I have a 2005 Freightliner M2 with a C-9 that has been having unusually high oil pressure when first started in the mornings. The truck is fairly  28 Aug 2014 The pressure relief valve of an oil filter is there to make sure the pressure does not get too high. However, if the relief valve is damaged, then oil  9 Sep 2013 Today, our Volvo Diesel TAMD41H-B(BT) engine had oil pressure problems. Everything is fine until the RPMs get above around 1300. At that 

13 Dec 2018 What does high oil pressure mean? Is it a concern? Read on to find out! 14 Jan 2015 Low oil pressure will lead to seizure of engine and high oil pressure leads to failure of oil filters, gasket sealing, etc. Optimization of pressure  This allows oil to flow back into the crankcase preventing excessive oil pressure. The spring tension of the relief valve determines the maximum oil pressure. Engine temperature is the most common reason for high oil pressure. When your engine oil is cold, you do normally have very high pressure. Check your pressure when your engine oil is hot instead. If the pressure is too high when the engine oil is hot, you have to start diagnosing it!

Causes of High Pressure . Pressure remains high after a cold start. Oil flows adequately into the pump but does not flow through the oil galleries: Oil is thickened by soot load: Oil is thickened by oxidation: Oil viscosity is too high. The oil flow is poor. Filter blocked or partially blocked. Deposits in the oil gallery system cause increased backpressure.

So I have a Yanmar diesel that's running about 25% above spec'd oil pressure. The published range is about 50 - 64 psi, and I'm topping-out just under 80. I've swapped-out sender units and checked the engine with a mechanical gauge, and the readings are all the same. What is High Oil Pressure? An increase in oil pressure occurs when a high amount of pressure is needed to pump oil through the engine. The average car is equipped with an oil pressure gauge that indicates how much pressure is being used to transport this oil. Causes of High Pressure . Pressure remains high after a cold start. Oil flows adequately into the pump but does not flow through the oil galleries: Oil is thickened by soot load: Oil is thickened by oxidation: Oil viscosity is too high. The oil flow is poor. Filter blocked or partially blocked. Deposits in the oil gallery system cause increased High Oil Pressure Pressure remains high after cold start. Oil flows adequately into the pump, but does not flow through the oil galleries. Possible catastrophic failure. Shut down engine. Use oil with better low temperature properties (5W-30 or 0W-30). Soot load causing oil to thicken. Possible engine failure. Change oil and filter. The result is high oil pressure. The pressure can increase at the time of starting the car. Problem in Relief Valve. If the pressure gauge does not come to the normal level after starting the engine and driving the car for some time, you should check the relief valve. It prevents damage to the piping and vessels by releasing extra pressure. Equipped with Diesel 6. 6L Engine (RPO L5P) Condition Some customers may comment on high oil pressure or that the oil pressure is "pegged" high during the initial start up of the vehicle. Cause When first starting the engine with cold oil, the oil pressure can be up to 100 psi or 690 kPa (full range of oil pressure gauge) at idle conditions. This is normal with cold oil and internal relief valves in the engine will be active.

Engine oil pressure measurement is similar to coolant temperature some manufacturers do not include a separate high-oil-pressure warning in the instrumentation. Doug Woodyard, in Pounder's Marine Diesel Engines and Gas Turbines 

How does the viscosity of motor oil effect the pressure of the oil during operation of a diesel engine? I know that as the oil temperature increases, the oil viscosity  Low Verses High. Low oil pressure indicates insufficient lubrication is being provided to the motor. A reading less than 20 PSI or under the normal range on the  2 Oct 2019 They notice they have a low oil pressure problem or their oil pressure warning light comes on. They speculate whether they can avoid a costly  13 Dec 2018 What does high oil pressure mean? Is it a concern? Read on to find out! 14 Jan 2015 Low oil pressure will lead to seizure of engine and high oil pressure leads to failure of oil filters, gasket sealing, etc. Optimization of pressure 

14 Jan 2015 Low oil pressure will lead to seizure of engine and high oil pressure leads to failure of oil filters, gasket sealing, etc. Optimization of pressure 

I recently changed the engine oil and filter in my Westerbeke diesel. I gave it the usual (and specified) 4.5 quarts of SAE 30, specifically Chevron DELO. Now when it starts up it reads 80 psi of pressure (it might be more -- that's the maximum value on the gauge) instead of the expected 15 to 50 (idling to fully loaded -- it usually sits at 40). Recurrent high oil pressure, even after the machine has been running for a while, can indicate a problem with the pressure relief valve. The pressure relief valve is responsible for regulating oil pressure throughout the internal combustion engine. It is a safety device intended to keep vessels or piping from experiencing extreme pressure. Users of diesel engine oils often note a change in oil pressure when they change from a monograde oil to a multigrade. Typically, oil pressure is lower with a multigrade, and the uninitiated user can interpret the pressure drop as indicating a problem with the engine.

High engine oil pressure can cause severe engine damage such as oil pump drive and oil filter failure. Once these conditions occur the engine will rapidly start to wear and ultimately fail.

15 Jan 2017 The colder your engine, the higher your oil pressure, as the oil is still much thicker than it will be a Continue What causes low oil pressure in a diesel engine? 12 Feb 2019 Step by step guide on how to repair an automotive engine with high oil pressure, this information pertains to all internal combustion engines. 28 Mar 2019 So, Having low-high oil pressure is usually affected by temperature and oil viscosity. When you start the engine, the oil is cold , so the pressure  I recently changed the engine oil and filter in my Westerbeke diesel. I gave it the usual (and specified) 4.5 quarts of SAE 30, specifically Chevron DELO. Now when  10 Aug 2009 So what gives -- all is normal at full throttle (3200 rpm) to low cruise (2200 rpm), but back at engine cool idle (900-100 rpm) the oil pressure  2017-2018 GM 6.6L, L5P Duramax diesel engines. Reports have been filed that the oil pressure gauge. “pegs” or goes as high as it can when this engine first  5 Feb 2018 Experiencing high oil pressure on a regular or recurrent basis is a bad sign for your car. Know about the potential causes that may lead to this 

So I have a Yanmar diesel that's running about 25% above spec'd oil pressure. The published range is about 50 - 64 psi, and I'm topping-out just under 80. I've swapped-out sender units and checked the engine with a mechanical gauge, and the readings are all the same. It's pretty clearly the state of the engine. I recently changed the engine oil and filter in my Westerbeke diesel. I gave it the usual (and specified) 4.5 quarts of SAE 30, specifically Chevron DELO. Now when it starts up it reads 80 psi of pressure (it might be more -- that's the maximum value on the gauge) instead of the expected 15 to 50 (idling to fully loaded -- it usually sits at 40). Recurrent high oil pressure, even after the machine has been running for a while, can indicate a problem with the pressure relief valve. The pressure relief valve is responsible for regulating oil pressure throughout the internal combustion engine. It is a safety device intended to keep vessels or piping from experiencing extreme pressure.