1995 RENAULT MEGANE SCENIC engine

99238R1
FUEL SUPPLY
Fuel gallery
13
Throttle body mounting bolt on manifold 2
Fuel gallery mounting nut 1
TIGHTENING TORQUES (in daN.m)
REMOVAL
Disconnect the battery.
Remove the acoustic tie bar.
Disconnect:
- the air temperature sensor (1),
- the pressure sensor (3),
- the throttle potentiometer (4),
- the cylinder reference sensor (6),
- the fuel vapour recirculation pipe (11),
- the brake servo vacuum pipe (10),
- from the manifold, the pressure sensor
vacuum pipe (7).
Slacken the clip mounting the air sleeve to the
throttle body.
Remove the three nuts mounting the air filter.
99213R1
Remove the filter and the air sleeve.
Disconnect:
- the oil vapour rebreathing pipe (9),
- the coolant temperature sensor (2),
- the idle speed regulation solenoid valve (5). F3R engine
13-5

FUEL SUPPLY
Fuel gallery
13
Remove the four bolts mounting the throttle
body (do not disconnect the coolant hoses which
warm the throttle body).
Remove the heat shield between the throttle
body and the manifold.F3R engine
99239-1R
Unclip the wiring and the pipe mounted on the
manifold and tilt the assembly towards the
injection computer.
Disconnect the injectors.
Remove the wiring mounting.
Disconnect:
- the fuel supply pipe (17) on the flywheel end,
marked by a green ring,
- the return pipe to the fuel tank (18) at the
timing end, marked by a red ring,
- the vacuum pipe (19) for the fuel pressure
regulator.
99229R
Remove the fuel gallery by sliding it along the
inlet manifold.
99229-1S
Remove:
- the two fuel gallery mounting nuts,
- the earth strap (15).
13-6

FUEL SUPPLY
Fuel gallery
13
REFITTING
Ensure the two plastic spacers are present. They
should be located on the two gallery mounting
studs between the studs and the cylinder head.
Remove the seals bonded on the throttle body
heat shield, then renew them (they do not need
to be bonded when refitting). F3R engine
99215S
Refitting is then the reverse of removal.
13-7

96507R
FUEL SUPPLY
Injectors
13
F3R engine
The injectors fitted to this type of engine are of
the type "SIEMENS DEKA 2".
They are mounted on the fuel gallery.Each
injector is sealed by two O rings.
Fuel circulates permanently around the
circumference of the injector body. This fuel
washing prevents bubbles of fuel vapour forming
and aids warm starting.
INJECTOR DETAIL
1Connector
2O rings
3Upper O ring retaining circlip
4Filter
5Metal body
6Winding
IMPORTANT : there are no special notes for
removing the injectors. The fuel gallery must
however be removed beforehand since the fuel in
the gallery would enter the cylinder concerned.
When any operation involves removal of an
injector, new O rings and flat seals under the
gallery must be fitted.
NOTE : when refitting the upper seal, use the
tapered ring provided with the kit of seals.
13-8

FUEL SUPPLY
Pump flow
13
SPECIAL TOOLING REQUIRED
Mot. 1265 Pliers for removing quick release
unions
It is recommended to check the fuel pump flow
using the fuel return pipe connected to the sender
unit assembly.
97163R8
IMPORTANT
During this operation the following points must
be observed:
• Do not smoke and keep all heat sources away
from the working area.
• Take precautions to guard against fuel spray
due to the residual pressure in the pipes when
they are removed.
CHECKING THE PUMP FLOW
Lift the rear seat.
Remove the plastic cover.
Remove the clip (1).
Use tool Mot. 1265 to disconnect the fuel return
pipe (2) (marked by a red quick release union).
Connect an 8 mm semi-rigid pipe to the quick
release union and insert the other end of the pipe
into the 0-2000 ml measuring cylinder.
Shunt terminals (3) and (5) of the fuel pump relay
(located in the engine fuse box). In a period of
one minute the pump flow should be a minimum
of :
- 1.3 litres for F3R - K7M engines,
- 0.83 litres for E7J engines,
for a voltage of 12 Volts.
NOTE : when refitting, ensure the quick release
unions are correctly connected.
If the flow is low, check the feed voltage to the
pump (a drop of approximately 10% is caused for
a drop in voltage of 1 Volt).
EQUIPMENT REQUIRED
1 measuring cylinder 2000 ml
13-10

FUEL SUPPLY
Supply pressure
13
E7J engine
CHECKING THE FUEL SUPPLY PRESSURE
SPECIAL TOOLING REQUIRED
Mot. 1311-01 Fuel pressure test kit
Disconnect the fuel supply pipe (1) from the
throttle body and insert the0 - 10 bars pressure
gauge and the three way union from the test kit
Mot. 1311-01.
99089R
Shunt terminals (3) and (5) of the fuel pump relay
(B) in the engine connection unit (see diagram on
page 13-2).
98756R1
The pressure should be 1.06 bar.
Checking the pump safety valve
If the fuel pressure is correct, feed the fuel pump
and clamp the pipe with the two position valve
for a brief moment. The pressure should stabilise
at approximately 3 bars.
13-11

FUEL SUPPLY
Supply pressure
13
K7M engine
CHECKING THE FUEL SUPPLY PRESSURE
SPECIAL TOOLING REQUIRED
Mot. 1311-01 Fuel pressure test kit (with 0 ;+ 10 bars
pressure gauge included)
Mot. 1311-04 T piece (J union)
Mot. 1311-06 Tool for removing fuel pipes
Disconnect:
- the oil vapour rebreathing pipes and the fuel
vapour recirculation pipes,
99372S
- the fuel supply pipe using small section tool
Mot. 1311-06 (method described in section 13
"Fuel gallery").
99375R
Connect the T piece Mot. 1311-04 to the gallery,
then reconnect the fuel supply pipe to the T piece.
99376R
13-12

99366R
FUEL SUPPLY
Supply pressure
13
K7M engine
Fit the 0 ; 10 bars pressure gauge and the hose
Mot. 1311-01.
Shunt terminals (3) and (5) on the fuel pump relay
located in the engine fuse box (see diagram on
page 13-2).
The pressure should be 3 bars ± 0.2.
When a vacuum of 500 mbars is applied to the
pressure regulator, the fuel pressure should be
2.5 bars ± 0.2.
CHECKING THE PUMP SAFETY VALVE (under the
same conditions as previously)
Shunt terminals (3) and (5) of the fuel pump relay
(see diagram on page 13-2).
When the fuel return pipe is clamped briefly, the
pressure should stabilise between 4.5 and 7.5
bars.
13-13