CITROEN C5 2000 - Page 133

130
INJECTION
CHECKS : AIR SUPPLY CIRCUIT
Engine : 4HX
Vacuum pump.
- Connect the tool [1] on the vacuum pump (3).
- Start the engine.
- The vacuum should be 0.8 bar at 750 rpm.
Boost vacuum regulation electrovalve.
- Connect the tool [1] between the electrovalve (2) and the valve (1).
Compare readings with the values in the table below.
Boost pressure regulation valve.
- Connect the tool [1] on the valve (1). (Grey marking on pipe).
- Appy a vacuum of 0.8 bar. The rod "a" should move 12 ± 2 mm.
- Rod "a" should be moved 12 mm.
«Swirl» control electrovalve.
- Connect the tool [1] as an adaptor between the electrovalve (4) and the control diaphragm of the «Swirl» (5).
- Compare readings with the values in the table below :
«Swirl» control diaphragm.
- Connect the tool [1] on the control diaphragm of the «Swirl» (5).
- Apply a vacuum of approx. 0,6 Bar ; the pin (6) should be at the end stop, at «b».
Engine speed (rpm) Vacuum (Bar)
780 0.6 Bar
4000 0.25 Bar
Engine speed (rpm) Vacuum (Bar)
780 0.6 Bar
4000 0.25 Bar