What are the causes of excessive oil pressure?

1 Answers
JosephineAnn
07/30/25 4:49am
Excessive oil pressure can be caused by: 1. Excessive oil viscosity; 2. Improper adjustment of the pressure relief valve; 3. Malfunction of the oil pressure gauge or sensor. The functions of engine oil include: lubrication and anti-wear, auxiliary cooling, cleaning, sealing and leak prevention, rust and corrosion prevention, and shock absorption. Solutions for excessive oil pressure include: 1. Adjusting the clearance between the shaft neck and bearing of the pressure lubrication part; 2. Cleaning the oil pipes and passages, and maintaining the filter; 3. Selecting the appropriate oil grade; 4. Replacing the oil with the appropriate viscosity; 5. Checking and adjusting the pressure relief valve on the oil pump test bench to ensure the oil pressure meets the specified requirements.
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