Dacia SuperNova (engine E7J). Service manual — part 39
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 66
DIAGNOSING-BREAKDOWN LOCALIZATION ALGORITHM
STARTING PROBLEMS
1.
Do not use this information before having done the complete check-up
with the tester!
SUGGESTIONS
♦
♦
♦
♦
Check if there is petrol in the fuel tank (do not rely on the
on-board indices). Check if it is the fuel recommended by
the manufacturer.
Disconnect the tube between the draining valve and the
intake collector and strangle it up. If the disturbances disap-
pear, the cause was the draining valve.
Connect the “CLIP TEHNIC” device to do this test in ac-
cordance with the usual manner of work.
Connect the tester “CLIP” and do the test corresponding to
the check-up of the rotation signal.
Gently touch the step-by-step engine in order to possibly
unblock it.
Check the fuel
Check the canister
draining valve
♦
♦
♦
♦
Check the engine
compression
Check the
engine flywheel
Check the step-by-
step engine
♦
♦
♦
♦
♦
♦
Check if there are no broken tubes.
Check the state of the sparking plugs and the ignition coil.
Check the tubes and
hoses
♦
♦
♦
♦
Check the ignition
♦
♦
♦
♦
Check the flow and the pressure of the fuel: the condition
of the petrol-pump, of the pressure regulator. Check the
injectors (flow, shape of jet)
Check if the exhaust circuit is not strangled-up and the
catalyst is not stopped-up.
Check the fuel-
supply circuit
♦
♦
♦
♦
Check the exhaust
system
♦
♦
♦
♦
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 67
DIAGNOSING-BREAKDOWN LOCALIZATION ALGORITHM
IDLE MODE PROBLEMS
Do not use this information before having done the complete check-
up with the tester!
2
.
SUGGESTIONS
Check if there is petrol in the fuel tank (do not rely on the
on-board indices). Check if it is the fuel recommended by
the manufacturer.
Check the fuel
Check if there are no broken tubes.
Check the tubes and hoses.
♦
♦
Check the state of the sparking plugs and the ignition coil.
Check, on the oil gauge, if the level of the oil is not too high.
Connect the tester “CLIP” and do the test corresponding
to the check-up of the rotation signal.
Gently touch the step-by-step engine in order to possibly
unblock it.
Check the condition of the fittings.
Check, after taking them apart, whether the injectors leak.
Check if the clapper body is not clogged.
Check the ignition
Check the engine oil level
Check the step-by-step engine
Check the intake collector
Check the injectors
Check the body of the clapper
♦
♦
Check the engine flywheel
♦
♦
♦
♦
♦
Check the flow and the pressure of the fuel: the condition
of the petrol-pump, of the pressure regulator. Check the
injectors (flow, shape of jet)
Check if the exhaust circuit is not strangled-up and the
catalyst is not stopped-up.
Check the fuel-supply
circuit
Check the exhaust system
♦
♦
A
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 68
DIAGNOSING-BREAKDOWN LOCALIZATION ALGORITHM
A
Check if there are cases of lack of watertightness (noise)
on the power-brakes.
Connect the “CLIP TEHNIC” device to do this test in
accordance with the usual manner of work.
Disconnect the tube between the draining valve and the
intake collector and strangle it up. If the disturbances
disappear, the cause was the draining valve.
AFTER REPAIR
Erase the defects memorized. If there are no other problems,
erase the parameters memorized by the calculator.
Check the power-brakes
Check the engine compression
♦
♦
Check the canister
draining valve
♦
E7J-A-2/60 ENGINE
17
IGNITION AND INJECTION
17 - 69
DIAGNOSING-BREAKDOWN LOCALIZATION ALGORITHM
RUNNING PROBLEMS
3.
SUGGESTIONS
Do not use this information before having done the complete
check-up with the tester!
Check if there are no broken tubes
Check if the air filter is not deformed.
Check the condition of the fittings.
Check if the exhaust collector is watertight.
Make sure that, after taking them off, the injectors do not leak.
♦
♦
♦
Check if there are no broken tubes
Check the state of the sparking plugs and the ignition coil.
Check if there is petrol in the fuel tank (do not rely on the
on-board indices). Check if it is the fuel recommended by
the manufacturer. Check if there are no broken tubes.
Check if the exhaust circuit is not strangled-up and the
catalyst is not stopped-up.
Check the exhaust
system
♦
♦
♦
♦
♦
♦
♦
Check, on the oil gauge, if the level of the oil is not too high.
Check the air filter
Check the fuel
Check the tubes and
hoses.
Check the fuel-sup-
ply circuit
Check the ignition
Check the engine oil
level
Check the intake
collector
Check the exhaust
collector
Check the injectors
A
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