2009 RENAULT TWINGO check engine

13A-17
FUEL SUPPLY
Fuel flow: Check
K4M
13A
I - PREPARATION OPERATION FOR CHECK
aEnsure you have a checking tool (Mot. 1311-01) and
a “T” union (Mot. 1311-08).
aAssemble the long hose of the test tool (Mot. 1311-
01) and the "T" union (Mot. 1311-08).
aDisconnect the fuel supply union on the injector rail.aConnect:
-the "T" union (Mot. 1311-08) on the injector rail,
-the fuel supply union to the "T" union (Mot. 1311-
08).
II - FUEL FLOW CHECK
aImmerse the hose in a 2000 ml graduated measur-
ing cylinder.
aRemove the cover from the engine compartment
connection unit. Special tooling required
Mot. 1311-01Pressure gauges and petrol
pressure measur ing unions.
Mot. 1311-08Union for taking fuel pres-
sure measurements .
Equipment required
graduated measuring cylinder
IMPORTANT
During this oper ation, be sure to:
-refrain from smoking or bringing red hot objects
close to the working area,
-be careful of fuel splashes when disconnecting the
union.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
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13A-18
FUEL SUPPLY
Fuel flow: Check
K4M
13A
aRemove the relay (1) .
aShunt the relay in order to supply the electric fuel
pump.
III - FINAL OPERATION
aRefit:
-the relay,
-the engine compartment connection unit cover.
aDisconnect:
-the fuel supply union on the "T" union (Mot. 1311-
08),
-the "T" union (Mot. 1311-08) from the injector rail.
aConnect the fuel supply union on the injector rail.
aSeparate the test tool (Mot. 1311-01) from the "T"
union (Mot. 1311-08).
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Note:
The flow reading should be 80 to 120 l/h.

13B-2
DIESEL INJECTION
Diesel injection: Precautions for the repair
K9K
13B
II - ADVICE TO BE FOLLOWED BEFORE ANY
OPERATION
1) Carry out the work in a clean working area and take
care to protect removed components from dust using
plastic bags which are hermetically-resealable, for ex-
ample.
2) Always order the following from the Parts Depart-
ment before carrying out work:
-a new set of blanking plugs, specific to the engine,
-enough lint-free cleaning cloths.
-one of the two cleaning products for fuel pipe
unions,
-the parts that are always to be replaced after each
removal operation, mentioned in the operational pro-
cedures specific to the vehicle (see related Workshop
Repair Manual).
3) Wear safety goggles fitted with side shields to pre-
vent the cleaning product from splashing the eyes.
4) Wear leaktight protective gloves (Nitrile type) to
avoid prolonged contact with the skin.
5) Before carrying out work on the injection system,
use plastic bags or clean rags, for example, to protect:
-the accessories and timing belts,
-the electrical accessories (starter, alternator, power-
assisted steering pump, sensors and electrical con-
nectors),
-the flywheel face.
III - INSTRUCTIONS TO BE FOLLOWED DURING
THE OPERATION
Wash your hands before and while carrying out the
work.
Replace leaktight protective gloves (Nitrile type) when
they are soiled or damaged.
All components removed from the injection system
must be stored in a hermetically sealed plastic bag
once they have been capped.
Reseal the bag hermetically, for example using adhe-
sive tape, even if the bag must be opened shortly after-
wards: ambient air can be a source of impurities.After opening the fuel circuit, the use of brushes, clean-
ing agents, air blow guns, rifle-type brushes or stan-
dard cloths is strictly prohibited: these items are likely
to allow impurities to enter the system.
When replacing a component with a new one or when
refitting it after storing it in a plastic bag, do not unpack
it until it is time to fit it on the vehicle.
IV - CLEANING
There are currently two procedures for cleaning the
fuel circuit before opening it in order to carry out work in
the workshop.
These procedures enable the fuel circuit to be cleaned
to prevent contamination from entering: they both have
the same end result and neither is preferred over the
other.
1 - Cleaning using injector cleaner
Clear the access to the unions that need opening, fol-
lowing the work procedures specific to the vehicle (see
the relevant Workshop Repair Manual).
Protect sections which are sensitive to fuel leaks.
Pour the injector cleaning agent into a container which
is free from impurities.
Dip a clean brush, which is not shedding bristles, into
the container of injector cleaning agent.
Clean the unions carefully using the brush and the in-
jector cleaning agent.
Blast the components that have been cleaned with
compressed air (tools, workbench, and also parts,
unions and around the injection system). Check that no
bristles from the brush have come away and that the
area is clean.
Wipe the sections that were cleaned with fresh clean-
ing cloths.
Open the circuit at the unions and immediately fit the
relevant blanking plugs. Note:
When using leather protective gloves, wear a pair of
leaktight protective gloves (Nitrile type) over the top.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.

