blazej01

So, I don't know if you guys remember I had misfire on 3 cylinders 1,2 and 5. Plugs and coils did not solve the problem, so I decided to pull IM and preform carbon cleaning. Once the IM was off, I noticed some plastic pieces on top of valves in cylinder number 1 only. One of them was jammed between valve and cylinder head, and the other was loose in there bouncing around. I don't know if it caused any damage to the valves, but I put some carb cleaner on top of the valves and it did not leak down to cylinder. So my guess is that everything is ok. Another weird thing was that that cylinder had no carbon build up what so ever. I don't know If I should investigate this further or just put everything back together and see how it runs. Kind of hard to see on the pictures but you can see what I have pulled up.




​​​​​​

ScottCNelson

You might fix your misfires by pulling out those broken flap pieces, but your flaps won't work properly without them and therefore, neither will your engine.

TFT

Audi intake manifold flaps and actuator. I just had to replace the intake manifold on my 2008 S8

blazej01

where is the cheapest place to get intake manifold?

ScottCNelson

https://www.audiusaparts.com/oem-par...old-07l133185m

blazej01

Just took my manifold a part and only one is broken at cylinder number.

PaulW

$1,500....OUCH!!!!!

TFT

I bought mine through Audiusa. Once I sent them a message I got an immediate callback and they expedited the shipping to the Audi dealership doing the installation.
As I stated in a previous thread the new manifold along with the carbon cleaning resulted in an enormous increase in horsepoweron the top end. I imagine there was an issue with the manifold when I bought the car.

blazej01

At what milage did you replace your manifold? Did you clean your injectors? I am debating if I should send it out.

TFT