Genuine Scooter Company Buddy 170, Руководство по обслуживанию

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13. Acceleration powerless; performance bad
General trouble location: 1. Water in fuel; 2. Inlet pressure sensor and air throttle sensor; 3. Spark plug; 4.
Ignition coils; 5. Air throttle and idle air bypass; 6. Air intake; 7. ISC ; 8. Nozzle; 9. Ignition timing; 10.
Exhauster.
Procedure for general diagnoses:
No. Operating Procedure
Detection
Results
Subsequent
Steps
Yes Reparation
1
Check any troubles such as clutch slip, low tire pressure, brake drag,
wrong tire size.
No Next step
Yes
Repair the air
intake system.
2 Check the air filter for any jam.
No Next step
Yes Next step
3
Connect a fuel pressure gauge before the fuel inlet of the nozzle; start the
engine to check the fuel pressure at 300kPa or so during the idle status.
No
Repair the fuel
supply system.
Yes Next step
4
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
5
Check the spark plug in the cylinder and its model and gap conformable
to specifications.
No
Adjustment or
replacement
Yes
Clean relevant
parts.
6
Remove the ISC and check the air throttle, the ISCand the idle air bypass
for any carbon deposition.
No Next step
Yes Next step
7 Check the inlet pressure sensor, the air throttle sensor and circuits.
No
Correct circuits or
replace any sensor.
Yes
Replace the
defective nozzle.
8
Disassemble the nozzle and check any leakage or jam in the nozzle with
a nozzle cleaner & analyzer.
No Next step
Yes Change fuel.
9 Check fuel and observe any trouble attributed to fuel just added.
No Next step
Yes Next step
10 Check if the engine’s ignition timing is conformable to specifications.
No
Correct ignition
timing.
Yes Next step
11 Check the exhauster for exhaust normally discharged.
No
Repair or replace
the exhauster.
Yes Diagnosis assist
12
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.
24