justinrose10 wrote:
Hi all,
Long time reader, first couple posts. Today, I took the Jeep for an two hour round trip to pick up my official passport. (Getting deployed) I came back, and turned off the Jeep and noticed a light grinding noise as it shut down. I thought it odd, so I popped open the hood, and started it back up. I noticed my CCV was pushing quite a bit of whitish smoke, and some oil had dripped out of it which I have never seen it done before. I checked the oil level, and sure enough it was low. I had just changed the oil to Rotella 5w-40 this past Saturday. I added .75 qt. I then gave it a few revs, and it spit the oil out the tailpipe. And I mean all of what I added. I shut it back down, and heard the same friction-like sound from the turbo after shutdown for about 2-3 seconds. The Jeep had about 170k, but the motor is only at 14,000 since it blew up before I put it, and the previous owner had a new long block installed. I can't be sure if the turbo was new or not at that time. I'm afraid the turbo is shot.
What are your thoughts?
-Thanks
Remove the air supply hose from the intake side of the turbo. I find it easiest to remove the top of the box along with the hose, and some folks remove the lower part too. Once you have that off wiggle the end of the intake side of the turbo shaft. If there is perceptible play either perpendicular to the shaft axis (radial play) or along the axis of the shaft (longitudinal play) your turbo is toast. Grinding noises from the turbo are a Bad Thing.
One of my PM checks is to check the turbo shaft play at every oil change.

It is also very important to give the turbo abundant cool-down time.