1995 RENAULT MEGANE SCENIC engine

TOP AND FRONT OF ENGINE
Cylinder head gasket
11F8Q ENGINE
Release the cylinder head by separating the lower
part of the inner camshaft housing; do this wi-
thout pivoting the cylinder head, as it is centred
by 2 dowels (C).
99173-1R
Use a syringe to remove any oil in the mounting
holes for the cylinder head.
This is necessary to ensure the bolts can be tighte-
ned correctly.
Protect the pipe bringing oil up so that foreign
bodies are not allowed to enter the oilways brin-
ging oil into the cylinder head.
If this recommendation is not observed there is a
risk that the oilways may become blocked and da-
mage may occur rapidly to the camshaft.
CLEANING
It is very important not to scratch the gasket faces
of parts in aluminium.
Use Décapjoint to dissolve any gasket remaining
on the metal.
Apply the product to the area to be cleaned; wait
approximately ten minutes then remove using a
wooden spatula.
99180S
Gloves should be worn during this operation.
11-25

TOP AND FRONT OF ENGINE
Cylinder head gasket
11F8Q ENGINE
CHECKING THE GASKET FACE
Use a straight edge and a set of shims to check for
gasket face deformation.
Maximum bow 0.05 mm.
The cylinder head may not be re-ground.
99181S
DETERMINING THE THICKNESS OF THE GASKET
Checking piston protrusion
Clean the piston crowns to eliminate any deposits.
Turn the crankshaft in the normal operating direc-
tion by one turn to bring piston No. 1 close to
TDC.
Place tool Mot. 252-01 on the piston.
Fit tool Mot. 251-01 with a dial gauge to the pres-
sure plate Mot. 252-01. The pin of the dial gauge
should be touching the cylinder block; determine
the TDC for the piston.
NOTE : all measurements should be made in the
longitudinal axis of the engine to eliminate errors
due to piston tilt.
99173R
Measure the piston protrusion.
ONLY TAKE INTO ACCOUNT THE DIMENSION FOR
THE PISTON WITH THE MAXIMUM PROTRUSION
For a maximum piston protrusion :
- less than 0.868, use a gasket marked by a tab
with 2 holes,
- between 0.868 and 1.000, use a gasket marked by
a tab with 1 hole,
- greater than 1.000, use a gasket marked by a tab
with 3 holes.
11-26

TOP AND FRONT OF ENGINE
Cylinder head gasket
11F8Q ENGINE
REFITTING(special notes)
Fit the gasket selected previously. It is centred by 2
dowels (C).
99173-1R
Positions the pistons halfway in the barrels to
avoid any contact with the valves when the cylin-
der head is tightened.
Centre the cylinder head on its dowels.
Lubricate under the heads and the threads of the
mounting bolts.
Tighten the cylinder head (see section 07- tighte-
ning the cylinder head).
Refitting is the reverse of removal.
Refit the timing belt.
Fill and bleed the cooling circuit (see section 19).
11-27

FUEL MIXTURE
Specifications
12
Vehicle GearboxEngine
Type SuffixBore
(mm)Stroke
(mm)Capacity
(cm
3)RatioCatalytic
converterDepollution
standard
BA0E JB1 E7J 764 75.8 77 1 390 9.1/1 C44 EU 96
* For a coolant temperature greater than 80°C and at stable engine speed of 2 500 rpm for
approximately 30 seconds.
** For legislative values, refer to specification for individual country.
*** Compatible with OR 91 unleaded.
Temperature in °C (± 1°) 0 20 40 80 90
Air temperature sensor
Type CTN
Resistance in Ohms7 470
to 11 9703 060
to 4 0451 315
to 1 600--
Coolant temperature sensor
Type CTN
Resistance in Ohms-3 060
to 4 0451 315
to 1 600300 to 370 210 to 270
Engine
Type SuffixTests carried out at idle speed*
Engine
speed
(rpm.)Emission of pollutants **
CO (%) CO
2 (%) HC (ppm) Lambda (λ)Fuel ***
(minimum octane
rating)
E7J 764 750±500.3
maximum14.5
minimum100
maximum0.97<λ<1.03 Unleaded (OR 95)
Engine
Type SuffixComputer Supplier’s No.Homologation
No.RENAULT No.
(G70*)
E7J 764 SIEMENS 35 tracks (FENIX 3) S 111 730 108 B 77 00 864 451 77 00 874 461
12-1

