Plenum Chamber Drain Holes

**manclad** · 30-10-2010,05:39 PM

I have owned my 97 A4 for over 11 years and I frequently have to unblock the drain holes under the battery and the servo, to drain water that has collected.

Since this usually involves removing the battery, this can be a pain.

Reading through the postings I can see that this a common problem and was wondering if Audi, or anyone had come up with a solution?

**yaman** · 30-10-2010,06:00 PM

Originally Posted by manclad

I can see that this a common problem and was wondering if Audi, or anyone had come up with a solution?

Yeah, remove the rubber bungs and throw them in the nearest bin,

VAG have now started doing this too.

Regards
Jim

**manclad** · 31-10-2010,06:01 PM

Originally Posted by yaman

Yeah, remove the rubber bungs and throw them in the nearest bin,

VAG have now started doing this too.

Regards
Jim

Are there any problems regarding the removal of the bungs?

I was thinking along the lines of fumes being dragged in and such.

**portovechios** · 31-10-2010,06:35 PM

Stick a peice of stiff wire down them and hook them somewhere accesible so you can do them everytime you fill up with washer say...

**manclad** · 31-10-2010,08:47 PM

Originally Posted by portovechios

Stick a peice of stiff wire down them and hook them somewhere accesible so you can do them everytime you fill up with washer say...

I actually tried this a couple of years back, but whilst it did allow some water to drain it didn't get rid of the crap and they soon blocked again.

**yaman** · 31-10-2010,06:57 PM

Originally Posted by manclad

Are there any problems regarding the removal of the bungs? I was thinking along the lines of fumes being dragged in and such

The bungs were never designed to be airtight (fume-tight)

When they are airtight....... they are water-tight and flooded!!!

This fume theory is nonsense, and frankly, doesn't hold water
(no pun intended)

Regards
Jim

**manclad** · 31-10-2010,08:00 PM

Originally Posted by manclad

I was thinking along the lines of fumes being dragged in and such.

Found this https://www.vwaudiforum.co.uk/forum/s...ad.php?t=82286

Looks like removal might lead to a fume problem

**yaman** · 31-10-2010,08:36 PM

Originally Posted by manclad

Found this https://www.vwaudiforum.co.uk/forum/s...ad.php?t=82286
Looks like removal might lead to a fume problem

I suspect his fumes were entering the car from another source,
probably the boot. Where were they coming from, the exhaust?

If the fumes were coming from the front of the car, then something
needed fixed. To concentrate on drain-holes is bizarre.

Think about it, how could the reinstatement of an non-airtight
bung stop anything?

Regards
Jim

**manclad** · 31-10-2010,08:41 PM

Originally Posted by yaman

I suspect his fumes were entering the car from another source,
probably the boot. Where were they coming from, the exhaust?

If the fumes were coming from the front of the car, then something
needed fixed. To concentrate on drain-holes is bizarre.

Think about it, how could the reinstatement of an non-airtight
bung stop anything?

Regards
Jim

I agree.

I will remove them next chance I get and report.

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