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Old 03-07-2011, 11:12 PM   #1 (permalink)
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Extremely dirty intake manifold, suggestions on cleaning methods

So when I yanked off my intake manifold while I was in the process of replacing a head, I noticed that the epitome of a nasty intake manifold can be found on my truck. Have any of you noticed extreme oil/carbon build up on the inside of your manifolds? Is it recommended to clean it or just leave it like it is. My though is that it isn't effectively channeling the air( in one spot I swear 1/4" of crap has built up.

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Old 03-07-2011, 11:40 PM   #2 (permalink)
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Do you have an EGR on your truck? I noticed when I had an EGR there was a lot of buildup (still haven't cleaned it) but since I've installed my F intake minimal (to none) amount of oil is in the intake and my intercooler...

That crap doesn't clean up very well... I would suggest parts cleaner but that probably wouldn't do much of anything. Not sure if you can use engine cleaner on that or if it would even help.... I'm sure someone here has cleaned up the inside of their intake and will suggest something . Hopefully more then just elbowgrease lol

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Old 03-08-2011, 01:38 AM   #3 (permalink)
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For all the effort it would take to clean that all up, only to have to do it all over again the next time you pull the upper off and get that sick feeling all over, I would invest in an F upper and lower intake along with new gaskets. Problem solved.
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Old 03-08-2011, 08:23 AM   #4 (permalink)
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