I have high oil pressure in a 1997 GMC Suburban and one of my friends said that i could drop the oil pan and clean teh bypass valve off and that might fix the problem is that a good solution or do i need to take it to a mechanic ive changed the oil filter and it keeps popping off the oil filter gasket oin the back when you start it up help please i really need this suburban running soon thank you.
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You may have to pull the oil pressure regulator to clean out the relief valve / plunger. Some times it is accessible from the side of the block and with others the pan has to come off as it is a part of the oil pump.
I looked at info for 1500--5.7L engine. 6 psi @ 1000 rpms 18 psi@2000 rpms 24 psi @ 4000 rpms
Sometimes, you can use analog gage in place of oil pressure sending unit and double check oil pressure that way. If oil pressure is actually low, if high mileage engine, I doubt replacing oil pump will help. I just wanted to add, check oil pressure engine warmed up.
you may try changing the sender first before the time to change the oil pump. level of skill to change the oil pump is not high. time wise it requires either pulling the motor or raising the engine up in the cradle and droppin the oil pan . to answer your question directlly bout 9 to 12 hours hard
The oil pump is on the front of the engine. the pan and front of the engine has to come off. the crankshaft drives the pump. the cross member bolts in. you may check the oil pick up tube first. sometimes a mechanic has a bore scope and can go up in the oil pan drain hole and look at the screen. Its a lot of work/money to be guessing. good luck
It depends on your mileage. It's normal for the pressure to read high on start up and then drop some but your numbers are a little low on start up, usually on the high side of 40-45.You could check your pressure with another guage and see if it reads any different. If it does then you should change yours. But if your mileage is running on the high side of 200,000 then it's probably wear and tear. I would be inclined to try a heavier oil, 15-40 or 20-50. This should bring the pressure up and help with lubrication. You could also add something like Lucas to your oil to help with lubrication and pressure. It's also possible the oil pump is wearing out but unless the mileage is below 150,000 it likely won't do much good and a new pump won't like the heavier oil.
If you are unsure of the mileage you could do a compression check. If it's 100 or under the engine is worn.There is still life in it as long as the numbers are close together but it is time to start thinking about the next step.
your oil sensor comes on at less than ten psi, you may have internal engine damage how many miles on engine, any gum up inside engine, you can try to put on a high pressure high volume melling oil pump to try to help for the time being, but you may need to have it torn and repaired.
Sorry to say it sounds like the motor is gone. Higher oil pressure when the oil is cold is normal. But, when the engine gets to operating temp and the pressure bottoms out and the engine knocks you have big problems. If the mileage is very high (150,000) or more your bearings are so worn that the oil can't fill the void between the surfaces and thus the low oil pressure.