Lifan 620 - Page 97

Table 1-74 (Continued)
S/N Operation Test Results Actions
Yes Replace sensor
4
Disconnect the coolant temperature sensor, and
start the engine. Check the engine under warm-up
for unstable idle speed.
No Next step
Yes Remove the trouble
5
Remove the fuel injector. Check the fuel injector for
leakage, blockage or abnormal flow with a special
fuel injector cleaner & analyzer.
No Next step
Yes Replace fuel
6 Check the fuel for normal operation.
No Next step
Yes
Remove the mechanical
troubles for the engine
7
Check the pressure for each cylinder of the engine.
Are they great different?
No Next step
Yes Diagnosis help
8
Connect the electronic injection system adapter.
Turn on the ignition switch. Check the power supply
of the pin 12#, 13#, 44#, 45#, 63#. Check the
grounding of the pin 3#, 51#, 53#, 61#, 80#. Are
they OK?
No
Check and repair relevant
line
96
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