Dacia SuperNova (engine E7J). Service manual — part 36
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 54
DIAGNOSING-CONFORMITY TEST
5.
Polluting fumes
At 2500 rot/min after keeping for
30 seconds
In idle mode, after settling rotation
ratio
CO < 0,3 %
CO
2
> 13,5 %
O
2
< 0,8 %
HC < 100 ppm
0,97< l <1,03
CO < 0,5 %
HC < 100 ppm
0,97< l <1,03
After memorization
Parameter: enrichment adapta-
tion under load
Parameter: enrichment adapta-
tion in idle mode
80 < X < 176
80 < X < 176
If further
problems arise,
refer to the
diagnosing of
those param-
eters
Enrichment
adaptation
4.
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 55
DIAGNOSING-INTERPRETING THE STATES
STATE
CONNECTION SPEED TRANSLATOR
SUGGESTIONS
There should be no defect present or memorized
Change the injection calculator if the car is unable to run at more than 40 km/h.
If further problems arise, refer to the diagnosing of the car speed parameter.
AFTER REPAIR
STATE
ANTI-STARTER
There should be no defect present or memorized.
SUGGESTIONS
Check if the anti-starter device is defect.
If the cause is the anti-starter device, remedy the defect before doing this diagnosing.
Check the insulation and the continuity of the cabling along the circuit from pin 58 calculator.
If the defect has not been eliminated, refer to the diagnosing of the anti-starter device.
Perform again the conformity test.
AFTER REPAIR
Perform again the conformity test.
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 56
DIAGNOSING-INTERPRETING THE STATES
STATE
IDLE MODE ADJUSTMENT
SUGGESTIONS
There should be no defect present or memorized
Check the resistance of the step-by-step engine for the idle mode adjustment.
Change it if necessary.
Check the insulation and the continuity of the cabling along the circuits:
- pin 12 calculator
♦ pin B step-by-step engine
- pin 41 calculator
♦ pin A step-by-step engine
- pin 42 calculator
♦ pin C step-by-step engine
- pin 72 calculator
♦ pin D step-by-step engine
Remedy if necessary, and then go on with the diagnose, watching the tolerance value of
the idle mode rotation ratio.
The idle mode rotation
ratio< minimal limit.
The idle mode rotation ratio is too small.
-Check the functioning of the enrichment adjustment.
-Clean the air supply circuit (clapper body, step-by-step engine) as they seem to be dirty.
-Check the oil level of the engine (too high a level causes splash lubrication)
-Check the pressure of petrol (see if it is not too small)
-Check engine compression with the “CLIP TEHNIC” tester
-Check the adjustment of the rocker-arms and the settling of the distribution.
-Check the ignition system
-Check the injectors.
If all the above are correct, then the step-by-step engine will have to be replaced.
AFTER REPAIR
Perform again the conformity test.
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 57
DIAGNOSING-INTERPRETING THE STATES
The idle mode rotation
ratio > maximal limit.
The idle mode rotation ratio is too great.
- Check the oil level of the engine
- Check the good functioning of the atmospheric pressure sensor.
- Check the tubes connected to the admission collector.
-Check the fittings of the admission collector
- Check the watertightness fittings of the clapper body
- Check the watertightness of the power-brakes.
- Check the presence of the nozzles of the oil-vapour re-aspiration circuit
- Check petrol pressure.
- Check the adjustment of the rocker-arms and the settling of the distribution.
If all the above are correct, then the step-by-step engine will have to be replaced.
Perform again the conformity test
AFTER REPAIR
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