Here is a quick update about the EATC, turning the lights on and off DOES WORKS to make the EATC screen work again but sometimes it takes 3-4 attempts, however as I turn the engine off the screen will remain off until I do the headlights trick again, so there is a straight relation between the EATC and the headlights switch.
Back to the engine problems, it seems that I can finally say that vacuum leak is gone for sure. I did the dry compression test and here the readings were:
Cylinder Stroke 1 Stroke 2 Stroke 3 Stroke 4
1 60 90 120 130
2 60 90 120 125
3 60 90 110 110
4 90 110 120 130
5 60 70 80 80
6 60 70 80 80
7 60 90 110 120
8 60 70 80 80
So that leaves me with 3 bad cylinders, according to the readings and my Hayness manual I think the problem is not on the valve seals but worn piston rings. I'll check the oil level until tomorrow to know how much oil is being burned if it's dropping too soon I better start looking for an engine to get rid of the valve seals problem too, that way I can kill two birds with one shot.
Best regards,
Oscar.