What Causes Insufficient Oil Pressure?

[VanCameron]

The following are the reasons for insufficient oil pressure: 1. Insufficient engine oil storage, resulting in low oil pressure; 2. Dirty or viscous oil, preventing the oil pump from sucking in and pumping out oil, leading to low or no oil pressure; 3. Thinned oil leaking through the gaps of engine friction pairs, causing low oil pressure; 4. Faulty oil sensor, pressure gauge, or circuit resulting in low oil pressure; 5. Oil pipe leakage, damaged oil pump, or excessive wear of its components, such as excessive clearance between the crankshaft and bearing shells, malfunction of the pressure relief valve due to weak springs or damaged steel balls, all of which reduce the oil intake and output, leading to low or no oil pressure.