Please need your helps (excuse my American langage faults).
. 996 not drived during few years (old fuel) but engine started 1 or 2 times per year. I know it's not a good thing.
. O2 sensor not changed, this is only default appear on PIWI (I have to remove it).
I have an unstable idle and some vibs grow up when engine is hot.
Some vibs before I added new fuel (I had some of water condensation from 2 exhaust on short time):
https://www.youtube.com/watch?v=vjmJlleyFBU
https://www.youtube.com/watch?v=e6-9tBOTWLY
Around 85°C engine wants stop, if start to drive it, like muffled.
The idle is always very low when engine is hot (around 550-600rpm by 85°c. But idle is correct under 80°C around 750-850rpm and 900-1000rpm if 40°C).
Since I added NEW FUEL there are less vibs (around 30-35%) and no more water condensation in exhaust. But problem of idle and vibs are still present.
Do you hear something wrong in video (After new fuel) :
1- Cold Engine
https://www.youtube.com/watch?v=eMoMk8mRxlM
2- Engine starts vibs around 50°C
https://www.youtube.com/watch?v=sH-Q0giwjoE
3- Engine Hot:
https://www.youtube.com/watch?v=AXnNkJIo2gQ
I have read the precious article about O2 sensor, and I am pretty sure I have to remove the old one. But do you hear something wrong as Variocam problem or Timing Chain ?
Many thanks - Yves