thefrey
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- Joined
- Feb 3, 2025
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Well, this is not exactly a post I would like to be making... Let me back up and give context.
I recently bought this truck at 197k miles in January, and it's been a project. I have put 3500 miles on it and it's at almost 201k now.
I have been having a little issue with my 6.2 having low(ish) oil pressures, about 40psi cold, 45ish max cold under throttle, then 10-15 psi idle hot and 22 hot cruising. Also, there has been a lifter tick, but intermittent and random, so most things suggest it could be the pickup o-ring sucking air. The last owner claimed that they did all new lifters, but I am beginning to wonder if they didn't do them, considering I replaced the exhaust manifold bolts to rule out an exhaust tick. One of the bolts was pretty far backed out (since I believe the exhaust manifolds come off for new lifters). Other than that, the engine feels strong and hasn't given me other issues.
So, my initial thoughts were that it is the oil pickup tube o-ring, as the Yukon has been neglected by past owners, and I highly doubt it has been done before. I have thoughts on dropping the pan and cleaning out any sludge and putting a new o-ring and pressure relief valve.
Today I tried to do the overfill test, parked the truck on a slope, and then check the oil pressure. Which did seem to help about 5-10psi. So that's good, and it seemed like any tick went away or was almost inaudible.
Waited a couple hours, then came back out to drain the excess oil out of the pan. Which is when I noticed some glitter:
There was a good amount of glitter and a couple larger flakes. Also seemed to be a lot of (carbon chunks?) debris. I am also very concerned considering I really only drained a little over a quart out of the engine, so this isn't the full picture of what is in the crank case.
Any advice is much much appreciated, as I am not really sure what the best course of action forward is. Is this amount of glitter normal for this high of miles? Is it abnormal? Should I get rid of the car ASAP? Am I on borrowed time?
Also, I am a college student and currently job hunting. I don't need to give ya'll my life story haha but I don't have a large amount of money to throw at the car right now for any pertinent issues that I face. But I bought the car cheap and have been slowly chipping away at maintenance and upgrades. And I am by no means a mechanic, but I'm not afraid to do some repairs. So a full rebuild isn't exactly on the table at the moment (or AFM delete lol). So any advice helps, even if it stings a bit.
Edit: after trying to fish out some of the larger flakes, some of them seem like they are not metal and maybe some sort of plastic or paper?
I recently bought this truck at 197k miles in January, and it's been a project. I have put 3500 miles on it and it's at almost 201k now.
I have been having a little issue with my 6.2 having low(ish) oil pressures, about 40psi cold, 45ish max cold under throttle, then 10-15 psi idle hot and 22 hot cruising. Also, there has been a lifter tick, but intermittent and random, so most things suggest it could be the pickup o-ring sucking air. The last owner claimed that they did all new lifters, but I am beginning to wonder if they didn't do them, considering I replaced the exhaust manifold bolts to rule out an exhaust tick. One of the bolts was pretty far backed out (since I believe the exhaust manifolds come off for new lifters). Other than that, the engine feels strong and hasn't given me other issues.
So, my initial thoughts were that it is the oil pickup tube o-ring, as the Yukon has been neglected by past owners, and I highly doubt it has been done before. I have thoughts on dropping the pan and cleaning out any sludge and putting a new o-ring and pressure relief valve.
Today I tried to do the overfill test, parked the truck on a slope, and then check the oil pressure. Which did seem to help about 5-10psi. So that's good, and it seemed like any tick went away or was almost inaudible.
Waited a couple hours, then came back out to drain the excess oil out of the pan. Which is when I noticed some glitter:
There was a good amount of glitter and a couple larger flakes. Also seemed to be a lot of (carbon chunks?) debris. I am also very concerned considering I really only drained a little over a quart out of the engine, so this isn't the full picture of what is in the crank case.
Any advice is much much appreciated, as I am not really sure what the best course of action forward is. Is this amount of glitter normal for this high of miles? Is it abnormal? Should I get rid of the car ASAP? Am I on borrowed time?
Also, I am a college student and currently job hunting. I don't need to give ya'll my life story haha but I don't have a large amount of money to throw at the car right now for any pertinent issues that I face. But I bought the car cheap and have been slowly chipping away at maintenance and upgrades. And I am by no means a mechanic, but I'm not afraid to do some repairs. So a full rebuild isn't exactly on the table at the moment (or AFM delete lol). So any advice helps, even if it stings a bit.
Edit: after trying to fish out some of the larger flakes, some of them seem like they are not metal and maybe some sort of plastic or paper?
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