RENAULT TWINGO 2009 2.G Engine And Peripherals Workshop Manual

13B-50
DIESEL INJECTION
Fuel temperature sensor: Removal - Refitting
C44, and K9K
13B
aTorque tighten the fuel temperature sensor (15
Nm).
aConnect the fuel temperature sensor connector.
II - FINAL OPERATION.
aConnect:
-the injector connectors for cylinders 3 and 4,
-the heater plug connectors for cylinders 3 and 4.
aRemove the protection on the alternator to prevent
fuel flowing out.
aConnect the battery ( (see Battery: Removal - Re-
fitting) ).
aStart the engine and check that there are no leaks.
aRefit the engine cover.
aUse the Diagnostic tool to check for an absence of
stored faults; deal with these and clear them as nec-
essary.

13B-51
DIESEL INJECTION
Injector leak flow: Check
K9K
13B
PIECES ET INGREDIENTS POUR LA REPARATION
Ingrédients :
-cleaning cloths,
-set of K9K blanking plugs (DELPHI injection).
CHECK
aRemove the front engine cover.aDisconnect:
-the diesel return pipes (1) on the injectors,
-the diesel return pipe (2) on the Venturi fitted on the
high pressure pump.
aFit the correct blanking plug on the Venturi. Special tooling required
Mot. 1711Kit for measuring the injector
fuel flow rate.
Equipment required
Diagnostic tool
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see 13B, Diesel injection, Diesel injec-
tion: Precautions for the repair, page 13B-1) .
121418
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to r un.
Note:
It is essential to fi t an appropriate blanking plug
to the Venturi to avoid depriming the diesel return
circuit.

13B-52
DIESEL INJECTION
Injector leak flow: Check
K9K
13B
aConnect four of the transparent pipes (3) of the
(Mot. 1711) onto the diesel injector return.
aInsert these pipes in the four graduated measuring
cylinders (4) of the (Mot. 1711).
aConnect the Diagnostic tool to the vehicle.
aFollow the instructions given (depending on the en-
gine suffix) (see Fault finding - tests)(MR 413, 13B,
Diesel injection).
aDisconnect the transparent pipes from the (Mot.
1711).
aRemove the transparent pipes from the graduated
measuring cylinder of the (Mot. 1711).
aEmpty the diesel fuel out of the graduated measur-
ing cylinders.
aConnect:
-the diesel return pipes on the injectors,
-the diesel return pipe to the Venturi attached to the
high pressure pump.
aReplace the faulty injector(s) (see ) .
aCheck that there are no fuel leaks.
aUse the Diagnostic tool to check for an absence of
stored faults; deal with these and clear them as nec-
essary.
aRefit the engine cover.
107637
Note:
If necessary, attach the graduated measuring
cylinder rail of the (Mot. 1711) to the bonnet.

13B-53
DIESEL INJECTION
Accelerometer: Removal - Refitting
K9K
13B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the front engine cover.
aRemove:
-the dipstick,
-the oil level dipstick nut (1) ,
-the oil level dipstick guide.
aPlug the oil level dipstick guide inlet opening on the
cylinder block.
aDisconnect the following connectors :
-the heater plugs,
-the injectors,
-the flow actuator,-the diesel temperature sensor.
aDetach the channel at (2) .
aMove the wiring away from the channel.
aRemove:
-the nut (3) from the channel,
-the neck. Special tooling required
Emb. 1797Socket (24 mm) for removal -
refitting of the clutch master
cylinder
Equipment required
Diagnostic tool
Tightening torquesm
accelerometer20 N.m
114527
121419

13B-54
DIESEL INJECTION
Accelerometer: Removal - Refitting
K9K
13B
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the accelerometer connector (4) .
aRemove the accelerometer (4) using the (Emb.
1797).
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the accelerometer.
aTorque tighten the accelerometer (20 N.m) using
the (Emb. 1797).
aConnect the accelerometer connector.
II - FINAL OPERATION
aRefit:
-the channel,
-the channel nut.
aPosition the channel wiring harness.
aClip on the channel.
aConnect the connectors of:
-the heater plugs,
-the injectors,
-the flow actuator,
-the diesel temperature sensor.aRemove the blanking cover which protects the oil
level dipstick guide inlet opening on the cylinder
block.
aRefit:
-the dipstick guide,
-the oil level dipstick nut,
-the dipstick.
aRefit the channel nuts.
aRefit the engine cover.
109939
Note:
When replacing the accelerometer, run the
appropriate command (see Fault finding repair
manual) using the Diagnostic tool in order to
carr y out the necessary programming.

