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Chevrolet sedan car cold car can not start
  • Automotive

A Chevrolet racing car with a mileage of about 30 thousand km. User response: the engine is not easy to start when the vehicle is cold. After receiving the car: 1) test with Tech-2, no fault code, observation engine data list found that the long-term fuel adjustment value is about -11%, short-term fuel adjustment value is about -11%, MAP is 45 to 47kPa, ignition advance angle is about 1 degrees, injection pulse width is 4.5 ~ 4.6 MS, IAT is 35. It can be seen that the data is obviously abnormal.

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