Genuine Scooter Company Buddy 170, Руководство по обслуживанию

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5.
Trouble of start-up anytime despite RPM normal
General trouble location: 1. Water in fuel; 2. Fuel pump; 3. Engine temperature sensor; 4. Nozzle; 5. Ignition
coils; 6. Air throttle and & idle air bypass; 7. Air intake; 8. Ignition timing; 9. Spark plug; 10. Engine
mechanism.
Procedure for general diagnoses:
No. Operating Procedure
Detection
Results
Subsequent Steps
Yes
Repair the air intake
system.
1 Check any jam of the air filter and leakage of the air intake.
No Next step
Yes Next step
2
Connect a fuel pressure gauge before the fuel inlet of the
nozzle; start the engine to check the fuel pressure at 300kPa or
so.
No
Repair the fuel supply
system.
Yes Next step
3
Disconnect the ignition cable and connect a spark tester; start
the engine and check any high-voltage flash (blue/white).
No
Repair the ignition
system.
Yes Next step
4
Check the spark plug in the cylinder and its model and gap
conformable to specifications.
No
Adjust or change the
spark plug.
Yes
Correct circuits or
replace the sensor.
5
Press the engine temperature sensor connector and start the
engine; check if the engine is successfully started.
No Next step
Yes
Clean the air throttle
and the air intake for
idle speed.
6 Slightly pull the throttle to check if the engine is easily started.
No Next step
Yes
Change the defective
nozzle.
7
Disassemble the nozzle and check any leakage or jam in the
nozzle with a nozzle cleaner & analyzer.
No Next step
Yes Change fuel.
8
Check fuel and observe any trouble attributed to fuel just
added.
No Next step
Yes
Eliminate any
mechanical trouble of
the engine.
9
Check pressure of the engine cylinder and find any possibility
of pressure insufficient.
No Next step
Yes Next step
10
Check if mechanical ignition timing of the engine is
conformable to specifications.
No
Correct ignition
timing.
Yes Diagnosis assist
11
Connect an EMS adapter and press the power switch to check
voltages at Pins
1#, 19#, and 29#
; check grounding at Pins
8#
﹐
35
#
and
36#.
No
Repair the relevant
circuits.
16