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

SAFETY REQUIREMENTS : HDi DIRECT INJECTION SYSTEM  
XANTIA - SYNERGIE  
Engines : RHZ - RHY  
SAFETY REQUIREMENTS  
Preamble.  
All interventions on the injection system must be carried out to conform with the following requirements and regulations :  
- Competent health authorities.  
- Accident prevention.  
- Environmental protection.  
WARNING : Repairs must be carried out by specialised personnel informed of the safety requirements and of the precautions to be taken.  
Safety requirements.  
IMPERATIVE : Take into account the very high pressures in the high pressure fuel circuit (1350 bars), and respect the requirements below :  
- No smoking in proximity to the high pressure circuit when work is being carried out.  
- Avoid working close to flame or sparks.  
Engine running :  
- Do not work on the high pressure fuel circuit.  
- Always stay clear of the trajectory of any possible jet of fuel, which could cause serious injuries.  
- Do not place your hand close to any leak in the high pressure fuel circuit.  
After the engine has stopped, wait 30 seconds before any intervention.  
NOTE : This waiting time is necessary in order to allow the high pressure fuel circuit to return to atmospheric pressure.  
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SAFETY REQUIREMENTS : HDi DIRECT INJECTION SYSTEM  
XANTIA - SYNERGIE  
Engines : RHZ - RHY  
CLEANLINESS REQUIREMENTS.  
Preliminary operations  
IMPERATIVE : The technician should wear clean overalls.  
Before working on the injection system, it may be necessary to clean the apertures of the following sensitive components : (refer to corresponding  
procedures).  
- Fuel filter.- High pressure fuel pump.  
- High pressure fuel injection common rail.  
- High pressure fuel pipes.  
- Diesel injector carriers.  
IMPERATIVE : After dismantling, immediately block the apertures of the sensitive components with plugs, to avoid the entry of impurities.  
Work area.  
- The work area must be clean and free of clutter.  
- Components being worked on must be protected from dust contamination.  
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