High pressure fuel pump — adjustment (Peugeot Partner I)

1. Conventional type tachometer, which works by reading pulses from the ignition system, cannot be used on diesel engines. To make the following adjustments accurately, you must purchase or rent an appropriate tachometer, or have the job done by a Peugeot/Citroen dealer or other qualified person.

2. Before making adjustments, warm up the engine to normal operating temperature. Check that the accelerator cable and high idle cable are correctly adjusted as described in paragraphs 11 and 4.

Lucas high pressure fuel pump

3. With the engine idling, position the correct thickness shim (see «Specifications») between the pump control knob and the damping prevention adjustment screw (pic. 9.3).



4. Press the manual stop lever all the way into the stop and hold it in place by inserting a 9.0 mm rod/drill through the hole in the high idle lever.

5. The engine speed must match the target value for stall prevention speed.

6. If adjustment is necessary, loosen the jam nut, turn the anti-plug adjustment screw as required, and tighten the jam nut.


7. Remove the pin/drill, remove the shim, and verify that the engine is idling at the correct engine speed.

8. If adjustment is necessary, loosen the locknut on the idle speed adjustment screw. Turn the screw as far as required and tighten the lock nut.

9. Move the pump control knob to increase the engine speed to approximately 3000 rpm, then quickly release the lever. The deceleration should last for 2.5-3.5 seconds, and the engine speed should drop approximately 50 rpm below the idle speed.

10. If the deceleration is too fast and the engine stalls, turn the stall prevention adjustment screw a quarter of a turn towards the control knob. If the deceleration is too slow causing insufficient motor braking, turn the screw a quarter of a turn away from the lever.

11. Tighten locknut after adjustment. Check the idle speed and adjust if necessary as described above.

12. With the engine running at idle, check the operation of the manual stop control by turning the stop lever clockwise (pic. 9.3). The engine should stop immediately.

13. If applicable, finally disconnect the tachometer.

14. After performing all the adjustments described above, check the adjustment of the position switch sensor «throttle valve», located on the pump control knob as described below.

15. Working with the end of the throttle cable that is on the high pressure fuel pump side, mark the cable 11.0mm from the edge of the cable sheath (pic. 9.20).

16. Ask an assistant to depress the accelerator pedal so that the mark on the cable is aligned with the edge of the cable sheath. When the cable is in this position, the contacts of the position sensor-switch «throttle valve» should barely open.


17. If adjustment is required, make sure the notch on the cable is still aligned with the edge of the cable sheath, then loosen the screw that secures the plastic actuator cam to the pump control knob (pic. 9.17).



18. Move the actuating cam until the switch contacts open. tighten screw

19. Finally, disconnect the tachometer and, if applicable, install the engine cover.

Bosch High Pressure Fuel Pump

20. Loosen the jam nut and back out the anti-plug adjustment screw just enough to release the pump control knob (pic. 9.20).




21. Start the engine and allow it to idle. If the idle speed is not correct, loosen the lock nut and turn the idle speed adjustment screw as required, then tighten the lock nut.

22. Insert a shim or feeler gauge of proper thickness between the pump control knob and the anti-plug adjustment screw.

23. The engine speed must match the value set as the stall prevention speed.

24. If adjustment is needed, loosen locknut, turn anti-plug adjustment screw as required. Tighten locknut.

25. Remove the shim or feeler gauge and allow the engine to idle.

26. Move the high idle lever all the way towards the flywheel end of the engine and check that the engine speed increases to the desired idle speed. If necessary, loosen the locknut and turn the damping prevention adjustment screw as far as required. Tighten locknut.

27. With the engine running at idle, test the operation of the manual stop control by turning the stop lever. The engine should stop immediately.

28. Finally, disconnect the tachometer.

29. After performing all the adjustments described above, check the adjustment of the position switch sensor «throttle valve», located on the pump control knob as described below.

30. Working with the end of the accelerator cable that is on the injection pump side, mark the cable 11.0mm from the edge of the cable sheath.

31. Ask an assistant to depress the accelerator pedal so that the mark on the cable is aligned with the edge of the cable sheath. When the cable is in this position, the contacts of the position sensor-switch «throttle valve» should barely open.

32. If adjustment is required, make sure the notch on the cable is still aligned with the edge of the cable sheath, then loosen the two screws securing the switch.

33. Rotate the switch housing until the contacts open and tighten the screws.