What are the common malfunctions of the SWAFLY C6.4 fuel pump

1.Common faults of the SWAFLY C6.4 fuel pump are as follows:

Check the fuel system for leaks, repair or replace the leaking fuel lines or components. This suggests that there might be a leak at the connection part of the fuel pump.

After starting, the OBD fault light is always on; Difficulty in starting the engine; Fault code: P0032 - CANB passive fault, P00EC - no camshaft signal detected. The CANB passive fault is a data problem and should be blocked; The absence of camshaft signals leads to an inability to accurately determine the cylinder number during startup, making it difficult to start.

Fuel mixed with engine oil, manifested as an increase in engine oil volume and a strong diesel smell. Due to excessive wear of the plunger and matching parts of the fuel injection pump's slave cylinder, there is severe internal leakage within the slave cylinder, resulting in the leakage of diesel directly into the engine oil. At the same time, the gap on the side of the roller body of the fuel pump is too large, and diesel will directly enter the oil through the gap. When the diesel oil in the engine oil is mixed too much, it will leak out from the inlet and vent hole of the engine oil.

The oil leakage at the oil pipe joint of the oil delivery pump is caused by the loose seal at the high-pressure oil pipe joint connected to the oil outlet of the oil delivery pump. When such a failure occurs, it is possible to inspect the joint of the high-pressure oil pipe to check whether it is caused by excessive wear resulting in poor sealing, or by the screws not being tightened. And check whether there is a joint pad on the concave outlet of the fuel injection pump and the round convex high-pressure fuel pipe. If there is wear, it can be replaced as appropriate.

In summary, the common faults of the SWAFLY C6.4 fuel pump are diverse. In practical use, it is necessary to promptly troubleshoot and handle these faults to ensure the normal operation of the equipment.

2.How to deal with the leakage at the connection part of the SWAFLY C6.4 fuel pump

Leakage at the connection part of the SWAFLY C6.4 fuel pump may be caused by various reasons. If the leakage is caused by poor sealing, you can repair the joint of the high-pressure oil pipe and check whether it is due to excessive wear or loose screws. And check whether there is a joint pad on the concave outlet of the fuel injection pump and the round convex high-pressure fuel pipe. If there is wear, it can be replaced as appropriate. In addition, it can also check whether the fuel system has leaks, repair or replace the leaking fuel lines or components; Check the fuel quality, replace the fuel in the fuel tank, install a new fuel filter, and fill the fuel tank with high-quality clean fuel; Calibrate the speed/timing sensor; Check whether the ECM connectors JI/PI and J2/P2 and the injector connectors are installed correctly; Perform an injector solenoid test on the ET to determine if all injector solenoids are powered by the ECM. Use ET cylinder inlet and cylinder cut-out test to identify the injector that does not ignite; Inspect and repair the intake and exhaust systems; Check all auxiliary equipment for faults that may cause machine overload, repair or replace damaged parts.

3.What should I do if the SWAFLY C6.4 fuel pump failure causes difficulty in starting

There may be various reasons for the difficulty in starting due to the failure of the SWAFLY C6.4 fuel pump. After starting, the OBD fault light is always on; Difficulty in starting the engine; Fault code: P0032 - CANB passive fault, P00EC - no camshaft signal detected. Cause analysis: The CANB passive fault is a data problem and should be masked; The absence of camshaft signals leads to an inability to accurately determine the cylinder number during startup, making it difficult to start. Solution: For the P0032 fault, rewrite the new version of electronic control data released after September 2014 to mask the fault code; For the P00EC fault, check the camshaft sensor connector.

4.Why does the SWAFLY C6.4 fuel pump mix fuel with engine oil

The following reasons may cause the fuel pump of the SWAFLY C6.4 to mix fuel with engine oil. First, the gasoline pump is damaged, just like the water tap in the home is broken and the water will flow in disorder. If the gasoline pump is damaged, the gasoline may run into the engine oil. Secondly, when the engine temperature is low and the piston ring is severely worn, gasoline will flow along the cylinder wall into the oil pan and mix with the engine oil. The third is the combustion pressure of the cylinder. When the engine is running, the combustion of the cylinder will generate pressure, and some combustible mixture will leak from the gaps between the cylinder wall and the piston ring into the crankcase. Fourth, the cylinder liner and air ring are severely worn, leading to poor sealing. When gasoline is injected, it can seep into the crankcase, resulting in gasoline in the engine oil. After the oil is diluted by fuel, the viscosity will decrease significantly, affecting the formation of lubricating oil film. At this time, the oil pressure will generally decrease, and the oil will have a distinct smell of fuel.

5.Reasons for oil leakage at the joint of the fuel pump and fuel delivery pipe of the SWAFLY C6.4 fuel pump

The reason for oil leakage at the fuel pump's delivery pipe joint of the SWAFLY C6.4 fuel pump may be due to poor sealing. When such a failure occurs, it is possible to inspect the joint of the high-pressure oil pipe to determine whether it is due to excessive wear causing poor sealing or due to the screws not being tightened. And check whether there is a joint pad on the concave outlet of the fuel injection pump and the round convex high-pressure fuel pipe. If there is wear, it can be replaced as appropriate.

In summary, common faults of the SWAFLY C6.4 fuel pump include leakage at the connection part, difficulty in starting, mixing of fuel with engine oil, and oil leakage at the fuel pump's oil pipe joint. These faults may be caused by various reasons, and need to be carefully checked and analyzed, and corresponding solutions should be taken to ensure the normal operation of the fuel pump and the performance of the engine.

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