Hi: Looking I found in a Colombian manual the procedure for fuel pressure measurement: I will quote as is.
- (Connect a pressure meter between the cold start valve and the lower chambers inlet port of the fuel distributor, disconnect the electrical connector in the electrohydraulic actuator and then activate the fuel pump. The pressure must be between 75 and 82 psi. If the pressure is low replace filter or system pressure regulator, if the pressure is high, the pressure is high. Variation of the pressure ..) The same has a lambda sensor so to do enrichment tests to see how it responds, and refrigerant temperature sensor, as seen is quite complex, it carries potentiometer in the air flow ..