Rainwater leaks - standard locations?

[eeedelli]

Hi all,

For far too long, I've been putting up with rainwater getting in and making the carpets damp on my 1989 740 estate. (It's not the classic heater valve leak - already checked that.)

It seems to affect floorwells on both sides and, on the odd occasion, I've had a couple of drips fall from where the headlining meets the top of the windscreen when setting off on a journey but I suspect that might just have been coincidental condensation as it didn't carry on doing so even in heavy rain.

Last year, I tried running some silicone sealant around the top and sides of the screen after removing the chrome trim. I've had the scuttle panel off and checked for holes in the bulkhead. I can't see where it's getting in.

The fact that it affects both sides suggests it's somewhere that could run to either (or both) sides rather than something like a door seal which would affect just that side (unless both door seals have given up, though that seems unlikely, as the passenger side doesn't get that much use anyway.

Has anyone got any suggestions for standard locations to check? Is there somewhere that they always seem to go?

Winter is here and the heater on this particular car has always had a fairly restricted effect (especially compared with my 940 which is like an oven when on full) so it's often difficult to keep the screen clear with so much damp in there and I'm also concerned I'll have rotted the floor out if I don't get something sorted sooner or later!

Thanks,
David.