Why does the exhaust pipe fail when the water well drilling rig is started?

Diagnosis of a rig that can turn over when starting, but does not start (no smoke in the exhaust). When starting the engine, no smoke is discharged from the exhaust pipe and there is no outburst sound, which generally belongs to the problem of the oil circuit and is analyzed in detail as follows:

① There is no oil in the fuel tank.

② fuel filter, oil and water separator clogging.

③ Low-pressure oil circuit does not supply oil.

Injector pump does not pump oil.

⑤ Air in the fuel line.

⑥ The gas distribution phase is out of alignment. The opening moment of the valve is not coordinated with the stroke of the piston in the cylinder. If the piston in the cylinder for the compression stroke, the inlet and exhaust valves are open, fresh air is driven out of the cylinder, so that there is no combustion gas in the cylinder, can not start.

⑦ The solenoid valve of the type injection pump is bad and in a closed state, and the diesel fuel cannot enter the high-pressure chamber.

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