INJECTION -> HDi direct injection system: Prohibited operations for Your Citroen Xantia 4 Door Second Generation (1993-2002)

XANTIA - SYNERGIE  
PROHIBITED OPERATIONS: HDI DIRECT INJECTION SYSTEM  
Engines : RHZ - RHY  
Cleaning.  
- The use of high pressure cleaners is prohibited.  
- Do not use compressed air.  
Fuel supply circuit.  
- Required fuel : diesel.  
WARNING : Do not use other fuels.  
Electric circuit.  
- Swapping injection ECUs between two vehicles will render it impossible to start either vehicle.  
- It is forbidden to supply a diesel injector with 12 volts.  
High pressure fuel pump.  
Do not separate the following components from the high pressure fuel pump (5) :  
- High pressure fuel pump third piston deactivator (3) (no replacement parts).  
- High pressure fuel regulateur (4) (no replacement parts).  
- Sealing ring (1) (no replacement parts).  
- High pressure outlet connector (3) (will cause a malfunction).  
B1HP12CC  
143  
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PROHIBITED OPERATIONS: HDI DIRECT INJECTION SYSTEM  
XANTIA - SYNERGIE  
Engines : RHZ - RHY  
High pressure fuel injection common rail.  
- Do not separate the connectors (7) from the common injection rail (6)  
(malfunction).  
Diesel injectors.  
WARNING: Diesel and ultrasonic cleaners are prohibited.  
Do not separate the following components from the diesel injector carrier (9) :  
- Diesel injector (8) (no replacement parts).  
- Electromagnetic element (11) (destruction).  
- Do not alter the position of the nut (10) (malfunction).  
- Do not separate the connector (12) from a diesel injector.  
- It is forbidden to clean the carbon deposits from the diesel injector nozzle.  
- Identification : Injector carrier.  
B1HP12DC  
There are 2 types of diesel injector carrier classed according to fuel flow.  
Identification by engraving or paint mark  
Injector carrier Engraving  
Paint mark  
Location  
Blue  
On the upper part of the  
coil near to the fuel return  
aperture  
Class 1  
Class 2  
1
2
Green  
Identification markings:  
IMPERATIVE: When replacing a die-  
sel injector carrier, order a compo-  
nent of the same class.  
- "a" : Supplier identification.  
- "b" : PSA identification number.  
- "c" : Class identification.  
(See repair manual).  
B1HP12EC  
B1HP16PC  
144  
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