Topper

Hey guys,
How do I tell if I'm getting enough oil to my turbo? (I know if It it burns the bearings out of it I'm not getting enough)
I had trouble with a turbo (SPS62)that I put on my 03. The guy I bought it from said that it was rebuilt by II but after I overnight-ed to them and they took it apart they said it had the wrong bearings in it and it was never rebuilt by them. They also said that who ever-rebuilt it did a real crappy job. My stock turbo lasted a long time but it also sounds like the bearings are going bad.
I pulled the oil line that feeds the turbo and put it in a 1 quart soda bottle I started the truck and in side of 3 sec the bottle was over filling. I'm sure I have plenty of flow I have checked it the same way 4 or 5 times. I don't know if I have enough pressure. The gauge on the dash says I'm over 40pds but that doesn't really tell me anything. I was wondering if the braided line that feeds the turbo could be going bad and the rubber could be plugging the line when it gets hot or when it's under pressure. Any ideas would be very much appreciated!!!
Thanks guys,
Topper

Foxborough

I have a EGT gauge and wait till temperatures fall below 350* F. Usually takes a minute or so under normal driving. The manual has some recomendations also. Is it possible the truck has been turned off too soon for the turbo to spool down from it's 30,000 RPM ? I do not know how much oil flow to the oiler.

Topper

Thanks for the reply.
It's not a cool down issue. I to let it cool down before I shut the truck down. This last turbo died when I was driving. It only made it 300 miles before she bit the dust.
Topper

Spooler

If you have had a turbo failure due to lack of oil I would definetly replace the oil feed line. It sounds as if your line is Ok but I would question it. Us to be common practice to replace the line after a turbo rebuild or replacement due to oil starvation.

Topper

Thanks Spooler,
That's kinda what I was thinking and wanted to know if anyone had similar troubles in the past. I was hopping to find out if anyone had a pressure reading for the line feeding the turbo.
Thanks,
Topper

billie

IIRC, someone posted on here recently that a delamination of the inside of the hose could check fine for flow but act up and block occasionally. I tried to find the post but had no luck. Any fail of flow, even brief, would be bad. Sounds like a hose is cheap insurance.

Cya

Hvytrkmech

Thanks Billie, I posted it, If the hose is leaking through the steel braid, then that is a good indicator of a (possible) delamination problem. Pulling the feed line and dumping it into a bottle is a good way to check flow but not pressure. Pressure will force the oil behind the delamination and create a bubble or flap that restricts oil flow. I don't think you have an oil supply problem since it filled the bottle in a couple seconds. As previously stated, you can change the line as added insurance. Anytime we returbo a truck it gets new supply and return lines, the only exception is if the return line is steel pipe, (most are).


Tim

Topper

Thanks guys,
I'll order a new supply line today. I don't see any oil coming from the steel braided line but I'm taking any chances.
Thanks,
Topper

billie

HTM,
I was pretty sure I remembered it was a tech that posted that info. TKS for the back-up .

Cya

Topper

I ordered one today. In stock a little over $30.00 cheap insurance...
Topper

j-fox

You also need to check the drain line. If it is coked up, the oil can't leave the tubo and cause the same failure.

Hvytrkmech

Here you go, 2nd and 3rd page.

https://www.dieseltruckresource.com/...d.php?t=192408

Tim

billie

I didn't search for "doom" or "gloom "

dozer12216

The answer is real simple. It's not my fault. I will make any excuse can think of to direct problem away from me.
A oil line that blows a qt of oil in 3-4 seconds is not restricted PERIOD.........
"Not my rebuild" could be documented with a repair order if one existed. Most rebuilders identify their units with stamped numbers. Sorry you got the works from a non responsible builder or was directed to the wrong shop??? Try finding a repair path on unit if possible.