Chery automobile Service Manual page 191

13) Malfunction to increase the speed or stall during acceleration
Turn the ignition switch to "ON" position.
Inspect with the diagnostic tester to see
1
whether there
information record.
Verify that the air filter is free of any
2
blockage.
Run the engine at idle speed in order to
3
verify that the idle speed is normal.
Verify that the air intake pressure is
4
maintained between 35-65 kPa at idle
speed.
Run the engine at idle speed until the
coolant temperature reaches its normal
5
value in order to verify that the ignition
advance angle is normal.
Connect the fuel manometer valve.
Short the 30# and 87# pins of the fuel
6 pump relay to operate the fuel pump in
order to verify that the fuel pressure is
being maintained at about 350kPa.
Apply a voltage supply of 12V directly
between the battery and the fuel injector
7
with special connector, and verify that the
fuel injector functions normally.
After washing and cleaning the fuel
8 injector, verify again that it can function
normally.
Verify that the fuel is deteriorated or
9
contaminated with water.
Verify that the fuel pressure is lower than
10
250kPa.
Turn off the fuel manometer valve.
Connect the ignition switch again to
11
re-operate the fuel pump in order to verify
that the fuel pressure can be established.
Turn on the fuel manometer valve and
clamp the fuel return pipe with the fuel
12 tube clamp to stop the fuel return in order
to verify that the fuel pressure can be
established quickly.
is any malfunction
G-82
Fix the indicated
Yes
malfunction.
No Proceed to next step.
Yes Proceed to next step.
No Replace
Yes Proceed to next step.
Overhaul according to
No the idle speed
malfunction instruction
Yes Proceed to next step.
No Overhaul
Yes Proceed to next step.
Adjust the ignition
No
advance angle
Yes Proceed to next step.
No Proceed to Step 10
Yes Proceed to Step 9
No Proceed to next step.
Yes Proceed to next step.
Replace the fuel
No
injector.
Yes Replace the fuel.
No Proceed to Step 15.
Yes Proceed to next step.
No Proceed to Step 14.
Yes Proceed to next step.
No Proceed to Step 13.
Replace the fuel
Yes
pressure regulator.
Repair or replace the
No fuel injector or the fuel
pipe.