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Does the 6.6 duramax diesel engine have a pressure relief valve that regulates the oil pressure?

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  • Cars & Trucks Master
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It should have. It will be either part of the oil pump or a relief valve screwed into the oil galley or oil filter housing above the filter body.

Posted on Dec 06, 2014

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Posted on Jan 02, 2017

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Mikey108
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SOURCE: OIL PRESSURE RELIEF VALVE

If cleaning the engine does not work, replace the oil press. sending unit. These senders on Jeeps have had a history of problems where they will work one day and not the next day.

Posted on Jan 27, 2009

  • 1201 Answers

SOURCE: Location of Oil Pressure Sensor and Oil Pressure Relieve Valve

the oil pressure switch is on pssenger side, lower engine area,beside oil filter, mounted in engine block. The pressure relief valve is in the oil pump, in which case, you have to drop the oil pan,and take off the oil pump.

Posted on Jan 31, 2009

  • 1596 Answers

SOURCE: 2002 2500HD duramax

If it is A Diesel Engine It it Probably Over Fueling Due to A Misfire In 1 or more Cylinder or A Bad Injector Leaking into Cylinder

Posted on Feb 12, 2009

  • 2 Answers

SOURCE: low oil presure 2.8 v6 GM

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Posted on May 27, 2009

BRADLEYFRANC
  • 104 Answers

SOURCE: looking for oil pressure relief valve on my 95 cabrio

The oil pressure relief valve should be on the oil pump.If your oil pressure is ok,have the wiring tested to theswitches or try another set of clocks

Posted on Sep 16, 2009

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Holden Combo oil relief valve location and repair


The pressure relief valve is built into the engine oil pump inside the engine.

Dec 02, 2017 | Holden Cars & Trucks

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What does a oil pressure relief valve do


For any engine with an oil pump, the components inside it are designed and engineered to operate at a certain range of oil pressures.
For example, an automobile engine might be designed to operate at # 30 to # 70 pounds of pressure.
If you subjected the bearings to double the pressure, you could achieve bearing failure, as you could with not enough pressure.
The oil pressure relief valve will "open" when the upper limit of pressure is reached and allow the extra pressure and oil to go straight back to the crankcase.

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1 Answer

My 3 cyl koyota diesel has over 100 lb oil pressure but no oil in filter, what is going on?


I advise you suspect a blockage. The oil pressure seems excessive and excess pressure should be relieved and regulated by the oil pressure relief valve so surplus oil is directed back into the oil pan.

This is not happening so it would be reasonable to assume the oil flow is not reaching the relief valve. Further investigation of the spanner and dirty hands variety is needed.

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Fuel in engine base oil


I'm not much on diesels, but for gas engines the most common source is a leaking injector or fuel pressure regulator.

Jul 01, 2013 | 2001 Chevrolet Silverado 2500HD

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The oil pressure drops to zero at idle. The pressure goes to normal when the car is moving. Is there a problem with the oil pump?


at idle ,what regulates oil pressure ,is the clearence, in the pump, itself, off idle the relief valve, ,regulates ,pressure, let me know if you have a pump,put in it, pull the old pump, apart, see if the spring for the relief ,,bypass, valve is broken, i have had a few ,issues with ,gm, pumps,

May 14, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

My oil psi be on my 2003 chevy astro awd van


The oil pressure should be 60 to 65 psi when engine started cold and at operating temperature should be 40 to 50 PSI at idle and 45 to 60 at higher RPM's with engine at operating temperature. Low pressure could be a faulty oil pressure sending unit or a bad oil pressure regulator valve. Good luck and hope this helps, and you could always have your oil pressure check manually to ensure a correct pressure reading. If you think it could be the oil pressure relief valve (Sometimes) or the check valve (not very often). One is located inside the oil pump and the other in the adapter on the motor that the filter screws on to. If you also have a problem with the oil pressure being erratic when the motor has been running I would be looking at the valves.

Mar 05, 2010 | 2003 Chevrolet Astro

1 Answer

Looking for oil pressure relief valve on my 95 cabrio


The oil pressure relief valve should be on the oil pump.If your oil pressure is ok,have the wiring tested to theswitches or try another set of clocks

Sep 01, 2009 | 1997 Volkswagen Eurovan

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Fuel in oil on 2002 chevy 2500hd duramax


THE DURAMAX ENGINE INJECTORS GO BAD AND SPRAY TO MUCH DIESEL AND IT FILLS THE CRANK CASE UP 200 THOUSAND MILE WARRANTY COMMON PROBLEM DON'T DRIVE IT ANY MORE IF U HAVE BAD INJECTORS.

Jun 21, 2009 | 2003 Chevrolet Silverado 2500HD

1 Answer

Location of Oil Pressure Sensor and Oil Pressure Relieve Valve


the oil pressure switch is on pssenger side, lower engine area,beside oil filter, mounted in engine block. The pressure relief valve is in the oil pump, in which case, you have to drop the oil pan,and take off the oil pump.

Jan 31, 2009 | 1989 Toyota Land Cruiser

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