tHANKSFOR YOUR ANSWERS.
hERE is a new picture.
The yellow electrical conecctor, to the left, is the line coming from the crank position sensor. It has 3 leads but I don't know what is the order to conect each one to the X11 test plug.
What is the importance of this sensor.? How to test it?
Tha Vacuum line to the right, is on of the two exits from the check valve.
The main vacuum line is coming from a double vacuum point on the head cilinder. The first vacuum line goes to the check valve with 2 exits. One of them is conecting to go down the AIR FLOW CONTROL and the another exit from the check valve is the lost vacumm line. The second vacumm line from the head goes directly down to the AIR FLOW METER too, close to the previuos conection.
I note that the double vacuum point on the head produces vacuum pressure only when increase the RPM, but not at idle.
What is this vaccum line lost?
What are the importance of this vacuum lines?