13C-1
PREHEATING
Pre-postheating unit: Removal - Refitting
K9K
13C
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aDisconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).
aRemove:
-the front wheels (see Wheel: Removal - Refitting)
(35A, Wheels and tyres),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-the front bumper (see Front bumper: Removal -
Refitting) (55A, Exterior protection).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the pre-postheating unit connector (1) .aRemove:
-the pre-postheating unit nut.
-the pre-postheating unit (2) .
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the pre-postheating unit.
aConnect the pre-postheating unit connector.
II - FINAL OPERATION.
aRefit:
-the front bumper (see Front bumper: Removal -
Refitting) (55A, Exterior protection),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-the front wheels (see Wheel: Removal - Refitting)
(35A, Wheels and tyres).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
127896
127897

13C-2
PREHEATING
Heater plugs: Removal - Refitting
K9K
13C
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the front engine cover.
aUnclip the fuel supply pipes (1) from the right-hand
suspended engine mounting.
aMove the fuel supply pipes away from the right-hand
suspended engine mounting.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the heater plug connectors (2) .
aClean the edges of the heater plugs using a com-
pressed air nozzle to avoid any impurities getting
into the cylinders. Equipment required
compressed air nozzle
hinged wrench for heater plug
Tightening torquesm
heater plugs15 Nm
120045
127895
IMPORTANT
Wear goggles with side protectors for this opera-
tion.

13C-3
PREHEATING
Heater plugs: Removal - Refitting
K9K
13C
a
aLoosen the heater plugs (3) using a 10 mm long ra-
dio socket connected to a universal joint or a hinged
wrench for heater plug.
aUse a hose to unscrew the heater plugscompletely.
aRemove the heater plugs.
aBlock the plug wells on the cylinder head using clean
cloths throughout the removal operation.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRemove the protection on the openings of the plug
well(s) on the cylinder head.
aBolt without tightening the heater plugs using the
hose.
aTorque tighten the heater plugs (15 Nm).
aConnect the heater plug connectors.
II - FINAL OPERATION.
aFit the fuel pipes on the right-hand suspended en-
gine mounting.aClip the fuel supply pipes onto the right-hand sus-
pended engine mounting.
aRefit the engine cover.
127905
Note:
If the heater plugs jam, use the heater plug
removal tool (see ) (Technical Note 5197A, 06A,
Tools).

14A-1
ANTIPOLLUTION
Oil vapour rebreathing circuit: Descriptions
K9K
14A
I - PRESENTATION OF THE CIRCUIT
Operating phase A
Operating phase BOperating phase A :
-with the engine at low load, the vacuum in the air pipe
at the air filter box outlet is not sufficient to activate the
membrane of the oil vapour rebreathing valve, fitted
with a weighted spring. Oil vapours are aspirated in
large quantities due to the vacuum in the air pipe at
the air filter box outlet.
Operating phase B :
-At engine medium and high load, the vacuum in the
pipe at the air filter box outlet attracts the membrane
of the oil vapour rebreathing valve. The hole allowing
the oil vapours to pass through in large quantities is
therefore closed and the oil vapours are aspirated in
low quantities via a calibrated jet.
II - CHECK
To ensure the antipollution system works properly, the
oil vapour rebreathing circuit must be kept clean and in
good condition.
20965
20965-1
(P) Atmospher ic pressure
(1) Rocker cover
(2) Oil vapour recirculation pipe
(3) Oil vapour recirculation valve
(4) Air filter box outlet air pipe
(5) Turbocharger

14A-2
ANTIPOLLUTION
Fuel vapour recirculation circuit: Operating diagram
D4F or D7F
14A
D4F, and 772 – D7F
97393-1
(1) Inlet distributor
(2) Fuel vapour absorber bleed
solenoid valve
(3) Petrol vapour absorber
(4) Tank
(5) Fresh air vent
D4F, and 780 or 782
121923
(1) Inlet distributor
(2) Fuel vapour absorber bleed
solenoid valve
(3) Petrol vapour absorber
(4) Tank
(5) Fresh air vent
(6) Anti-retur n valve
(7) Turbocharger
(8) Air filter unit
(9) Air filter box air outlet pipe