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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Inlet manifold cbu cleaning



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      08-07-2019, 04:32 AM   #1
Tambohamilton
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Inlet manifold cbu cleaning

Anyone know anywhere in the UK with experience in cleaning the CBU out of plastic inlet manifolds? I've read about folk in the US/Canada having them soaked and ultrasonically cleaned, which sounds about the best thing for it.
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      08-08-2019, 06:39 AM   #2
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Sorry to not answer your direct question of knowing anywhere in the UK (which I don't), but it isn't too difficult to remove and do yourself. I did mine last year.

Are you looking at removing and wanting a company to clean it, or are you wanting a company to do everything?
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      08-08-2019, 07:59 AM   #3
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Just after someone to do the cleaning. I took it off last year and scraped at as much of the crud as I could get at with a screwdriver, but it definitely wasn't any sort of satisfactory job. Really needs a good clean internally, beyond where I could hit with a tool.

I've heard of folk jet washing theirs etc, but I think ultrasonic cleaning is the one.
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      08-08-2019, 10:27 AM   #4
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maybe get some parts cleaner or stroger and just get a tub and put it in,,seen a few different methods
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      08-08-2019, 10:54 AM   #5
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Yeah. Nothing that I sprayed on it before (carb cleaner, brake cleaner, contact cleaner, engine cleaner, etc) seemed to really touch it! I'll need to find something better. Anyone any suggestion on that? I saw someone in the US recommending a certain brand of degreaser, but it wasn't readily available over here.
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