2005 Citroen C4 warning

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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: 9HZ - 9HY
B1EP1E6D
Refit the screw (10).
Turn the crankshaft to bring the camshaft towards its pegging point.
Peg the camshaft at «c», using tool [2]
(oil the pegs).
WARNING: Do not press or damage the track of the engine speed sensor target (13).
Peg the crankshaft at «e», using tool [3].
Remove:
- The timing belt protector (13).
- The engine speed sensor (14).
Slacken the screw (15)of the tensioner roller, and keep it slackened using an allen
spanner at «d».
Detension the timing belt by pivoting the tensioner roller
(clockwise).
Remove the timing belt, starting with the coolant pump pinion.
Checks.
ESSENTIAL: Just prior to refitting, proceed to the checks as below.
Check:
- That the rollers and the coolant pump pulley turn freely
(without play and without tight spot).
- That there are no signs of oil leaks (at the crankshaft and camshaft seals).
- That there are no leaks of coolant fluid (at the coolant pump).
- That the track of the engine speed sensor target (15)is not damaged or scratched.
Replace any components that are defective
(if necessary).
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: 9HZ - 9HY
B1EP1E8C
Adjusting the timing belt tension.
Act on the tensioner roller (18)to align the marks «g»and «h», avoiding detensioning the
timing belt, using an allen spanner at «d».
Should this fail, repeat the operation to tension the timing belt.
Hold the tensioner roller (18).
Tighten the tensioner roller fixing nut to 3,7 ± 0,3 m.daN.
Check the position of the tensioner roller
(the alignment of the marks «g»and «h»should
be correct).
Remove tools [2] and [3].
Rotate the crankshaft six times
(clockwise).
IMPERATIVE: Never rotate the engine backwards.
WARNING: Do not touch or damage the track of the target of the engine speed sensor
(14).
Peg the crankshaft, using tool[3].
Check the position of the tensioner roller
(the alignment of the marks «g» and «h»should
be correct).
If this is not the case, repeat the operation to tension the timing belt.
Peg the camshaft pulley, using tool [2].
IMPERATIVE: Should it be impossible to peg the camshaft, check that the offset
between the camshaft hole and the pegging hole is not more than 1 mm. If the offset
is too great, repeat the operation.
Remove tools [2] and [3].
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: WJY
B1BP2FTC
Setting the timing.
Removing.
Disconnect the battery.
Remove the front RH lower splash-shield, using tool [1].
Remove the accessories drive belt
(see corresponding operation).Uncouple and plug the diesel fuel delivery and return hoses.
Support the engine, using a workshop hoist.
Remove the RH engine support.
Engage 5th gearto permit rotation of the engine.
Remove the upper cover (1).
Remove the intermediate cover (2).
Remove the lower cover (3).
WARNING: Refit the screw (4) equipped with a washer
(5 mm thick).
Rotate the front RH wheel to drive the engine in its normal direction of
rotation.
Bring the camshaft drive and injection pump pinions to their setting
points.
Position the peg [2]
(from underneath the vehicle).
Continue turning the engine until the peg [2]engages in the flywheel.
B1BP30BC
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
Uncouple, plug and move aside, using tool [7], the fuel delivery pipe(2)and return
pipe (1).
Remove:
- Screws (3), (4)and (6).
- Screw (7).
- The upper timing cover (5).
WARNING: Refit screw (7) equipped with a spacer
(17 mm thick), tighten the
screw (7) to 1,5 ± 0,1 m. daN.
NOTE: The screw (7)is one of the screws securing the coolant pump and is there
for its sealing.
Put the gear lever in 5th gear.
Turn the road wheel to turn the engine in its direction of rotation.
Orient the camshaft pulley in the pegging position, use a mirror if necessary.
Peg the camshaft, using tool [5].
Peg the engine flywheel, using tool [3].
B1EP1A7CB1BP2H3CB1BP2H2CB1BP2R2C
XSARA - XSARA PICASSO
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INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Tools.
[1] Ø 10 mmlow pressure connector: 4215-T
[2]Pressure gauge for testing boost pressure: 4073-T.A Toolkit 4073-T
IMPERATIV: Respect the safety and cleanliness specific to high pressure diesel injection
engines.
Remove the air filter duct.
Link tool [1]in series, downstream of the injectors, between the fuel high pressure pump and the
fuel filter at «a»and «b».
WARNING: Any checking of pressure downstream of the fuel filter is prohibited.
Switch on the ignition.
Check the pressure :
Vacuum measured by the pressure gauge [2]:
Vacuum Observations
10 ± 0,5 cmHgEngine driven by the starter motor.
20 ± 0,5 cmHgEngine running under full load
60 ± 0,5 cmHgSupply circuit obstructed
(full tank strainer, piping, fuel filter)
B1CP0GFD
Engines: 9HX - 9HY - 9HZ
C4
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INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Tools.
[1] Ø 10 mm low pressure connector: 4215-T
[2] Pressure gauge for testing boost pressure: 4073-T.A Toolkit 4073-T
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel injection
engines.
Remove the air filter duct.
Link tool [1]in series, downstream of the injectors, between the fuel high pressure pump and the
fuel filter at «a»and «b».
WARNING: Any checking of pressure downstream of the fuel filter is prohibited.
Switch on the ignition.
ESSENTIAL: Check that the tool [2] is clean.
Check the negative pressure according to the table below:
Vacuum Observations
10 ± 05 cmhgEngine driven by the starter motor
20 ± 20 cmhgEngine running under full load
60 ± 05 cmhgSupply circuit obstructed
(full tank strainer, piping, fuel filter
B1BP2PHC
Engines: 9HZ - 9HY
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INJECTION
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Tools.
[1] Ø 10 mm low pressure connector: 4215-T
[2] Ø 8 mmlow pressure connector: 4218-T
[3]Pressure gauge for testing boost pressure: 4073-T Kit 4073-T
Connect the tool [1]between the booster pump and the fuel filter
(white mark at "a" on the fuel
supply pipe).
Connect the tool [2]downstream of the diesel injectors, between the high pressure fuel pump and
the fuel filter
(green mark at "b" on the fuel return pipe).
WARNING: Any check of pressure downstream of the fuel filter is PROHIBITED.
Checks on pressure: static.
- Switch on ignition.
For 3 seconds
(normal functioning):
- Fuel supply pressure shown by the pressure gauge [3] = 1.8 ± 0.4 bar.
- Fuel return pressure shown by the pressure gauge [3] = 0.5 ± 0.4 bar.
B1BP1TWD
Engines: RHY - RHZ
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INJECTION
CHECKING THE AIR SUPPLY CIRCUIT
B1BP33ZC
B1BP340C
Engine: RHR
B1BP341C
B1BP342C
Tool.
[1]Manual pressure-vacuum pump: FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel
injection engines.
WARNING: After switching off the ignition, wait 15 minutes before disconnecting
the battery
(to guarantee memorisation of the initialisations of the different ECUS).
Checking the vacuum source
(vacuum pump).
Connect the tool [1] on the take-off «a».
Start the engine.
The value should be: 1 ± 0,2.
Turbocharging pressure electrovalve.
Connect the tool [1]on the vacuum supply «b»of the electrovalve (1).
Start the engine.
The value should be: 1 ± 0,2.
Cold air circuit electrovalve.
Connect the tool [1]on the vacuum supply «c»of the electrovalve (2).
Start the engine.
The value should be: 1 ± 0,2.
Warm air circuit electrovalve.
Connect the tool [1]on the vacuum supply «d»of the electrovalve (3).
Start the engine.
The value should be: 1 ± 0,2.
C4
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