Hello all,
I have done digging on the subject and I’ve come to some of my own conclusions but some of the threads I’ve read are from as far back as 2008 so I’d just like some up to date clarification and advice.
I have a 2009 S6. The issues are the oil cap suction and throttle body leakage. I also have a rough start on cold morning but goes away within the first couple of minutes. This has never thrown a CEL yet however. I assume that may even just be carbon buildup.
I have quite a leak on the driver’s side throttle body. The passenger side may be leaking but I cannot tell.
https://youtu.be/8zwfuzLlLhU
The oil cap also has some decent suction.
https://youtu.be/vbJo7Rr6UyU
For the throttle body I’ve read of people just using silicone sealer and sealing it up with no issues.
The oil suction is more my worry. From what I’ve read a common thought is immediately PCV, I’m just wondering if there are other things that could be the culprit.
Any input would be much appreciated.
Thanks in advance.