engine DACIA SUPERNOVA 2004 Manual PDF

E7J-A-2/60 ENGINE13
PUMP SUPPLY
AIM:
To avoid accidental fire s owing to fuel leaks, which can be caused by an accident.
F
UNCT IO NING:
The shock-sensor lies in the engine compartment: it is mounted on the left-side shock-
absorber column. Du ring a shock, the ball of the sensor goes out of its slot, a nd thus achieves the breaking
of the electri c c ircuit be tween the relay commanding the petrol-pump and t he pe trol-pum p
itself.
PLACING B ACK THE SH OCK-SENSOR IN OPERAT IONAL MO DE
In order to resume the functioning of t he shock-sensor it will suffice to press its top,
and thus replace the ball in its former position. BREAKING FUEL SUPPLY
13 - 1
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E7J-A-2/60 ENGINE13
PUMP SUPPLY
CAU T ION!
When th e fuel circuit is opened, any
pe trol jet due to residue pressure must
be averted by mea ns of a gauze.
DIS M O UNT ING
The battery is disconnected.
The air-filter is taken out.
To disconnect:
-no. 1 fuel supply tube;
-no. 3 return fuel tube;
-no. 4 pressure-regulator tube.
Injection ramp Screws no. 2 are taken off.
The ramp is taken apart .
In orde r to t a ke a p ar t a n i n j ect o r,
w ithdraw c lamp no. 5 and then pull t he
injector.
RE-MO UNT ING
Replace t he t orric fittings at the base of
the i njectors (if t he i njector has been taken
apart as well a s the fitting at the end of t he
injector). For the supply junctions and the return
petrol tubes to be c orrectly coupled a click
must be heard the moment the coupling is
done.
The rest of the ope rations are done in
the reverse order a s that of the taking a part.
INJECTION RAMP
13 - 2
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E7J-A-2/60 ENGINE13
PUMP SUPPLY
LOCAT IO N
The petrol filter i s mounted under the car, in front of the petrol tank.
PETROL FILTER
13 - 3
REPLACE MENT
The replacement of the petrol filter i s recommended for a ny ove rhauling or for max.
20,000 kilometers.
CAUTION!
When the fuel circuit is opened, any petrol jet due to residue pressure
mu st be averted by means of a gauze.
DIS M O UNT ING
Before every taking-a part operation, prevent fuel from leaking.
Clamps no. 1 are pushed and the speedy junctions are disconnected.
Screw no. 3 is taken off and the petrol filter i s taken apart.
R
E-MOUNT ING
Ob serve the flowing direction of the fuel (which is shown by an arrow inscribed on
the filter).
Connect the speedy junctions back, by hand-pushing.
A correct coupling of the speedy junctions is ensured when there is a click at the
moment of the coupling.
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E7J-A-2/60 ENGINE13
PUMP SUPPLY
SPE CIAL DE VICE S
Tu ning pincers “CLIC”
It is recommendable to do the inspection
of the fuel pump-fl ow through t he re turn fue l
hose which is connected on the pump-level
transmitter set.
I
MPORTANT!
During these operations it is compul-
sory:
-not to smoke or handle incandes-
cent obje cts at the working place;
-to ensure protection from the petrol
projections due to residue pressure left in
the ch anneling during the taking-apart.
PUMP-FLOW INSPECTION
The re turn c hanneling no. 1 of the fuel
supply is disconnected.
A hose is connec ted on the junct ion
whose end i s introduced in a gra ded ve ssel
(from 0 to 2000 ml) Term inals 3 and 5 of H relay (lying in
the fuse-box of t he motor-compart ment) of
the petrol pump are shunted. Within a minute, the fl ow of t he pump
must be min. 1.3 lite r at the voltage of 12
V .
If the fl ow is not corre ct, the suppl y
voltage of the pump is inspected (t he flow
d ecreases by approx. 10% for a 1 V
voltage-decre ase).
13 - 4
1
PUMP FLOW
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E7J-A-2/60 ENGINE13
PUMP SUPPLY
SU PPLY PRESSURE CONTROL
SPECIAL DE V I C E S
MOT 1311-01 Control Kit for
petrol pressure
MOT 1311-04 J Junction
MOT 1311-06 Junction-disconnect
ing device
CAUTION!
When the fuel circuit is opened, any
petrol jet due to residue pressure must be
averted by means of a gauze.
The air-filter is taken apart .
The fuel supply hose is disconnected.
The MOT 1311-04 deri vation junction
is connected onto the ramp, then the fue l-
s upply channelling is re-connected onto the
junction.
Te rm inals no. 3 and 5 of the H fuel-pump
relay (l ocated in the engine fuse -box) a re
shunted.
