Nessmuk
Well-Known Member
I found a little oil in my turbo outlet and the intake. Not much, but I wonder if it is normal. Might it be the cause of the low oil pressure ?
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Oil in turbo
- Thread starter Nessmuk
- Start date
Jaryd
Extremely Deplorable
I run my cdr to the outside my front fender and it stopped putting oil in my intake. I didn't like the idea of having a runaway situation with the wife and kids in the truck with me.
We don't have any kind of emission checks in South Carolina though. I don't know if you have to worry about passing emissions or not but might be something to look into. I think I put 3/4 braided hose on the barb fitting that hooks up right in front of the turbo.
We don't have any kind of emission checks in South Carolina though. I don't know if you have to worry about passing emissions or not but might be something to look into. I think I put 3/4 braided hose on the barb fitting that hooks up right in front of the turbo.
Jaryd
Extremely Deplorable
I know blow-by will let oil get in there from experience. My truck ran hot and took the temper out of the rings. I never had any blow-by until she ran hot on me. I was used to putting head gaskets on a gasser and going on down the road but learned the hard way that you can't do that with these engines. @WarWagon Is absolutely right about the rings. I was just looking around on here one day about blow-by after a head gasket replacement and come across @WarWagon saying you need to change out the rings when they run hot. I had put the engine back together and in the truck running before I read it. I've got another 6.5 that I'll be going through when I get our house built and it's for sure going to get new rings.
Will L.
Well-Known Member
If you can at all afford it, gapless rings when you do them. The only disadvantages they have is the added cost and delay in assembly waiting for them to be made after sizing your originals.
Jaryd
Extremely Deplorable
Oh yeah I'll be getting gapless rings.
I could be wrong but I don't think the oil in the intake and the low oil pressure are connected with each other. I think you have 2 different things going on in there.
The most common problem for low oil pressure that I've seen is that the cam bearings are worn.
Not saying that is what's happening to you though
I could be wrong but I don't think the oil in the intake and the low oil pressure are connected with each other. I think you have 2 different things going on in there.
The most common problem for low oil pressure that I've seen is that the cam bearings are worn.
Not saying that is what's happening to you though
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CDR is generally the source of the oil. Look in the turbo and see if the compressor blades are rubbing the housing indicating a bad bearing.
You can disconnect the CDR and the upper intake. Start the engine and load it: see if any oil is blown out the turbo. If so remove seat cushion from your butt from the near runaway condition...
What do you mean low oil pressure? Frankly it's not low unless it's below 10 PSI at idle. The old gauges are questionable and when hot the oil pressure drops off some. I haven't seen one idle at 40 PSI for example unless cold.
@Will L. would suggest cam bearing for low oil pressure.
The easy stuff: send oil out for a sample. Cut the oil filter open and see if anything is in it. After all the (unclear) IP failure in your other thread may have dumped fuel in the oil. Low injection pressure and NOT lighting all 8 can dilute the oil and wash engine rings out as my 1992 project thread details in my signature. Fuel in oil lowers oil pressure... Compare the smoke from my 1992 before rebuild to what yours was doing...
You can disconnect the CDR and the upper intake. Start the engine and load it: see if any oil is blown out the turbo. If so remove seat cushion from your butt from the near runaway condition...
What do you mean low oil pressure? Frankly it's not low unless it's below 10 PSI at idle. The old gauges are questionable and when hot the oil pressure drops off some. I haven't seen one idle at 40 PSI for example unless cold.
@Will L. would suggest cam bearing for low oil pressure.
The easy stuff: send oil out for a sample. Cut the oil filter open and see if anything is in it. After all the (unclear) IP failure in your other thread may have dumped fuel in the oil. Low injection pressure and NOT lighting all 8 can dilute the oil and wash engine rings out as my 1992 project thread details in my signature. Fuel in oil lowers oil pressure... Compare the smoke from my 1992 before rebuild to what yours was doing...
Nessmuk
Well-Known Member
Turbo has about 1/8 inch play side to side. Not rubbing anything. It was a smear of oil in the bottom of the turbo outlet and the same in the rear part of the intake. Maybe from cranking it trying to bleed the crapped out injection pump.
schiker
Well-Known Member
A little oil is normal in older engines that have never been cleaned. It would have to be leaking a fair amount to get a runaway. If you are using oil significantly I then would worry. Not using more than 1 to 1-1/2 quarts between ~ 3,000 miles then its probably ok (oil usage depends on how many rpm's you cruise and long commute or sustained boost). Also dirty air filter pulls more blow by vapors.
500 miles on a quart of oil is IMO fine when heavily loaded towing on a 6.5/6.2. I have had several 6.2/6.5 engines use this much oil working hard towing grades. IMO 1 quart every 1000 miles no one will do anything about on any auto or truck engine. The exception being more than 1 quart every 1000 miles AND not towing working hard. Low oil pressure or lots of blowby is more actionable than oil usage.