oily intake manifold bottom
2 Attachment(s)
Hello everyone,
I've been following the forum since 2005, and since then owned two 2.8 A4s and one A6 2.7T (6sp. manual, GIAC, K&N...) The question I have is about my current A6 2.7. I just replaced the auxiliary water pump, and noticed that the intake bottom is slightly covered in oil. Everything underneath the intake looked OK at a first glance, so I was wondering what are the usual suspects in this case? I'm probably missing something... Picture1: oily intake bottom Picture2: lifted intake Best, Milo. |
i have 1986 ford f-150 i noticed the same thing, but mine is carburated. i think it might be a pcv valve sucking in oil?
Originally Posted by kaplar
(Post 24232843)
Hello everyone,
I've been following the forum since 2005, and since then owned two 2.8 A4s and one A6 2.7T (6sp. manual, GIAC, K&N...) The question I have is about my current A6 2.7. I just replaced the auxiliary water pump, and noticed that the intake bottom is slightly covered in oil. Everything underneath the intake looked OK at a first glance, so I was wondering what are the usual suspects in this case? I'm probably missing something... Picture1: oily intake bottom Picture2: lifted intake Best, Milo. |
The turbo naturally causes oil residue and buildup in the intake. From the look of it, its using the intake temp sensor as a drain, lol. I would replace the o-ring on the temp sensor.
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Thanks for the tips guys! Both the temp. sensor o-ring and the PVC valve make sense.
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