Pressure must be 3+/-0.2 bar.
By applying a 500 mbar depression on
the pressure-regulator, the pre ssure of the
fuel must be 2.5+/-0.2 bar.
13 - 5
MOT. 1 311 -0 4 MOT. 1 311 -0 1
The manometer 0-10 bar, as well a s the
flexible hose MOT 1311-01 are mounted.
SU PPLY PRESSURE
MOT. 1 311 -0 6
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14E7J-A-2/60 ENGINE ANTI-POLLUTION
1. INTAKE CO L LE CTO R
2.CARB O N CANIST E R
3.DRAINING VALVE
4.CL APPE R BODY
R.CH ANNE L ING FRO M THE T
ANK
PETROL VAPOURS-ASPIRATION
FUNCTIONING SCHEMA
14 - 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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14E7J-A-2/60 ENGINE ANTI-POLLUTION
Check at idling if there is a depression, by fitting a pressure gauge (-3…+ 3 bars) at the
purging valve exit (B) t owards canister. Is there any depression?
YES - Set off the contact . Using a vacuum pump, apply a 500 mbars depression at
the (C ) connection of t he purging valve. The value of t he re ad depre ssion must not vary
more than 10 mbars within 30 seconds. If change i s more than 10 mbars, then purging
valve is damaged and must be replaced. Valve cleaning of small active carbon part icles
may be tried, by low-pressure compressed air blowing at the valve (B) connection NO - When conditions of purging valve controlling are accomplished and this one
does not open, c heck its control electric circ uit ( be tween UCE i njection pin 4 and purging
valve), from continuity or short-circuit point of view. The RCO value of the signal received by the purging valve from the computer, may be
read by means of the CLIP tester in PROL 23. The m inimal value is of 0.7% (corresponding
to the closed position of the purging valve).
P
LACING - DIS M O UNT ING
Both t he c arbon c anister and the draining va lve are mounted by means of a stand on the
lining of the right-side front wing of the car.
The channellings of the c anister and the electri c conector c ommanding the draining
valve are disconnected;
The sleeve for fixing the dra ining valve is taken off and the valve is taken apart .
The carbon canister is taken apart .
REMOUNTING
Perform in the reverse orde r the dismounting opera tions.
14 - 3
PETROL VAPOURS-ASPIRATION
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E7J-A-2/60 ENGINE16
16 - 1
ST ARTING AND CHARGING
IDE NT IFIC ATIO N
ENGINE ALTERNATOR INT E NSITY
E7J - A-2/60 VALEO A11 VI 87 75A
VALEO A13 VI 212 80A
INSPE CT IO N
After 15 minutes’ warming under a 13.5 V voltage.
ENGINE REVOLUTIONALTERNATOR 75 A ALTERNATOR 80A
RATIO (rot/min) (A) (A)
1000 46 54
2000 68 75
3000 71 80
4000 72 82
FUNCTIONING AND DIAGNOSING
These c ars are equipped with interna l ve ntilation alternators, with i n-built voltage re gu-
lator a nd on-board light indicator, which must work as follows:
-when the contact is on, the light is on;
-when the engine start s, the light goes out;
-if t he l ight is on again as t he engine is runni ng, then i t i ndicates a charging dysfunc-
tion.
S
HOOT - FINDING INCIDE NT S
A.The light does not turn on when the contact is on.
To check:
-if the electric connections are done prope rly;
-if the light of the board indicator is working properly (when the circuit is set to the
mass, the light must turn on). AL
TERNATOR
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16E7J-A-2/60 ENGINE
16 - 2
ST ARTING AND CHARGING
B.The light turns on when the engine is running
This indicates a charging fa ult, the cause of which may be: - the carrying belt of t he alternator i s broken, the charging conductor i s cut (+ con-
tinuous); - a fault with the alternator (rotor, stator, diodes or brushes);
- a fault with the voltage regulator;
- a voltage surge (overvoltage).
C. The customer / user claims a fault with the charging, as the
on-board light works correctly.
If the re gulated voltage is less than 13.5 V, the alternator is checked. The cause of the defect may be:
- a burnt diode;
- disconnected or cut live wire;
- the coal powder or the wear of the collector.
C
ONTROL OF VO LTAG E
A voltmeter is connected across the terminals of the battery and the voltage value is
read.
The engine is run until the needle of the voltmeter settles at the regulated voltage. This value should be within 13.5 and 14.8 V.
The maximum of consumer devices are connected: the voltage should remain between 13.5 and 14.5 V.
CAUTION!
In case electric arc welding i s being done on t he car, the battery and t he voltage
regulator will be compulsorily disconnected (t he alternator).
AL TERNATOR
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