INJECTION -> Petrol/LPG DUAL FUEL system for Your Citroen Xantia 4 Door Second Generation (1993-2002)

SAFETY REQUIREMENTS : PETROL/LPG DUAL FUEL SYSTEM  
ESSENTIAL : Special precautions should be taken when dealing with gas powered systems  
SAFETY REQUIREMENTS.  
Only personnel who have been specially trained to work with petrol/LPG DUAL FUEL vehicles are authorised to carry out repairs to the  
DUAL FUEL system.  
- Ensure that these qualified personnel are provided with acrylic-free overalls (risk of static electricity).  
In the event of a major gas leak  
- Isolate the vehicle in the open air, away from any buildings.  
- Call the emergency services (police and fire brigade) should the situation get out of hand.  
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SAFETY REQUIREMENTS : PETROL/LPG DUAL FUEL SYSTEM  
ALL TYPES  
PRECAUTIONS TO BE TAKEN BEFORE CARRYING OUT ANY REPAIR WORK  
Any work on a gas powered vehicle must be carried out in a ventilated  
area.  
Disconnect the battery negative terminal.  
Ensure the vehicle is connected to earth.  
Before removing the fuel tank or working on the gas circuit located  
downstream of the safety electrovalve (on the gauge valve), perform  
the following operations :  
- Close the safety electrovalve.  
- Switch the engine to use gas.  
Ensure the vehicle is kept away from the following hazards :  
- Wait for the engine to stop due to lack of fuel.  
- Sparks.  
- Flames.  
- Slow combustion (lit cigarette).  
After each operation, check that the circuit is sealed using one of the  
following systems :  
Drain the fuel tank using "flare" type material (following the  
instructions for this material) before performing one of the following  
operations :  
- Electronic detector .  
- Soapy water.  
- Any other leak detection product.  
- Remove the gauge valve.  
- Working on the fuel tank.  
Remove the fuel tank when the vehicle is to be subject to high tempe-  
ratures (above 50oC) (spray booth).  
Do not clean the engine compartment with a high pressure device and  
do not use detergents.  
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SPECIFICATIONS : PETROL/LPG DUAL FUEL SYSTEM  
ALL TYPES  
B1HPOQ4P  
B1HPOQ5P  
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ALL TYPES  
SPECIFICATIONS : PETROL/LPG DUAL FUEL SYSTEM  
1) Fuel tank  
6) Injectors and valves.  
- Capacity : 70 litres.  
- Location : in the engine compartment, under the air manifold.  
- Max. pressure : during tests / in operation : 30 bars / 20 bars.  
- Max. operating temperature : 50°C.  
7) Pressure sensor.  
- Location : in the boot.  
- Ssupply voltage : 5 volts.  
- Location : on the evaporator control valve support.  
2) Fuel gauge  
- Supply voltage : 12 volts.  
8) Temperature sensor 15°C.  
- Resistance : 0 to 15 ohms empty, 280 to 315 ohms full.  
- Location : on the gauge valve.  
- Location : on the control valve reheating circuit.  
9) LPG filter.  
3) LPG gauge valve.  
- Type : paper.  
- Location : on the fuel tank.  
- Replacement intervals: every 37,500 miles.  
- Location : on the evaporator control valve inlet union.  
4) Safety electrovalve.  
- Supply voltage : 12 volts.  
- Power : 8W.  
- resistance : 18 ohms.  
- Location : on the gauge valve.  
10) Supply electrovalve.  
- Supply voltage : 12 volts.  
- Power : 8W.  
- Resistance : 18 ohms.  
- Location : on the evaporator control valve inlet union.  
5) Filler orifice with safety valve.  
- Location : on the rear right wing.  
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ALL TYPES  
SPECIFICATIONS : PETROL/LPG DUAL FUEL SYSTEM  
11) Evaporator control valve.  
- Make : NECAM.  
- Typt : MEGA.  
Setting pressure - 2nd stage.  
- Setting pressure for a new evaporator control valve :  
- 970 ± 10 mb  
- Setting pressure for a used evaporator control valve :  
ESSENTIAL :  
- 960 ± 10 mb  
Before checking and setting the pressure, it is essential that you  
read through and follow closely BROCHURE : BRE 0332.  
12) Stepper motor  
- Location : on the distributor.  
Setting pressure - 1st stage.  
13) Distributor.  
- Location : on the evaporator control valve support.  
- Pression de réglage vaporisateur-détendeur neuf :  
1450 ± 50 mb.  
14) Distributor electrovalve.  
- Supply voltage : 12 volts.  
- Resistance : 25 ohms.  
- Pression de réglage vaporisateur-détendeur ayant déjto servi :  
1400 ± 50 mb.  
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