13B-21
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
aPosition the engine at Top Dead Centre. The cam-
shaft pulley hole (15) should be opposite the cylinder
head hole (16) .
aInsert the (Mot. 1430) (17) in the camshaft pulley
hole and in the cylinder head hole to check that the
engine is correctly positioned at top dead centre.aRemove the (Mot. 1430) once the engine is in posi-
tion.
aFit the (Mot. 1606) (18) on the cylinder head.
aImmobilise the high pressure pump pulley using a
clé de 32 mm then remove the nut (19) from the pul-
ley.
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Note:
Never run the engine in the opposite direction to
that of normal operation.
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Note:
If necessary, turn the engine slowly to adjust the
position of the (Mot. 1606) on the high pressure
pump pulley teeth.

13B-24
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
aRefit the lower timing cover.
aRefit the accessories belt (see 11A, Top and front
of engine, Accessories belt: Removal - Refitting,
page 11A-3)
aRefit:
-the upper timing cover,
-the camshaft position sensor (see 13B, Diesel in-
jection, Camshaft position sensor: Removal -
Refitting, page 13B-14) ,
-the right-hand suspended engine mounting (see
19D, Engine mounting, Right-hand suspended
engine mounting: Removal - Refitting, page
19D-13) .
aRemove the blanking plugs.
aRefit a high pressure pipe between the pump and
the rail (see 13B, Diesel injection, High pressure
pipe between pump and rail: Removal - Refitting,
page 13B-35) .
aConnect the diesel return pipe to the venturi fitted to
the high pressure pump.aRefit:
-the fuel filter mounting,
-the fuel filter (see 13A, Fuel supply, Fuel filter:
Removal - Refitting, page 13A-4) .
aRefit:
-the engine tie-bar (see 19D, Engine mounting,
Lower engine tie-bar: Removal - Refitting, page
19D-18) ,
-the engine harness channel.
aFit the engine wiring on the engine wiring channel.
aClip on the engine wiring channel.
aConnect to the high pressure pump:
-the diesel supply pipe,
-the diesel return pipe to the diesel filter.
aClip on the high pressure pump pipes.
aRemove the protection on the alternator to prevent
fuel flowing out.
aConnect the connectors of:
-the diesel temperature sensor,
-the flow actuator,
-the injectors,
-the heater plugs.
aRemove the blanking cover which protects the oil
level dipstick guide inlet opening on the cylinder
block.
aRefit:
-the dipstick guide,
-the dipstick,
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aPrime the fuel circuit with a manual priming pump
until the disconnected pipes are filled with fuel; if
necessary, bleed the fuel filter (see 13A, Fuel sup-
ply, Fuel filter: Removal - Refitting, page 13A-4) .
aCheck that there are no fuel leaks.
aConnect the battery (see ) (80A, Battery). K9K, and 740
19659
Note:
Make sure that the tab (23) is positioned oppo-
site the mark (24) .

13B-25
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
aCheck the high pressure circuit (see 13B, Diesel in-
jection, High pressure pipe: Check, page 13B-34)
.
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.
REPLACING THE HIGH PRESSURE PUMP
aIf replacing the high pressure pump, reprime the die-
sel circuit using the Diagnostic tool.
aConnect the Diagnostic tool to the vehicle.
aConnect to the diesel injection computer.
aRun command AC212 « NEW PUMP CHAMBER
FILLING » (see Fault finding - Replacement of
components) (13B, Diesel injection).
aFollow the instructions on the Diagnostic tool until
the command is completed.
aStart the engine.
aIf the engine does not start or if the startup sequence
is interrupted:
-switch off the ignition,
-wait 30 seconds,
-restart the engine.
aUsing the Diagnostic tool, clear any faults stored in
the diesel injection computer.Note:
Never start the engine until the pump has been
reprimed.
Also comply with the operation instructions pro-
vided to prevent the high pressure pump from
being damaged internally, due to running with no
load and no diesel lubrication.
Note:
The starting phase may last up to 20 seconds.

13B-30
DIESEL INJECTION
Flow actuator: Removal - Refitting
K9K
13B
aFit the high pressure pump pipes.
aConnect to the high pressure pump:
-the diesel fuel supply pipe,
-the diesel return pipe.
aAttach the high pressure pump pipes.
aRemove the protection on the alternator to prevent
fuel flowing out.
aConnect the connectors:
-the heater plugs,
-the injectors,
-the flow actuator,
-diesel fuel temperature sensor.
aRemove the blanking cover protecting the dipstick
guide inlet orifice on the cylinder block.
aRefit:
-the dipstick guide,
-the dipstick guide nut,
-the oil level dipstick.
aRefit the neck nuts.
aPrime the fuel circuit with a manual priming pump
until the disconnected pipes are filled with fuel; if
necessary, bleed the fuel filter (see 13A, Fuel sup-
ply, Fuel filter: Removal - Refitting, page 13A-4) .
aConnect the battery (see ) (MR 411, 80A, Battery).
aCheck that there are no fuel leaks.
aCheck the high pressure circuit (see 13B, Diesel in-
jection, High pressure pipe: Check, page 13B-34)
.
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.

13B-33
DIESEL INJECTION
Venturi: Removal - Refitting
K9K
13B
aPrime the fuel circuit using the manual priming pump
(4) until the disconnected pipes are filled with fuel
(automatic degassing).
aCheck that there are no fuel leaks.
aStart the engine.
aCheck that there are no fuel leaks.
aRefit the engine cover.
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