Table 1-77 (Continued) 12. Weak acceleration Common trouble location: 1. Fuel with water; 2. Intake air pressure sensor and throttle position sensor; 3. Spark plug; 4. Ignition coil; 5. Throttle body and idle speed by-pass air way; 6. Intake air way; 7. Idle speed regulator; 8. Fuel injector; 9. Ignition timing; 10. Exhaust pipe. Diagnosis Flow Table 1-78 100 S/N Operation Test Results Actions 9 Check the exhaust pipe for smoothness. Yes Next step No Repair or replace exhaust pipe 10 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 S/N Operation Test Results Actions 1 Check the clutch, tyre pressure, brake, tyre size and four-wheel alignment for normal operation. Yes Repair No Next step 2 Check if the air filter is blocked. Yes Check and repair air intake system No Next step 3 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 4 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 high voltage fire is normal. Yes Next step No Check and repair ignition system