Chery A11 2003 Repair Manual page 779

Maintenance Manual for Chery · Windcloud
12). Low rotating speed or engine flameout during acceleration
1 Set ignition switch in "ON". Check with scanner
to see if there is failure information record.
2 Check if air filter is smooth.
3 Make engine run at idle speed, and check to see
if rotating speed is normal when idling.
4 Make engine run at idle speed, and check to see
if intake pressure is between 35-65kPa.
5 Make engine run at idle speed, and check to see
if ignition advance angle is normal after coolant
temperature reaches normal value.
6 Connect fuel pressure gauge valve. Strap the
30# and 87# pins of fuel pump relay to make
fuel pump work, and then check if fuel pressure
is at about 350kPa.
7 Provide 12V voltage directly from accumulator
to injector with special connector, and check if
injector is working in good order.
8 Recheck injector to see if it is working in good
order after cleaning.
9 Check if fuel is deteriorated or contains water.
10 Check if fuel pressure is lower than 250kPa
11 Shut down fuel gauge valve. Switch on ignition
switch again to make fuel pump work once
more, and check if fuel pressure is established.
12 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.
13 Check if leakage or clogging occurs in fuel inlet
pipe
14 Check if fuel return pipe is blocked up or bent.
M7.9.7 EFI System
Yes Eliminate
displayed
No Go to next step
Yes Go to next step
No Replace
Yes Go to next step
No Refer to entry of
idle speed failure
for repair
Yes Go to next step
No Overhaul
Yes Go to next step
No Adjust
advance angle
Yes Go to next step
No Go to step 10
Yes Go to step 9
No Go to next step
Yes Go to next step
No Replace injector
Yes Replace fuel
No Go to step 15
Yes Go to next step
No Go to step 14
Yes Go to next step
No Go to step 13
Yes Replace
pressure regulator
No Repair/
injector or
pipe
Yes Repair or replace
fuel inlet pipe
No Replace fuel pump
Yes Repair or replace
fuel return pipe
No Replace
pressure regulator
failure
ignition
fuel
replace
fuel
fuel
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