Wet backside

[PaulHere]

Can we help Andy with this problem?

Bought my first ever Porsche, a 1984 A plate 924, which all in all looks in good nick having just clocked through the 100k mark. Sailed through the mot without a single piece of work, so clearly has been looked after in the past too.

Have contacted the GB Owners Club and the forms are filled in and winging their way back as I type.

Alas, after the very heavy rain over the last couple of days, we noticed yesterday that the boot (passenger side) and indeed the carpet in the rear passenger footwell were absolutely soaked through. The seat was wet enough that if someone had sat in it, they would have also got a wet backside, so it is clearly quite significant.

Inspecting the boot seal indicates that there is an area just beneath the rear wipe motor which has suffered from some degree of compression (doesn't look much but have ordered a replacement anyhow) so that might answer the one problem, but I would really appreciate any advice or pointers regarding where or what to look for to sort out the quite significant leak into the rear passenger area, or advice if you think they are related ?

Andrew Hobbs

 

[937carrera]

Favourites for water leaks are,

corroded battery box,
sunroof seal,
sunroof drain tubes,
rear window seal,


Take a look in the 944 forum, there's a guy with a similar problem, but later 944's have the battery in a different location

Good luck Andy

 

[Guest]

I have a leak comming throught my rear wiper, the little box with the motor etc fills up then poors onto the rear blind and looks likea big puddle. I use silicone sealer and rubbed it every where and it sealed.

 

[924nutter]

Water there usually comes from the bulkhead region (they dont have monthly meetings yet), runs down the firewall, the inclined floor under the seats and collects in the rear footwell. I once had an oval dash 44S with this problem that the previous owner had 'cured' by punching two holes in the fllor under the carpet. I mean you just don't expect that sort of treatment of a 5 year old car. Anything that compromises the integrety of the bulkhead is likely to leak water. The battery tray, or the grommet through which the wires pass down to the fuseboard, can let water. The heater blower fan should have a seal aorund it, if it hasn't then it can get in there too. Even something like a loose grommet or worse, ungrommeted wire for an alarm or immobiliser that passes through the bulkhead can let water enter. I know, it was the latter, fitted by a previous owner I hasten to add, that caused the ingress of water in my 944 in the end and sealiing the wire entry point fixed it. Put it this way, while my Turbo has been pointing decidedly uphill on axle stands, having the headgasket replaced, about an inch of water collected under the bonnet, up to the heater blower frame. It's all sealed up as it should be, and no water got in.

 

[Guest]

I had a similar problem a couple of years ago with my 924. In my case the symptoms were a wet rear seat, rear footwell and the trim on the rear "c" pillar, on the drivers side was damp, as was the foam beneath the roof linning behind the sunroof. The problem was solved by replacing the rather worn sunroof seal (the one around the removable section rather than the one that remains with the car) and by checking that the sunroof drains were clear. (if you pour water into the drains slowly it should drain via pipes behin the rear wheels).

Hope this helps.[]

 

[924nutter]

I've had a further thought on this, prompted by noticing streaks on the concealed part of the dashboard on the ebay special when the door was open. It is quite possible to have a small leak at the bottom of the windscreen through which water could drip through unnoticed, though on the drivers side you might feel it dripping on your leg. That would soak the carpet quite quickly.