FUEL MIXTURE
Specifications
12
Vehicle GearboxEngine
Type SuffixBore
(mm)Stroke
(mm)Capacity
(cm
3)RatioCatalytic
converterDepollution
standard
BA0F Manual K7M 702 79.5 80.5 1598 9.7/1 C45 EU 96
BA0F
AutomaticK7M 703 79.5 80.5 1598 9.7/1 C45 EU 96
BA0L Manual K7M 720 79.5 80.5 1598 9/1 C45 EU 96
* For a coolant temperature greater than 80°C and at stable engine speed of 2 500 rpm for
approximately 30 seconds.
** For legislative values, refer to specification for individual country.
*** Compatible with OR 91 unleaded.
Temperature in °C (± 1°) 0 20 40 80 90
Air temperature sensor
Type CTN
Resistance in Ohms7 470
to 11 9703 060
to 4 0451 315
to 1 600--
Coolant temperature sensor
Type CTN
Resistance in Ohms-3 060
to 4 0451 315
to 1 600300 to 370 210 to 270
Engine
Type SuffixTests carried out at idle speed*
Engine
speed
(rpm.)Emission of pollutants**
CO (%) CO
2 (%) HC (ppm) Lambda (λ)Fuel ***
(minimum octane
rating)
K7M702
720720±500.3
maximum14.5
minimum100
maximum0.97<λ<1.03 Unleaded (OR 95)
K7M 703 750±500.3
maximum14.5
minimum100
maximum0.97<λ<1.03 Unleaded (OR 95)
Engine
Type SuffixComputer Supplier’s No.Homologation
No. RENAULT No.
(G70*)
K7M 702 SIEMENS 55 tracks (FENIX 5) S 105 300 101 D 77 00 860 319 77 00 863 499
K7M 703 SIEMENS 55 tracks (FENIX 5) S 105 300 201 C 77 00 860 337 77 00 869 818
K7M 720 SIEMENS 55 tracks (FENIX 5) S 105 300 104 B 77 00 864 454 77 00 865 827
12-3

FUEL MIXTURE
Specifications
12
Vehicle GearboxEngine
Type SuffixBore
(mm)Stroke
(mm)Capacity
(cm
3)RatioCatalytic
converterDepollution
standard
BA0G Manual F3R 750 82.7 93 1998 9.8/1 C47 EU 96
* For a coolant temperature greater than 80°C and at stable engine speed of 2 500 rpm for
approximately 30 seconds.
** For legislative values, refer to specification for individual country.
*** Compatible with OR 91 unleaded.
Temperature in °C (± 1°) 0 20 40 80 90
Air temperature sensor
Type CTN
Resistance in Ohms7 470
to 11 9703 060
to 4 0451 315
to 1 600--
Coolant temperature sensor
Type CTN
Resistance in Ohms-3 060
to 4 0451 315
to 1 600300 to 370 210 to 270
Engine
Type SuffixTests carried out at idle speed*
Engine
speed
(rpm.)Emission of pollutants **
CO (%) CO
2 (%) HC (ppm) Lambda (λ)Fuel ***
(minimum octane
rating)
F3R 750 770±500.3
maximum14.5
minimum100
maximum0.97<λ<1.03 Unleaded (OR 95)
Engine
Type SuffixComputer Supplier’s No.Homologation
No. RENAULT No.
(G70*)
F3R 750 SIEMENS 55 tracks (FENIX 5) S 103 717 101 B 77 00 868 299 77 00 874 462
12-5

FUEL MIXTURE
Throttle body
12
E7J engine
PRESENTATION
94542R
1Air temperature sensor
2Fuel pressure regulator
3Fuel return to fuel tank
4Fuel supply
5Throttle opening motor
6Monopoint injector
Connector (A)
Injector and air temperature sensor operations
1 and 4Air temperature sensor
2+monopoint injector
3 - monopoint injector
Connector (B)
Idle speed regulation and low load switch
operations
1 + or -Motor feed
2 - or +Motor feed
3 and 4Low load switchConnector (C)
Throttle potentiometer operation
1Earth
2+ 5 V feed
4Throttle position information (voltage
changes between 0 and 5 V)
5Not used
The throttle body has two sections:
• The upper section is known as the injection
section (D).
• The lower section is known as the throttle
section (E).
NOTE : when the unit is removed, the two sections
are joined together by plastic clips. Squeeze the
end of the clips to separate the two sections.
94543-2R3
12-7

FUEL MIXTURE
Throttle body
12
E7J engine
REMOVAL
Remove the air filter.
Disconnect:
- connectors (A) (B) and (C),
- the fuel supply pipes (1) and return pipes (2),
- the accelerator control cable (3).
Remove the mounting bolts (4) and remove the
throttle body.
94544R
REFITTING
Replace the seals between the manifold and the
throttle body.
Reconnect:
- the fuel supply and return pipes, ensuring the
connectors are correctly clipped back together,
- the accelerator control and refit the air filter.
AIR TEMPERATURE SENSOR
REMOVAL
Remove the air filter.
Disconnect the connector.
Remove bolt (1) and lift cover (2).
Release the wires from mounting (3).
Remove the connector (4) after releasing hooks
(5).
94541R
REFITTING
Check the connectors are correctly clipped in.
12-8