WET FLOORS YET AGAIN !!!

[Jinxy]

Damn, still getting a wet floor behind passenger side seat, no where else is wet except here, ive tried my hardest to find out where it comes in, to no avail, cant be the rear lights, the boot is dry as a bone, cant be the roof rubber, dry as a bone, checked drain holes, all clear, shall I just give us & keep mopping it up ???

 

[keviar]

Try removing the headlining behind the sunroof so you can see the rubber joining hose that connects the sunroof drains to the nylon tubing which goes to the drain outlets. If you now pour water down the sunroof drain you may see it seep through joining hose as it now so old it is full of tiny holes.

 

[pauljmcnulty]

Series one or two car? If series one the front bulkhead is likely to leak where the battery sits. All cars can have problems with aftermarket alarms etc. running through unsealed holes drilled through the front. Check the drains in the scuttle, under the windscreen, as well, as they can leak in to the cabin if full of leaves.

Failing that, I'd think rear window leaking as the next one to check. When you say "mopping up", do you actually mean puddles, or just damp? A small amount of water can seem like a lot, but any 944 that lives outside will have a certain degree of moisture in it.

Other things to check are the ones you've mentioned: don't assume that because the boot or sunroof is dry that's not where water is getting in. You need to strip it out, sprinkle talc over the interior, and look for obvious water tracks to be sure, as water can travel a long way finding it's natural lowest point.

Check the doors, as well, The drains in the bottom can get blocked, and water gets in to the cabin. It's unlikely, though, as most people would spot three inches of water sloshing around in the doors!.

One of the most basic tests is to park the car on a slope to see if it improves. Most leaks are from the roof, but the next most likely would be the front bulkhead so parking downhill would cure the leak. Conversely, parking facing uphill will eliminate leaks from the rear, including the hatch seal, rear light sealing, or lack of the one-way grommets in the boot wells (although these would only cause condensation, not puddles in the rear floor).

 

[924nutter]

had similar on my first 944s. There was so much water getting in, a previous owner had apparently pierced the floor behind the driver's set with a garden fork. Turned out to be caused by a single 10 amp cable passing through an unsealed hole that had been drilled in the bulkhead for a Spakrite 2000 alarm/immob.

 

[eddieedmo]

ORIGINAL: keviar

Try removing the headlining behind the sunroof so you can see the rubber joining hose that connects the sunroof drains to the nylon tubing which goes to the drain outlets. If you now pour water down the sunroof drain you may see it seep through joining hose as it now so old it is full of tiny holes.

that was my problem.

Nick

 

[dirtydirtyharry]

ORIGINAL: Jinxy

Damn, still getting a wet floor behind passenger side seat, no where else is wet except here, ive tried my hardest to find out where it comes in, to no avail, cant be the rear lights, the boot is dry as a bone, cant be the roof rubber, dry as a bone, checked drain holes, all clear, shall I just give us & keep mopping it up ???

I was getting wet carpet behind the passenger seat. I explained the problem here...

http://www.porscheclubgbforum.com/tm.asp?m=793224&mpage=1&key=&#793480

You are best off taking the carpets out and getting a hosepipe on the car. If squirting water (for a five minute period) down the passenger side a-pillar results in water behing the passenger seat then it may well be the same problem I had.

 

[jmelhuish]

I had a dry boot area but puddles behind the drivers seat. Through a process of elimination I resealed the rear lights and the problem has now disappeared.

 

[912UK]

i'm still looking for my leak!

 

[tref]

Yeah, but you'll find it - I like your idea mentioned elsewhere of taping it up... that can be used to prove the leak is where you think it is nicely.

One other leak location I don't think I've seen mentioned here is the rear quarter windows - they used to be a regular cause of leaks in the rear footwells too.

Regards,

Tref.

 

[pauljmcnulty]

One other leak location I don't think I've seen mentioned here is the rear quarter windows - they used to be a regular cause of leaks in the rear footwells too.

Ahem. See post no. 3....[][]

I think there's a few points when looking for leaks. One is that there's probably more than one leak on a 944, and even the general level of moisture in the air at this time of year is high enough to mist them up nicely overnight. You also need to be pretty systematic and work your way around all of them, not assume the first leak is the one causing the problem, or thinking that it's going to be the point nearest the wet patch!

The roof is most common I guess, then rear hatch or front bulkhead. The trick of parking up or down a slope does eliminate front or rear leaks, or confirm both....[&:]

 

[912UK]

I have just put the heater in the back of the car so it's baking hot in there now and drying out at a fast rate of knots!

Oil fired so it's constant rather than dry hot air..

It's the rear floor behind the pass seat and the seat swab it's the part that is the most wet

now I saw a few drops coming from the vynal trim that is up on the roof that stretches from side to side it's like 3ft long 6" wide.. that type of trim it's warped which indicates it's been wet in the past for sure.

I am thinking that trick of looking at the tubes to see if they are leaking even though I have taped up the sun roof channels totaly?

going to work though it and get it dry as the seats are in such good nick.. I want to paint this car next year so it's got to be sorted..

Looking at the car I recon it's had some light bump on the front in it's past as nothing really lines up right and the bonnet is bent so I will have to work all that out in the summer.. might be worth adding some sort of body kit and why not as it is in bits LOl..

 

[912UK]

right I got an hour on this, this afternoon..

I took off the rear trim that stretches across the car just behind the sunroof..

3ft long by 6"'s

it then shows the gears and rod that open the sunroof and they are soaking wet!


this is now getting closer for sure.. I inspected the tube you mentioned guys and it's looking ,A ok in there.. it was not wet there..

 

[Ex Skyline]

Give Jon' Mitchell a shout. What he don't know about every aspect of every Porsche, just ain't worth knowing!! []

 

[912UK]

Is he on this site. ?

 

[pauljmcnulty]

Is he on this site. ?

Indie 9xx.

If you know the water is coming from the top, which it obviously is as gravity plays in to it, then we know it's the roof or top of the hatch.

The roof is simple: it sits in a gutter, with a seal, and is clamped tight by the two arms. If water gets past the seal, there are four drains in the gutter to take it out under the car. So, it's pretty straightforward to see what's going wrong.

With the roof out, is the gutter clogged with moss and dirt, and do all four drains flow clear? Does the seal look in reasonable nick, as they are old now and not expensive to replace. Does the roof clamp shut properly when you refit it: pushing it from the inside, does it move up and down at all?

Looking at the top of the rear hatch, is the seal tight all the way around? Use a piece of paper to check, it should be held firmly around the whole seal. Is the glass attached to the frame the whole way around? They are starting to come apart on a few cars, and that'll let water through.

I don't think the hatch is likely, though, if the wet is behind that long trim piece. The water will follow the body down, and come in through the pins, not at the top, or drip in to the boot. The only way for water to get in to that area from the hatch would be the four bolts that mount the hatch hinges to the shell: if these aren't obviously loose then I can't see significant leaks here.

That leaves the sunroof, so check all three elements of that and I'd bet it's one or more of them.

 

[Ex Skyline]

Yes he is. I had a couple of leaks on mine, water and exhaust fumes. Jon' went straight in and found them and, sealed them permanently [8D][]. Happy day's!!