986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 986 boxtser with water leakage in the back of the driverside seat !

schoir · 02-26-2008, 08:55 PM

Kouros:

The leak you are describing commonly occurs as a result of one of three causes:

1. The rear drains are clogged up.

2. The foam liner in the convertible top stowing compartment has a rip or tear in it, usually in the area near the V-levers or where the convertible top frame attaches to the body over the foam liner.

3. The plastic membrane between the inner metal door panel and the carpeted door panel is torn or was not re-glued properly the last time some work had to be done on the inside of the door (e.g., new speakers or new door regulator installed).

To verify that the rear drains are not clogged, measure a quart of water and pour it into the top of the drain hole and place a pan under the car just forward of the rear wheel on that side and see if you collect the same amount as what you have poured in. If you get less than what you poured in, you either have an obstruction of some kind below the surface of the drain hole or there is a tear in the foam liner allowing the water to escape to somewhere else, like to the carpet or padding on the rear firewall and/or the floor of the car.

Sometimes the lower carpeted portion of the door panel or the carpet just inside the door sill will be wet, which will indicate that the plastic/rubber membrane under the door panel is torn or not glued properly. Sometimes it will be difficult to detect on the outside of the door panel.

BE VERY CAREFUL not to get too much water under the seat or you might face a $2,000 repair because of everything that the central alarm control unit affects if it is ruined.

Regards, Maurice.

02-26-2008, 08:55 PM	#3
schoir Registered User Join Date: Jun 2007 Location: Freeport, New York Posts: 472	Kouros: The leak you are describing commonly occurs as a result of one of three causes: 1. The rear drains are clogged up. 2. The foam liner in the convertible top stowing compartment has a rip or tear in it, usually in the area near the V-levers or where the convertible top frame attaches to the body over the foam liner. 3. The plastic membrane between the inner metal door panel and the carpeted door panel is torn or was not re-glued properly the last time some work had to be done on the inside of the door (e.g., new speakers or new door regulator installed). To verify that the rear drains are not clogged, measure a quart of water and pour it into the top of the drain hole and place a pan under the car just forward of the rear wheel on that side and see if you collect the same amount as what you have poured in. If you get less than what you poured in, you either have an obstruction of some kind below the surface of the drain hole or there is a tear in the foam liner allowing the water to escape to somewhere else, like to the carpet or padding on the rear firewall and/or the floor of the car. Sometimes the lower carpeted portion of the door panel or the carpet just inside the door sill will be wet, which will indicate that the plastic/rubber membrane under the door panel is torn or not glued properly. Sometimes it will be difficult to detect on the outside of the door panel. BE VERY CAREFUL not to get too much water under the seat or you might face a $2,000 repair because of everything that the central alarm control unit affects if it is ruined. Regards, Maurice.