3.8 V6 oil pressure so high blowing theseals out of filter? need help?? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-10-2013, 07:55 AM   #1
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Default 3.8 V6 oil pressure so high blowing theseals out of filter? need help??

99 Camaro 3.8 v6 oil pressure fluctuates from low to high that it will sometimes blow the seals out of the oil filter. Got any ideas??
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Old 10-10-2013, 10:08 AM   #2
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Causes of High Pressure Reading:

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).

Oil is thickened by soot load. Potential engine failure. Change oil and filter. Check injector performance. Avoid excessive idling.

Oil is thickened by oxidation. Potential engine failure. Change oil and filter.

Oil viscosity is too high. Oil flow is poor. Potential engine failure. Consult owners manual/oil supplier for correct viscosity grade. Change oil.

Filter blocked. By-pass valve allows unfiltered oil to circulate. Reduces engine life. Change filter and oil. Investigate cause of blockage.

Deposits in oil gallery system cause increased back pressure. Reduces engine life. Change oil and filter. Use higher quality oil.

Oil too cold. Potential engine failure. Check engine thermostat system. Check to ensure correct oil viscosity.
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Old 10-10-2013, 11:00 AM   #3
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Thanks, but the oil and filter are changed regularly With high quality oil. I believe it is in the pump or something?? Still looking for help!! Thanks Jerry
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Old 10-10-2013, 12:20 PM   #4
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Could be the pump failing, or a blockage in the oil galleries. Try putting 1/2 a can of Seafoam in the oil for 100 miles, then do an oil and filter change. If there is any improvement, repeat once or twice.
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Old 10-10-2013, 01:14 PM   #5
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Did the Seafoam already! Thanks Need more help!!!
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Old 10-10-2013, 01:31 PM   #6
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There is a oil pressure regulator valve in the timing cover. Perhaps it has become stuck in the bore causing high oil pressure when cold. you need to take of the oil filer adapter and check the valve and spring. See attached pic, part 414 and 415.
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Old 10-10-2013, 01:33 PM   #7
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^ ^ ^
Oil filter adapter, Can't type this morning.....Need Coffee!
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Old 10-10-2013, 02:05 PM   #8
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We replaced the spring and valve also. Need more help!!! Thanks
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Old 10-10-2013, 02:15 PM   #9
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Last time I seen a 3800 blow oil out past a oil filter seal was because I accidentally left an old oil filter seal still attached to the adapter.
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Old 10-10-2013, 02:24 PM   #10
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What is the oil pressure readings? A good oil filter should be able to take 100psi. Does this only happen cold? Might have to get a softer spring for the regulator valve because this is the only thing I can think of that will cause a high pressure situation, or the oil galley is plugged after the filter. When you had the oil filter adapter off was it sludgy?
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