How To Deal with High Diesel Engine Oil Pressure

Fault phenomenon: The diesel engine starts normally, but when running at high idle speed, the oil pressure indication is too high, exceeding the display scale of the oil pressure gauge.

Troubleshooting process: Run at medium speed for a period of time. After the water temperature rises, the oil pressure returns to normal.

Cause analysis: If the diesel engine runs at high speed directly after starting, the oil pressure will be too high due to the low temperature and high viscosity of the oil. This phenomenon is more obvious in winter. It should be operated at a medium speed after starting, and then enter high-speed operation or heavy-load operation after the water temperature rises.

Relevant parameters: Oil pressure of BF6M1013E and BF6M1013ECP in Deutz engines: ① The minimum oil pressure at low idle speed of the thermal engine (when the water temperature is above 85°C) is 0.5bar; ② The minimum oil pressure at high idle speed of the thermal engine (when the water temperature is above 85°C) is 2.0bar; ③The maximum oil pressure at high idle speed of the thermal engine (when the water temperature is above 85°C) is generally 5.0bar, and is allowed to reach 7.0bar in a short period of time. The main oil circuit in the lubrication system is equipped with a pressure relief valve to control the system pressure to protect the system.