Wuxi Star 485 diesel engine, the more the throttle, the lower the oil pressure. Small throttle oil pressure is coming up!

This is a very serious phenomenon of oil pressure inversion. You can check one by one according to the following steps:

1. Whether the oil is added between the upper and lower score lines. (simplest) If it is still normal, follow the second step.

2. Check whether the filter pad is damaged. (Remove the oil filter)

3. Check whether the oil pump is worn, replace the oil pump and see if the oil pressure returns to normal. (Remove the gear room)

4. If it still doesn't work normally, you need to start disassembling the machine and ask carefully whether the filter screen is blocked by metal slag, whether the main oil circuit is clean and so on.

Does your 485 have a supercharger? If you bring a supercharger, the oil pressure itself will be upside down, but it is not obvious. The minimum oil pressure should not be lower than 3. You should know that the oil pressure is high when starting the cold machine.