Table 1-78 (Continued) 101 S/N Operation Test Results Actions 5 Check the spark plug for each cylinder. Check if its model and gap can meet with starndards. Yes Next step No Adjust or replace 6 Remove the idle speed regulator. Check the throttle body, idle speed regulator, and idle speed by-pass air way for carbon deposition. Yes Wash relevant parts No Next step 7 Check the intake air pressure sensor, throttle position sensor and the lines for normal operation. Yes Next step No Replace sensor 8 Remove the fuel injector. Check the fuel injector for leakage or blockage with a special fuel injector cleaner & analyzer. Yes Remove the trouble No Next step 9 Check the fuel for normal operation.
Yes Replace fuel No Next step 10 Check if the ignition sequence and timing of the engine can meet with the standards. Yes Next step No Check and repair ignition timing 11 Check the exhaust pipe for smoothness. Yes Next step No Repair or replace exhaust pipe 12 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