Fuel Pressure: Specifications

Fig. 1 Thermo time switch triggering time:

Control pressure, cold (immediately after starting) ..... see "WARM UP REGULATOR" in DIAGNOSIS AND TESTING.

Control pressure, warm 3.4 - 3.8 bar (49 - 55 psi)

System pressure 4.7 - 5.4 bar (68 - 78 psi)

Leak test (min. residual pressure) 3.0 bar accumulator:
after 10 min 2.6 bar (38 psi)
after 20 min 2.4 bar (35 psi)

Thermo-time switch activation period See Chart, Fig. 1.

Cold start valve:
min voltage 11.5 vdc
injection time see thermo-time switch chart

Auxiliary air reg min voltage 11.5vdc

Control pressure regulator:
min voltage 11.5 vdc
heater resistance 16 - 22 ohms

Fuel injectors:
opening pressure 3.5 - 4.1 bar (51 - 59 psi)
difference between injectors 0.6 bar (8.5 psi)

Air preheat thermostat
open below 20°C (68°F)
closed below 34°C (93°F)