1.CHECK EXHAUST GAS LEAK
 
 2.CHECK FOR INTAKE AIR LEAK
 
 3.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT
 
 4.CHECK FUEL PRESSURE
 
 5.CHECK MASS AIR FLOW SENSOR
 
 6.CHECK FUNCTION OF FUEL INJECTOR
 
 7.CHECK FUEL INJECTOR
 
 8.CHECK INTERMITTENT INCIDENT