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  1. #1
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    Deep cleaning a silver plastic intake manifold

    I’m wondering what product would be best to get an intake manifold in a 2004 VW R32 looking its best. The manifold is a composite material and I guess is painted silver, or perhaps it’s just that color composite.

    The car is 17 years old and I’m not sure if anything under the hood has ever really been cleaned. Simple green didn’t do a lot for me.

    Car is actually in the shop right now having timing chains done but will have it back soon so I can post photos of what I’m actually looking to clean. For now here’s some photos I found of what the intake manifold looks like:

    Deep cleaning a silver plastic intake manifold-ba6b8c3a-d1ab-475f-b8fc-92f5532970bc-jpgDeep cleaning a silver plastic intake manifold-6f18b39b-9339-4f19-8395-761a0d8c0ed7-jpg

  2. #2
    Director of Training Mike Phillips's Avatar
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    Re: Deep cleaning a silver plastic intake manifold

    What have you tried so far?

    If it were me I would keep it simple Simon. Start by washing with a good soap and brush. See what you get.

    If that' not clean enough then escalate the cleaning power with an APC or degreaser. If you're concerned, test product to the back area that is not as visible.

    Worst case scenario - re-paint with a quality high heat paint or shop for a replacement on eBay or Amazon.



  3. #3
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    Re: Deep cleaning a silver plastic intake manifold

    Quote Originally Posted by Mike Phillips View Post
    What have you tried so far?

    If it were me I would keep it simple Simon. Start by washing with a good soap and brush. See what you get.

    If that' not clean enough then escalate the cleaning power with an APC or degreaser. If you're concerned, test product to the back area that is not as visible.

    Worst case scenario - re-paint with a quality high heat paint or shop for a replacement on eBay or Amazon.


    I gave it a scrub with simple green but it didnít help a ton.

  4. #4
    Junior Member Mr_Anderson's Avatar
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    Re: Deep cleaning a silver plastic intake manifold

    If it's really oily, seems like the best thing to get oil off is another petrochemical. Maybe some kerosene, or WD-40? Or have you tried any plastic cleaner, or plastic polish?

  5. #5
    Super Member 2black1s's Avatar
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    Re: Deep cleaning a silver plastic intake manifold

    My guess is that after the cleaning that you have already performed anything left is staining that you won't be able to remove. You can try rubbing problem areas with a rag & solvent such as mineral spirits but it probably won't do anything significant.

    I'd say your choices are to leave it as is or paint it as Mike suggested.

  6. #6
    Super Member Tasmania's Avatar
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    Re: Deep cleaning a silver plastic intake manifold

    If you have the money to spare get it sand blasted back then a re paint
    freshen the engine bay and make that 3.2 L sing

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