Chery A11 2003 Repair Manual page 294

Maintenance Manual for Chery·Windcloud
12 Check if fuel pressure is lower than 350kPa
13 Shut down fuel gauge valve. Switch on ignition
switch again to make fuel pump work once more,
and check if fuel pressure is established.
14 Turn on fuel guage valve, clamp fuel return pipe
with fuel return interceptor to ensure no fuel
return, and check if fuel pressure is formed
rapidly.
15 Check if leakage or clogging occurs in fuel inlet
pipe.
16 Check if fuel return pipe is blocked up or bent.
17 Check if cylinder pressure of engine is normal.
18 Check if leakage occurs in engine intake system.
19 Check if intake manifold absolute pressure and
intake air temperature sensor is blocked up.
Marelli EFI System
Yes Go to next step
No Go to step 16
Yes Go to next step
No Go to step 15
Yes Replace
pressure regulator
No Repair/
injector or fuel pipe
Yes Repair or replace
fuel inlet pipe
No Replace fuel pump
Yes Repair or replace
fuel return pipe
No Replace
pressure regulator
Yes Go to next step
No Troubleshooting
Yes Repair
No Go to next step
Yes Repair or replace
No Replace ECU
fuel
replace
fuel
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