Dacia SuperNova (engine E7J). Service manual — part 17

ENGINE E7J-A-2/60

11

UPPER AND FRONT ENGINE UNITS

R

E

-M

O UNTING

The plane of the fitting is cleaned and checked.
Mount the cylinder head with a new gasket.
The taking-apart operations are done in the reverse order.
The combustion-head is tightened (see Chapter 10, pages 10-31).
The distribution belt is mounted (see Chapter 10, pages 10-33);
It is mounted in the reverse order of the taking-apart process;
The filling-up and the airing of the cooling circuit is done (see Chapter “Filling-up
and draining”);
The rocker-arms are adjusted.

NOTE
At each operation requiring battery disconnection, when reconnecting, introduce

the radio code, which is written on the vehicle-buying invoice.

11 - 5

CYLINDER HEAD FITTING

ENGINE E7J-A-2/60

12

FUEL MIXTURE

CHARACTERISTICS

ENGINE

Car

Gearbox

Type Index Cylinder Stroke Cylinder

bore length volume

(mm) (mm) (cm3)

SupeRNova JH3-050 E7J A-2/60 75,8 77 1390 9,5/1

Check-ups in idle mood*

Motor

Emisii poluani

Fuel

Type Index Mode CO(%) CO

2

(%) HC Lambda (minimum

(rot/min) (1) ppm l octanic number)

E7J A-2/60 750+/50 0,5 14,5 100 0,97. Unleaded petrol
max min max . 1,03 (CO95)

(1) at 2500 rot/min the CO value must be max. 0.30%;

* For water temperature over 80

o

C and after stabilizing at 2500 rot/min for 30

seconds; then turn back into idle mode and the level of fumes is measured.

The water-temperature and air-temperature sensors are type NTC (negative

temperature coefficient), and the variation of their resistance as to temperature
has the following evolution:

T (

0

C) 0 20 40 80 90

Air-T sensor

11970 - 7470 4045 - 3060 1600 - 1315 - -

R (Ohm)

Engine T 8000 - 6700 3000 - 2600 1300 - 1100 300 - 270 215 -200
sensor
R (Ohm)

12 - 1

ENGINE E7J-A-2/60

12

FUEL MIXTURE

DENOMINATION

PARTICULARITIES

C

omputer

90-ways connector

Injection system

Multi-point sequential

Ignition

PINIS

R

W

Static with a double coil

Computer controlled ignition

R

A-B

1W

R

A-C

0,5 W

R

B-C

0,5 W

R

1-4

7+/-1KW
R

2-3

7+/-1KW

Detonation sensor

Piezoelectric type SAGEM

Tightening moment = 2 daNm

RPM SENSOR

ELECTRICFIL or SIEMENS

R = 200. ..270 W

Spark plugs

EYQUEM - type RFN 58 LZ

CHAMPION - type RC 87 YCL

Fuel filter

For EURO 96:
Attached under the vehicle in front of the fuel tank

Replacement on the occasion of the scheduled inspections
For EURO 00:
Into the fuel tank, attached on the fuel pump assembly.

It is not replaced separate.

Fuel pump

Immersed in the fuel tank
For EURO 96: - Flow: 1,3 l/min

- Pressure: 3 bars at 12V tension

For EURO 00:

- Pressure: 3,5 bars at 12V tension

Pressure controller

For EURO 96:
Pressure controller attached on the injection ramp
Controlled pressure: - 3 +/- 0,2 bars at zero depression

- 2,5 +/- 0,2 bari at a depression of 500 mbars

For EURO 00:
Mounted into fuel tank on the fuel pump assembly
Controlled pressure: 3,5 bars

Electric injectors

SIEMENS
R = 14,5 +/- 1 W la 20

0

C

+ 12 V supply

Step by step engine

R

A-D

= 52 +/- 5 W

R

B-C

= 52 +/- 5 W

12 - 2

CHARACTERISTICS

ENGINE E7J-A-2/60

12

FUEL MIXTURE

12 - 3

CHARACTERISTICS

DENOMINATION

PARTICULARITIES

Valve potentiometer

Canister purging
valve

Oxygen sensor

Atmospheric
pressure sensor

idle

at maximum
acceleration

A - B

1300 W

1300 W

A - C

1500 W

2000 W

B - C

2000 W

1300 W

SAGEM
Supply tension= +12 V
R = 26 +/- 4W la 23

0

C

NGK
For EURO 96: an oxygen sensor attached on upstream of
catalyzer

Generated tension at 8500C:

- rich mixture 750 +/- 50mV
- salt mixture 150 +/- 50 mV

Heating resistance R

A -B

= 3 . ...15 W

For EURO 00: two oxygen sensors attached one on
upstream and the othder one on downstream of catalyzer

DELCO ELECTRONICS
Stopped engine – shows an atmospheric pressure of
950...1050 mbar
Idle engine - 330 +/- 40 mbar