(1) There is no oil in the tank or you forgot to open the tank switch. (2) Excessive air or water in the fuel supply system. The phenomenon is that the starting speed is not low but it does not catch fire and the exhaust pipe emits white smoke. The check method is to loosen the bleed screw on the diesel filter or the high pressure tubing on the high pressure pump. If there is air coming out, there is air. The method of elimination is to tighten the connections of the oil circuit, then loosen the bleeder screw on the high pressure pump, turn the crankshaft, and remove the air. Water found in diesel can also be eliminated in the same way. If there is too much moisture in the diesel, you need to replace the diesel. (3) Plugged pipe or filter. The method is to use a gas cylinder to blow the pipeline, clean the filter, and check the fuel tank filler screen is intact. (4) The plunger of the fuel injection pump is worn, and the plunger should be replaced at this time. (5) The fuel pump outlet valve is stuck or the oil valve spring is broken. The high-pressure fuel pipe connector can be removed, and the outlet valve and the valve seat can be taken out and cleaned. When the outlet valve spring is broken, it needs to be replaced. (6) The injection pump plunger spring breaks, causing the injection pump to have no pressure. (7) The injection pump plunger is stuck in the plunger sleeve. When the oil circuit is normal, the plunger does not move when the crankshaft is cranked, indicating that the plunger is stuck with the plunger sleeve. The injection pump should be disassembled and the plunger and plunger sleeve cleaned. (8) injector needle stuck. The injector should be removed and the needle valve removed from the injector to clean or replace the needle valve assembly. (9) The fuel injection time is incorrect, and the injection time should be corrected according to the regulations.
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