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Home > Technical (L322) > Sloshing Water Sound Behind Dash???
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nikkolakko



Member Since: 30 Jul 2025
Location: FFM
Posts: 2

Germany 

Many thanks for these pictures, but can you post a bigger picture of the whole engine bay, and mark where exactly to drill the holes on each side? My L322 is a tdv6 version from 2003.

Post #722110 30th Jul 2025 8:59pm
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robanzac



Member Since: 07 Dec 2017
Location: New Zealand
Posts: 17

New Zealand 

Yep, will do
Give me a day or two Rob

Post #722112 30th Jul 2025 10:00pm
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nikkolakko



Member Since: 30 Jul 2025
Location: FFM
Posts: 2

Germany 

Thanks mate, it's driving me crazy. I take it you have also tried other alternatives like venting the coolant fluid with the heater on etc and I didn't work?

Post #722138 31st Jul 2025 3:07pm
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robanzac



Member Since: 07 Dec 2017
Location: New Zealand
Posts: 17

New Zealand 

I hope these photos help.
I only had occasional problems because 99% of the time it is parked in a shed.
But when I went away, for say a week or two, and it was parked outside, I would get the sloshing if there were consecutive nights of heavy overnight rain.
Back home in the shed, it would gradually die away, I assume through evaporation.
Anyway since doing this the problem has never come back.
And the slight rust around the hole I drilled a few years ago maybe suggests that a bit of moisture passes through it at times.

photo 1 - long shot of engine bay (V8 BMW here)
Photo 2 - stuff removed to allow heater air intake filter housing to be removed
photo 3 - heater air intake filter housing now removed (and sitting on top of radiator)
photo 4 - zooming in on the 6mm hole I drilled a few years ago
Photo 5 - close up of same









 Rob

Post #722157 1st Aug 2025 6:37am
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