① Beiben diesel engine has not run for a long time: the return pipe should extend below the diesel level

② Crankshaft speed signal and camshaft signal are too weak, and synchronization judgment time is long: readjust

③ Low pressure pipeline has a small amount of air: exhaust

④ The ambient temperature is too low and the preheating device fails: replace the preheating device

⑤ The quality of diesel oil and engine oil of Baotou North Benz accessories is too poor to meet the standard: replace the standard oil

⑥ Beiben exhaust brake butterfly valve is stuck, resulting in poor exhaust: replace the butterfly valve

⑦ Baotou North Benz accessory starter or flywheel ring gear: replace the starter and flywheel ring gear

⑧ The piston ring and cylinder liner of Baotou North Benz accessory engine are worn or the valve seal is not tight: replace the piston ring, cylinder liner or valve seat and valve