Query - under bonnet condensation.

[oxford_hippo]

Sometimes get condensation on the underside of the bonnet when I park it outside.

The boot ( luggage compartment ) carpet was taken out while ago - would that have done anything helpful to stop condensation.

What could cause air within the luggage compartment to get hot - so it forms condensation when it hits the cold surface fo the underside of the bonnet?

thanks for any ideas?
T[&:]

 

[sailor]

On the basis that you seem to have too much moisture inside the boot, perhaps the obvious answer may be a defective seal. However the floor drainage holes should each be filled with a rubber bung/drainage tube. Perhaps some are missing?


JohnC
993turbo

 

[Mark Elder]

This seems to be very variable depending on weather conditions (I think). I don't see any condensation for weeks, then suddenly I open the bonnet and streams of water pour down toward the back of the underside of the lid and run onto the carpet and elsewhere[]

I have the carpet in mine if it makes you feel any better.

 

[colt]

It's a very well known air cooled 911 problem , Most of the time there is no problem with the seals or drains. I use a 1kg dessicant pack ,reusable by heating indoors for a week or two, to keep the moisture under control in the winter. If you have a couple or three then you always have one ready to go! It's a problem known only to those of us that don't keep our cars in a garage overnight.
Christian.............................

 

[nfearn]

I suffered from apparent condensation in the front boot area when I first bought my 993 but it turned out to be a very slightly fractured 90 degree "elbow" tube in the screenwash system. In my car it was the one that takes the water supply through the hard plastic grommet into the interior of the bonnet.

Since I replaced this I've had no issues with water in the boot irrespective of weather conditions. Prior to replacing it, I used to get what appeared to be condensation on the underside of the bonnet, but it was in fact the accumulated water from the very fine mist of water which was leaking out of the plastic elbow piece and spraying onto the underside of the bonnet and elsewhere. The effect is easy to check - just have someone operate the washers while you look under the bonnet watching for water where there shouldn't be any.

I hope that's helpful to someone.

 

[oxford_hippo]

thanks very much for the hints - a drain hole bung is missing from the boot floor, so will get a new one, and try some silca,
thanks,
T[&:]