Chery automobile Service Manual page 177

4) Difficult start-up under normal engine speed
Item
Operation procedure
No.
Turn the ignition switch to "ON"
position. Inspect with the diagnostic
1
tester to see whether there is any
malfunction information record.
Verify that the air filter is free of any
2
blockage.
After start up, verify that the air intake
3 manifold pressure is maintained between
35-65 kPa at idle speed.
Step on the throttle gently and observe
4
whether it's easy to start up.
Connect the fuel manometer valve. Short
the 30# and 87# pins of the fuel pump
5 relay to operate the fuel pump in order to
verify that
maintained at about 350kPa.
Apply a voltage supply of 12V directly
between the battery and the fuel injector
6
with special connector, and verify that
the fuel injector functions normally.
After washing and cleaning the fuel
7 injector, verify that its function is
normal.
Replace the fuel and verify that the fuel
8
is deteriorated or contaminated by water.
Verify that the fuel pressure is lower
9
than 350kPa.
Close the
Connect the ignition switch again to
10
re-operate the fuel pump in order to
verify that the fuel pressure can be
established.
Open the fuel manometer valve and
clamp the fuel return pipe with the fuel
11 tube clamp to stop the fuel return in
order to verify that the fuel pressure can
be established quickly.
Verify that the fuel inlet pipe has any
12
leakage or blockage.
the fuel pressure
fuel manometer
G-68
Inspection
results
Yes
No
Yes
No
Yes
No
Yes
Yes
No
is
Yes
No
Yes
No
Yes
No
Yes
No
valve. Yes
No
Yes
No
Yes
Follow-up procedure
Fix the indicated
malfunction
Proceed to next step.
Proceed to next step.
Replace
Proceed to next step.
Fix the leakage of air
intake system
Replace and inspect the
throttle valve and idle
speed passage
Proceed to next step.
Proceed to Step 9
Proceed to Step 8
Proceed to next step.
Proceed to next step.
Replace the fuel
injector
Replace the fuel
Proceed to Step 14
Proceed to next step.
Proceed to Step 13
Proceed to next step.
Proceed to Step 12.
Replace fuel pressure
regulator
Repair or replace the
fuel injector or the fuel
pipe
Repair or replace the
fuel air inlet pipe