Car engine gasoline pump common fault and overhaul

Common troubleshooting: If the engine can not start, cranking the crankshaft with the crank handle feel relaxed, the smaller the force, can shake multiple laps; to the carburetor can pour a little gasoline can start, but immediately turn off the engine; the engine is running Gradually stalling, may be due to poor performance of the gasoline pump is not oil or poor oil supply. Fault diagnosis, the gasoline pump can be removed from the tubing, hand cranked handle rotation engine, or manually pull the pump pump handle, oil spouts from the tubing, the fault in the tubing to the carburetor, or should be Overhaul gasoline pump the following oil.

Common faults of the gasoline pump have oil pressure and insufficient fuel supply.

If the fuel pump diaphragm cracked, gasoline will leak through it inside the crankcase to dilute the oil, so that the oil surface increased, out of the oil dipstick can be checked out. If it is found that the membrane hardening deformation or damage infiltration, should be promptly replaced. Should be paid attention to the installation of single-piece and the pump body aligned eyes, nuts firmly secured. When disassembling, first clamp the diaphragm rod on the vise, remove the nut and remove the old piece; after replacing the new piece, tighten the tightening nut.

Petrol pump rocker arm and the cam at the contact, due to the relative movement for a long time easily lead to the wear of the rocker arm, resulting in diaphragm stroke shortened, thereby reducing fuel supply. If its wear more than 0.2dnm, should be repaired, and meet the required roughness requirements.

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