The Engine Can Draw Rotating But Can Not Start Successfully When It Is Started - Chery A21 2005 Service Manual

CHERY·A21 SERVICE MANUAL

2. The engine can draw rotating but can not start successfully when it is started.

General failure component: 1) no fuel in fuel tank; 2) fuel pump; 3) speed sensor; 4)
ignition coil; 5) engine mechanical part.
Diagnosis flow:
No.
Connect the fuel pressure meter ( connecting point is
the front end of fuel distributing pipe assembly fuel
intake pipe); starting the engine by starter and check
1
vacuum pipe from fuel pressure regulator check the
Connect EFI diagnostic meter; observe "engine speed"
2
Pull off one of the cylinder separating line and take off
this cylinder injector joint and connect spark plug to it;
3
engine body; start the engine by starter and check if
4 Check the pressure of each engine cylinder; check if
Check if the power supply to ECU pin No.12, 13, 44,
5 45, 63 is correct; check if the pin armature of No. 3,
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Operating steps
fuel pressure if it is around 260kpa; take off the
fuel pressure if it is around 300kpa.
data item and start the engine and check if there is
rotation speed signal is output.
keep the spark electrode around 5mm away from
there is blue and white high pressure fire.
there is engine cylinder insufficient pressure.
51, 53, 61, 80 are working correctly.
54
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ENGINE EFI SYSTEM
Result Follow up steps
Yes Next step
Repair the fuel
No supplying
system
Yes Next step
Repair the
No
sensor cable
Yes Next step
Repair the
No
ignition system
Eliminate
engine
Yes
mechanical
failure
No Next step
Yes Diagnosis help
Check the
No corresponding
line