2004 DACIA SUPERNOVA check engine

ENGINE E7J-A-2/6010
10 - 29
ENGINE AND LOWER ENGINE UNITS
The axial bushes can have: 2.80 mm,
2.85 mm, 2.90 mm, 2.95 mm. The rod caps are m ounted and tightened
at 4.2 daNm.
To check:
-the horizontal play of the rods;
-the rotation of t he whole set.
To mount:
-the oi l-pump (c heck t he existence
of the c entri ng jacks); the screws are tight-
ened at 2.5 daNm;
-the pi nion and the c arrying c hain of
the oil-pump;
-the oil-seal ring on the front cap
(which is oi led), by means of t he MOT
550 device;
-the front cap of the crankshaft; the
w atertight-sealing is done with LOCTITE
518 (the girdl e must be 0.6 - 1mm thick);
-the oil-seal ri ng on no. 1 be aring -
by means of MOT 1129 - 01.
The bri m and the outer part of t he oil-
seal ring are oiled.
550
THE CYLINDER CRANKCASE
RE CO VERY ENGINE
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ENGINE E7J-A-2/6010
10 - 38
ENGINE AND LOWER ENGINE UNITS
DIS M O UNT ING
The oil in the engine is emptied.
The following are taken apart: - Motor-Propelling set frame;
- lower crankcase.
The screws for fixing the oil-pump on the crankcase are taken apart;
The carrying chain is taken off the oil-pump pinion;
The cap of the oil-pump is taken apart.
The play of the pinions in the oil-pump is checked.
R
E-MOUNT ING
The dismantling operations are done in the re verse order.
Motor-oil filling-up i s done.
The pressure of the oil at 80
o is checked:
idle mode: 1 bar
4000 rot/minute 3 bar Sc
rews for fixing oil-pum p 2.5
Sc rews for fixing oil-pum p cap 1 T
IG H TENING CO UP
LES (daNm)
OIL-PUMP ON THE CAR OIL-PUMP
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
The engine is set at the tuning point (see Chapter 10, pages 10-19);
The screw-nut of t he stretching runner i s loosened;
The distri bution belt is taken off.
R
E-MOUNT ING
A new distribution belt is mounted ( see Chapter 10, pages 10-33);
The tension in t he di stribution belt is checked and a djusted, by m eans of MOT.1505
device, at the value of 145-185 Hz.
The opera tions are done in the reverse order of those in the dismantling process;
The screws are tightened at the couple;
It is c ompulsory t o tighten the crankshaft pulley a t a 2 daNm couple plus a n angle of
68
o+/-6o;
The compressor pulley ( AC) is re-mounted;
The be lt of the alterna tor a nd that of the compre ssor are stretched, oberving the
values of the mounting tension:
Alternator: 263 Hz+/- 10%
Co mpressor: 222 Hz+/- 10%.
11 - 2
DISTRIBUTION BELT
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
SPECIAL TOOL- AND-CHECK SETS
MOT.1202-01 -”CLIC” collar-pincers
MOT.1505 -Device for measuring belt tension
MOT.484 -Device for jacket maintaining -Wrench for angular tightening
-Pincers for elastic collar
TIG H TENING CO UPL E S (daNm )
S crew-nut of stretching runner/pulley 5
Screw of crankshaft pulley 2+68
o+/-6o
Screws of pendular suspension stand 6.2
Screw-nut of hydro-elastic buffer 3.7
Wheel Screws 7.5
Co mbustion-head Screws 2+97
o+/-2o
To take apart :
-the connector of the induction coil;
-the fue l hoses (t he going- and re -
turn circ uit); -the connectors of the injectors;
-the plugs of the sparks;
-the induction coil.
11 - 3
CYLINDER HEA D FITTING
D
IS M O UNT ING
The car is placed on a two-column lift -
ing stand; The battery i s disconnected;
The cooling circuit is emptied at the
jack situated at the lower pa rt of the radia-
tor; The distribution belt is taken apart (see
Chapter Distri bution Belt);
The following are taken apart: -air-filter;
-the c onnector of the c lapper-posi-
tion potentiometer (1); -the acceleration cable;
-the connector of the atmosphe ric
pressure sensor (2);
-the co nnector of the step-by-step
engine (3); -the connector of t he air temperature
sensor (4) on the intake collector;
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
The hoses of the thermostat stand are
disconnected;
To take apart :
-the thermic screen;
-the exhaust collector;
-the alterna tor;
-the guide of the oil-l evel gauge;
To take apart :
-the combustion-head screws, ex-
cept the scre w corresponding to A po-
sition, which i s only loosened, then the
combustion-head is turned round the re-
maining screw; -the cylinder-head;
The ja cket -mainta ining MOT.484
device is mounted.
Check the plane of the c ylinder-head.
11 - 4
CYLINDER HEA D FITTING
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
RE-MOUNT ING
The plane of the fitting is cleaned and checked.
Mount the cylinder he ad with a new gasket.
The taking-apart opera tions are done in the reverse order.
The combustion-head is tightened ( see Chapter 10, pages 10-31).
The distri bution 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 HEA D FITTING
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ENGINE E7J-A-2/6012
FUEL MIXTURE
CH ARACTERISTICS
ENGINE
Car Gearbox Ty p e 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 poluan
i
Fuel
Type Index Mode CO(%) CO2(%) HC Lambda (minimum
(rot/min) (1) ppm l octanic number)
E7 J 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 t emperature over 80
oC and after stabilizing at 2500 rot/mi n for 30
seconds; then turn ba ck into idle mode and the level of fumes is measured. The water-tempera ture a nd air-t emperature sensors are type NTC (negative
temperature coefficient), and the vari ation of their re sistance as to temperature
has the following evolution:
T (0C ) 0 20 40 80 90
A ir-T sensor
11970 - 7470 4045 - 3060 1600 - 1315 - -
R (Ohm)
Engine T 8000 - 67 00 3000 - 2600 1300 - 1100 300 - 270 215 -200
sensor
R (Ohm)
12 - 1
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14E7J-A-2/60 ENGINE
ANTI-POLLUTION
RE-ASP
IRATION CONDITIONS
The canister-purging valve is controlled by pin 4 of the UCE injection, when : - water tempera ture > 50
oC;
- air tempera ture > 15
oC;
- the valve position outside idle position.
It is possible the reading of the RCO value ( opening cyclic ratio ) of the canister
purging valve, by means of the CLIP tester.
THE CHECKING OF THE CANISTER PURGING VALVE OPERATION
A non-operation of t he petrol vapors re-a spiration system may lead to the fuel c on-
sumption increase and to a unstable idling. It is necessary to check if the purging valve exit is correctly connected to the carbon
canister. Check also the piping condition between the canister and the fuel tank (sealing,
clogging on layout). PETROL VAPOURS-ASPIRATION
14 - 2
1. CO L LEC
TEUR ADMISSIO N
2. SOUPAPE PURG E
3. C ANI STER
4. RE SERVO IR
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