Table 1-77 (Continued)
S/N Operation Test Results Actions
Yes Next step
9 Check the exhaust pipe for smoothness.
No
Repair or replace
exhaust pipe
Yes Diagnosis help
10
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
12. Weak acceleration
Common trouble location:
1. Fuel with water; 2. Intake air pressure sensor and throttle position sensor;
3. Spark plug; 4. Ignition coil; 5. Throttle body and idle speed by-pass air way;
6. Intake air way; 7. Idle speed regulator; 8. Fuel injector;
9. Ignition timing; 10. Exhaust pipe.
Diagnosis Flow
Table 1-78
S/N Operation Test Results Actions
Yes Repair
1
Check the clutch, tyre pressure, brake, tyre size and
four-wheel alignment for normal operation.
No Next step
Yes
Check and repair air
intake system
2 Check if the air filter is blocked.
No Next step
Yes Next step
3
Connect the fuel pressure gauge (the connection point
is the front end of the intake pipe of the fuel distribution
pipe assembly), and start the engine. Check if the fuel
pressure of the engine under full working condition is
about 350kPa.
No
Check and repair fuel
supply system
Yes Next step
4
Draw out the wire of one of the cylinders, and connect
with the spark plug. Keep the electrode of the spark plug
about 5mm from the engine body. Start the engine, and
and check if the high voltage fire is normal.
No
Check and repair
ignition system
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