Just first want to thank everyone on this forum for all their skills and knowledge that they have give out for free.

Now my problem, I have a 2006 F-250 CCSB FX4 6.0 with 148k, has a coolant filter and scan gauge II. The truck is blowing white smoke at take off from idle and clears up. I am not losing any coolant, coolant system holds a vacuum, egr bay is dry. It started doing this back in Dec 12. Also in that month it started blowing white smoke even at idle. Then in Jan I noticed oil dripping out the tail pipe. Through this site I traced it back to turbo leaking oil. In Feb pulled turbo, and took it to a local shop were all they do is rebuild all sized of turbos. Cost me $500, got it back reinstalled it. Checked oil and it was good. After that I still had a little bit of smoke at take off but not bad, thought is might be oil in IC coming through. Smoke slowly got worse over the months tell last month. I did my high idle mod and used it for about 15 min. And ever since I can smoke out an intersection when I take off. Tested everything on cooling system it is all good still. Check oil and it was 2 quarts low. Pulled CAC tube and saw oil in the turbo again, down the cac tube, and all the way down into my filter housing. Discouraged that the turbo is bad again, or the PCV valve/CCV has a lot of oil coming out it, I cleaned it all up and put it back together. Came across the CCV re-route, added to list of things to do. Went back out after two weeks to see if the oil was coming from the CCV, the CCV vent was dry on the air inlet, but there was oil accumulated in the bottom of the turbo again.

So this leaves me to believe I have another leaking turbo? Or am I overlooking another problem somewhere else? Any help is greatly appreciated.

 

Injector O-rings or cups. BUMP to the top of the list

 

I would have to say that you answered your own question. My guess is their rebuild of the turbo has failed. Do you have oil in the turbo exhaust outlet pipe? Also does the white smoke smell of diesel or oil?

 

Is the injector O-rings or cups a common place to have oil leaking into combustion chamber? Would that cause there to be white smoke all the time? And thanks for the BUMP!

 

Leaking injector orings would cause fuel in the oil, cracked injector cups would cause fuel in the coolant. An injector that has hung open will cause over fueling and smoke, that's why I asked you what the smoke smells like.

 

Mustang 309, that's what I am thinking. Was just seeing if I was over looking another problem causing the turbo to fail a second time. As for the exhaust, no trying to be a smarta$$, it smells like a diesel exhaust to me. I will have to take off the downpipe and check for oil. I did not do that, thank you for reminding me.

Some of my other thoughts for the oil being in the turbo after cleaning it was that the IC has oil still in it, and when I have a turbo fart it is blowing that oil back into the turbo. Or there was still oil in the turbo fins from the CCV and it just settled back down in the turbo. Just some thoughts.

Going today to get the stuff to do the CCV re-route to the atmosphere for know. In about 2 months ill be able to get the Racor CCV6000.

Keep the help coming. It is greatly appreciated.

 

Retnec, there's a test you can do with the upper fuel bowl, Look in the tech folders on this I can't seem to bring it up for you . Maybe brett has a better computer lol. Its the bubble test for the Injectors. I'll keep trying .

 

Have you always had to add oil? If the oil was coming from the compressor side of the turbo you should see a fair amount in the intake looking in the EGR valve opening.

 

The bubble test is easy, just remove the secondary fuel filter and with the filter housing open crank your engine over using this method ( leave the key out of the ignition ) and watch for bubbles in the filter housing, by using this method there is no need to remove the fuel pump fuse/relay

 

Thanks Brett, That's what I was trying. Reps to ya Bud

 

I preformed the bubble test on the first turbo failure and there was no bubbles. I have not done it since the turbo replacement. That make two more things to look into. I might get to checking on those tonight, but if not it will be tomorrow afternoon. Thank you so much.

As far as adding oil this was the first time I had to do it. Of course its been since Feb. that I checked it last, and when I checked it about 3 weeks ago it was 2 quarts low. Hopefully I didn't do anymore damage letting the oil get that low.

Will doing a compression test let me know if it is something going on internally like oil blow by on rings, or something wrong with heads?

 

If no bubbles on the test ,Then at engine warm and front off truck parked nose down pull the EGR valve and look for wet down in the valve port. also you may want to look at the coolent white misty smoke could be EGR COOLER or heads but lets see the other test are first.

 

I really think you need to revisit the turbo, I would check the turbo exhaust outlet pipe for oil, the only other way I can see you burning oil is with bad valve guides. You can get an idea of the condition of the piston rings sealing by doing a blow-by test, get the engine running and remove the oil fill cap and see if you are getting gases of combustion coming out, there should be nothing coming out, I would check it cold and hot. Was the oil you found on the compressor inlet side of the turbo or the discharge side?

 

When started noticing the smoke, the first thing I checked was the coolant system. And I was losing coolant. I pulled EGR, all dry in valve port. I vacuum tested the system and it wasn't holding a vacuum. Found a leaking connection on the radiator hose. Fixed it and then it held a vacuum. Haven't lost any coolant since. That's why I started back to the turbo area.

 

I will check the turbo exhaust outlet pipe tomarrow, and perform the blow-by test to. The oil was puddled on the side were the hot CAC tube connects to the turbo. So I think it would be the compressor discharge side?

I was really wanting it to be something else, so I don't have to tell the wife I have to do it all over again, and try to get the turbo shop to do it for free. Almost wish they would reimburse the money and I would add another $700 to it and get the Powermax.