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gunman168

Flooding in interior carpet, what is causing this?

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Hello guys,

I have a 97 Boxster. I left the car outside while it was raining and later found out that the interior carpet was a bit flooding inside. Mostly under the driver's seat carpet, and of coruse this will ruin my already ruined module that controls the locks under driver's seat.

I have read somewhere long ago that there is some kind of a drainage system in the front (or rear) of the car that might be clogged that is causing flooding problems in the carpet area but I cant find it.

Does somebody know where I could find this drain of some sort and instructions on how to clear them? To stop these leaks inside the car. Or maybe a solution to my problem?? I cannot avoid rains.

I desperately need your help on this guys, if this continues it will definitely cause more trouble.

Thank you for your support my dear friends.

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Hello guys,

I have a 97 Boxster. I left the car outside while it was raining and later found out that the interior carpet was a bit flooding inside. Mostly under the driver's seat carpet, and of coruse this will ruin my already ruined module that controls the locks under driver's seat.

I have read somewhere long ago that there is some kind of a drainage system in the front (or rear) of the car that might be clogged that is causing flooding problems in the carpet area but I cant find it.

Does somebody know where I could find this drain of some sort and instructions on how to clear them? To stop these leaks inside the car. Or maybe a solution to my problem?? I cannot avoid rains.

I desperately need your help on this guys, if this continues it will definitely cause more trouble.

Thank you for your support my dear friends.

The Boxster has two drains in the convertible top well, one left and one right, located in the foam drain trays, below the location of the V-levers. One or both of these are probably the cause of your water intrusion.

There are also two drains under the front trunk, to the sides of and at the rear of the battery tray.

For photos and diagrams, take a look at Mike Focke's Boxster Pages, here: http://sites.google.com/site/mikefocke2/drainsdiagram

Regards, Maurice.

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If someone has been in the doors and the rain shield is not fully sealed to the door, it will allow water to enter also

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On 11/12/2011 at 10:23 AM, infocusf8 said:

What's a good way to check and or clean those drains out?

To verify that none of the water is going into the cabin, you can do the following test.

Place a drain pan under the car, directly under the rocker panel just forward of the left rear wheel. Any water that drains from the convertible top foam drain tray on that side normally exits from a tube that is hidden behind the small wheel well liner that is bolted onto the front of the rear wheel well (on that same side). The water will drain from behind and under the wheel well liner.

Then, pour a carefully measured pint of water and pour into the foam drain tray on the left side and collect and measure the volume of water that you have collected.

If you have the same amount as you poured in, that is a good indication that the water is not going into the cabin, at least for that volume of water.

You can then pour more water in and observe that the water is draining freely, and not pooling over the drain hole at the bottom of the foam liner.

Repeat the same procedure on the right side.

If the water is draining slowly, you can clear the drains with some compressed air. Do not use a wire hanger or anything with a sharp point as you risk puncturing the drain tube or separating the drain tube from its little funnel directly under the foam drain tray.

Also be sure to verify that the other small drain (one on each side), which is located at the front outboard corner of the metal channel at the top of the rear quarter panel, also drains freely. You can see that small drain if you look in the outboard corner of the top of the rear quarter panel, directly under the very forward tip of where the clamshell would be if it were in the completely closed position. That drain (again, one on each side) also empties from a separate tube which exits behind the forward wheel well liner.

Regards, Maurice.

Edited by 1schoir
spelling, clarifying language.
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I too had this problem on the passenger side of my Boxster. Thanks to posts from others I was able to correct the problem. Raise your convertible roof about 1/2 way on either side of the back window you will find a hole that allows the water off of the roof to drain. My driver side hole was clear. the passenger side hole was clogged and a small lake had formed causing the water to overflow down inside my car. I cleared the drain  hole and have had no more issues

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