React Slowly When It Is Accelerated - Chery A21 2005 Service Manual

CHERY·A21 SERVICE MANUAL

12. React slowly when it is accelerated.

General failure component: 1) water in fuel; 2) air intake pressure sensor and throttle
position sensor; 3) spark plug; 4) throttle valve and idle speed by pass port; 5) air intake
port; 6) idle speed regulator; 7) injector; 8) ignition timing; 9) exhaust pipe.
General diagnosis flow:
No.
1
Connect the fuel pressure meter ( connecting point is the
front end of fuel distributing pipe assembly fuel intake
pipe); start the engine and check fuel pressure at idle speed
2
if it is around 260kpa; take off the vacuum pipe from fuel
pressure regulator check the fuel pressure if it is around
Check spark plugs in every cylinder and observe its type
3
Disassemble idle speed regulator and check throttle valve,
4 idle speed regulator and idle speed by pass port if there is
Inspect air intake pressure sensor, throttle position sensor
5
Disassemble the injector, check the injector using the
6 injector special cleaning analysis meter and observe if it is
Check fuel conditions and check if the failure is appeared
7
Check the engine ignition order and ignition timing if it is
8
9 Check the exhaust pipe if the air exhausting is smooth
Connect EFI system adaptor, turn on the ignition switch;
check the power supply of pin No.12, 13, 44, 45 and No.63
10
if it is in right conditions; check pin armature of No.3, 51,
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Operating steps
Check the air cleaner if it is jammed.
300kpa.
and clearance if it is accord with the regulation.
carbon deposition.
and its line if it is working correctly.
leaking or jammed.
after the fuel refilling
accord with the regulation.
53, 61 and No.80 if it is in right conditions.
64
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ENGINE EFI SYSTEM
Result Follow up steps
Repair the air
Yes
intake system
No Next step
Yes Next step
Repair the fuel
No supplying
system
Yes Next step
Adjust or
No
replace
Clean related
Yes
part
No Next step
Yes Next step
Repair line or
No
replace sensor
Replace fault
Yes
part
No Next step
Yes Replace fuel
No Next step
Yes Next step
Repair ignition
No
timing
Yes Next step
Repair or
No replace exhaust
pipe
Yes Diagnosis help
Repair
No corresponding
line