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 89 S/N Operation Test Results Actions 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. Yes Next step No Check and repair fuel supply system 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. Yes Next step No Check and repair rotation speed sensor line 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. Yes Next step No Check and repair ignition system 4 Check the pressure of each cylinder of the engine. Check if the pressure is enough. Yes Remove the mechanical troubles for the engine No Next step 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? Yes Diagnosis help No Check and repair relevant line