
I'd call this "well ventilated" :unsure:. This (along with both sill ends) has been resolved already with some fresh material. Now just trying to prevent it happening again.
 

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1991 164L
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That greenish tint over blue paint looks like my bud's 87 Blue Milano Silver edition {aka 75 in euro land) before I pressure washed it for him last week. His Milano had a 2011 inspection sticker on it. Even the windows were green tinted with algae/mildew so bad you could not see into the interior.
 

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'91 164L 3.0 V6 12V 5-speed, ‘92 164 2.0TS 5-speed
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126 Posts
Discussion Starter · #9 ·
The black one had been sitting outside for 17 years, and pretty much the whole floor pan especially in trunk area had magically disappeared. What a shame but, nevertheless, great amount of spares salvaged.
 

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The trunk seems to draw in moisture from the main car cabin, through the rear parcel shelf. That and through the actual trunk seal if the lid is not perfectly aligned. Mine used to drip moisture. Tweaked the alignment and now it doesn't.
 

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'91 164L 3.0 V6 12V 5-speed, ‘92 164 2.0TS 5-speed
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126 Posts
Discussion Starter · #12 ·
Great tips! I have to check that trunk lid alignment but is seems the only water is coming through the fuel filler recess. Additional water damages: rear window de-mist fuse has melted away at some point which I've read is somewhat common for these.
 
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