Maintenance Manual for Chery·Windcloud Marelli EFI System
Yes Go to next step 12
Check if fuel pressure is lower than 350kPa
No Go to step 16
Yes Go to next step 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.
No Go to step 15
Yes Replace fuel
pressure regulator
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.
No Repair/ replace
injector or fuel pipe
Yes Repair or replace
fuel inlet pipe
15 Check if leakage or clogging occurs in fuel inlet
pipe.
No Replace fuel pump
Yes Repair or replace
fuel return pipe
16 Check if fuel return pipe is blocked up or bent.
No Replace fuel
pressure regulator
Yes Go to next step 17 Check if cylinder pressure of engine is normal.
No Troubleshooting
Yes Re p a ir 18 Check if leakage occurs in engine intake system.
No Go to next step
Yes Repair or replace 19 Check if intake manifold absolute pressure and
intake air temperature sensor is blocked up.
No Replace ECU
43
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