Big Dipper142000 km, oil and gas dual-use, and the taxi idle speed is unstable in the morning.

Too much carbon deposit in the cylinder 1 2 oxygen sensor is not easy to operate or the data is incorrect. 3 Fuel pressure is not enough to measure fuel pressure. 4 Compression ratio is not enough to measure cylinder pressure. 5 Too much carbon deposit in the throttle valve. Cleaning the throttle valve with two 6 nozzles is not good. I saw what you wrote, but it may not meet the standard after cleaning. 7 Air leakage in the intake branch pipe (check carefully).