What to know about the High Pressure Safety Valve:
The high pressure safety valve, or oil relief valve, is situated near the oil pump. When the oil is thick and cold, the oil pressure forces down the valves against the spring tension, letting the oil to go to the engine bearings. Then, it returns it to the crankcase. The oil pressure valve makes sure that the oil pressure is steady at all the bearings, irrespective of the speed of the engine. At high engine speed, the excess oil escapes so that power isn’t lost by the driving the oil pump.
Facts to Note:
If the oil pressure safety valve is defective, surplus oil can be delivered to the working parts of the engine and cause damage.
Excessive oil pressure can make it hard for the engine to drive the oil pump.
How to Fix:
The vehicle is lifted and held on jack stands. The oil pan is removed to access the oil pump safety valve on the pump.
The retainer clip is removed from the oil pump and the faulty oil pump high pressure safety valve is pulled out.
The new valve is fixed and secured. The oil pan is reinstalled with new gaskets. A new filter is fixed and oil refilled.
All removed components are reinstalled. The vehicle is removed from jack stands
The vehicle is started and checked for oil leaks and proper oil pump operation.
If you suspect any damage at all to the high pressure safety valve, you should get it examined immediately. One of your expert mechanics can help you analyze the problem and determine if a replacement is warranted.
Common symptoms indicating you may need to change the High Pressure Safety Valve:
Sudden drop in oil pressure
Oil light comes on
General poor performance
Importance of this service:
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If the high pressure safety valves fail, that could result in a leaking or cracked oil cooler. If that happens, the oil pressure valves will have to be removed and inspected, and that could be a very expensive procedure. If a valve ends up being stuck, excessive oil pressure can occur, and there could be serious damage to the engine. Work with one of your expert mechanics if you discover any of the symptoms we have described above.