Is there a technique for removing the plastic driver and passenger side kick panels? When I pry on them I can see a 3 pronged plastic fastener in the center which seems to be holding the whole piece on. Should I just use more force and pry out in this area?
Both sides leak during rainstorms near where the vacuum lines run by the front corners of the footwell.

They slide to the rear of the car to remove.

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1985 300 TD 448K
1984 300 TD 278K

1983 240D euro 240k
1994 f-250 idi turbo 330K
1986 f-350 IDI
1987 F-350 IDI

1985 JD 1050 4wd
1965 IH 3660

What car is it? W123?

I’d suspect a leaking windshield seal. I had a 1985 that leaked in those areas when it rained. The gasket looked ok but leaked both corners.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

I'll give that a try. It could be the windshield seal. There is also an area where the vacuum lines head down around the wheel well/ firewall where I can see a bunch of leaves and dirt but it is hard to get to to clean out or see if/where it is leaking.

It's a 1990 w124.

Have you checked the windshield gutter drains? Are the upper sections installed in the lower ones? Lower ones flowing correctly?

I’m interested in this too because I think my 91 300d has some water entry but not sure from where.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

Yes I cleaned out the top gutter, re inserted the down tube on one side, flushed both sides and they flow pretty well. I also took out the rubber grommet at the bottom and cleaned that. Cleaned the center drain screen too. I suppose it might be helpful now to run a hose into each one for a while to clean out any remaining sediment, but I think it's clean enough to flow.

I think the leak is somewhere else. I haven't cleaned the sunroof drains yet. It could be that, or the window seal, or something behind the wheel well surround or under the front quarter panel.

Do you have a decent idea of where it is coming in?

Can also be through a door if the vapor barrier is not adhered properly at the bottom. Or a bad door seal.

I would want to start with the sunroof drains, and check where they are draining to. They could be draining to a spot that then allows water entry. Can you post pictures of the drains and their exit locations?

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

Windshield leaks are not common on W124's. Windshield leaks on W123 are practically guaranteed.

A wet floor on a W124 is often due to plugged rocker drains and if let go long enough, rusted rocker panels.

Good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

I too am new to the w124. How does the water get into the rockers? It literally fills them and then it overflows through some rubber plug into the floorboards?

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)