Trouble Analysis
Contents
1. Remove the injector unit power on and check the injector and find that the No 2 injector doesnjt work After this injector is replaced install the new injector on the vehicle test the vehicle and find vehicle returns to normal Final Measure s Replace the No 2 injector2. Model QQ 7080 Trouble Category Engine Road Mileage a ey Possible Trouble s The engine chatters seriously Trouble Analysis The trouble is a typical problem about the single cylinder not work In general if the ignition switch doesnjt turn on a slight gasoline flavor from the engine exhaust pipe can be smelt At the same time when the accelerator pedal is rapidly stepped on a slight blasting sound from the exhaust pipe can be heard However The vehicle has no this symptom So it can be determined that the fault point is located at the fuel pipeline Although the resistance of injection nozzle in the fuel pipeline is regular it canjt show that the injector itself has no problem It is possible that although the value of resistance is normal the fuel pipeline of injector is already jammed and the fault symptom above occurs as before Troubleshooting Compared with the four cylinder or six cylinder engine the three cylinder engine chatters considerably but it is considerably felt that the chattering of the vehiclejs engine is caused by the cylinder failure Check all ignition high voltage cables ignition coils and low level control circuit and find all of them are normal Check the cylinder pressure and find it is approx 11 times atmospherical pressure Check the resistance of any injector and find all values of resistance are approx 11 16 Q So it is doubted only that the trouble is caused due to the fuel pipeline problem
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