2. Start failure of the engine
Common trouble location:
1. No fuel in the tank; 2. Fuel pump; 3. Rotation speed sensor;
4. Ignition coil; 5. Mechanical part of the engine
Diagnosis Flow
Table 1-68
S/N Operation Test Results Actions
Yes Next step
1
Connect the fuel pressure gauge (the connection
point is the front end of the intake pipe of the fuel
distribution pipe assembly), and start the engine.
Check if the fuel pressure of the engine under full
working condition is about 350kPa.
No
Check and repair fuel supply
system
Yes Next step
2
Connect the electronic injection system diagnostic
instrument, and check the rotation speed of the
engine. Start the engine, and check if there is rotation
speed signal output.
No
Check and repair rotation
speed sensor line
Yes Next step
3
Draw out the wire of one of the cylinders, and connect
with the spark plug. Keep the electrode of the spark
plug about 5mm from the engine body. Start the
engine, and and check if the blue white high voltage
fire is produced.
No
Check and repair ignition
system
Yes
Remove the mechanical
troubles for the engine
4
Check the pressure of each cylinder of the engine.
Check if the pressure is enough.
No Next step
Yes Diagnosis help
5
Connect the electronic injection system adapter. Turn
on the ignition switch. Check the power supply of the
pin 12#, 13#, 44#, 45#, 63#. Check the grounding of
the pin 3#, 51#, 53#, 61#, 80#. Are they OK?
No
Check and repair relevant
line
To Next Page
Loading...
