Table 1-55 (Continued)
S/N Operation Test Results Actions
Yes Next step
10
Clean the fuel injector and check the fuel injector for
normal operation.
No Replace fuel injector
Yes Renew fuel
11 Check if the fuel is wrong or contains water.
No 17
Yes Next step
12 Check if the fuel pressure is lower than 250kPa.
No 16
Yes Next step
13
Close the fuel gauge valve. Turn on the ignition switch
again and keep the fuel pump working for 3 seconds.
Check if fuel pressure can be produced.
No 15
Yes
Replace fuel pressure
regulator
14
Turn on the fuel gauge valve, and block the fuel return
pipe. Check if the fuel pressure is quickly produced.
No
Repair or replace fuel
injector or fuel pipe
Yes
Repair or replace fuel intake
pipe
15 Check the fuel intake pipe for leakage or blockage.
No Replace fuel pump
Yes
Repair or replace fuel return
pipe
16 Check if the fuel return pipe is blocked or bent.
No
Replace fuel pressure
regulator
Yes Next step
17 Check if the cylinder pressure of the engine is normal.
No emove the trouble
Yes Repair
18 Check the air intake system of the engine for leakage.
No Next step
Yes Repair or replace
19
Check if the intake air manifold absolute pressure and
temperature sensor is blocked.
No Replace ECU
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