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turbo smoking?

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Old Sep 23, 2014 | 06:33 PM
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03 BLKTAHOE's Avatar
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Default turbo smoking?

When I get on it even a little the turbo smokes, I'm assuming that it's burning oil? I've checked the feed line and the drain line and there both tight. What could be the cause?

Thanks
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Old Sep 23, 2014 | 07:55 PM
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Blow by from the pistons maybe.

Maybe when you hit boost it puts pressure into the crankcase and thus you burn oil.

Hard to just guess at this though, it could be the turbo itself but wouldnt have a clue.
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Old Sep 23, 2014 | 07:58 PM
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are you running a catch can?
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Old Sep 23, 2014 | 07:58 PM
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where is it smoking from? might need a oil feed restrictor
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Old Sep 23, 2014 | 09:02 PM
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Whats your PCV setup. If the PCV is setup incorrectly it will smoke. The other possibilties are issues with the turbo oil drain or feed.
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Old Sep 24, 2014 | 04:40 PM
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I don't have a PCV set it up right now. The passenger side valve cover I got it vented to atmosphere . The driver side I have touched.
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Old Sep 24, 2014 | 04:48 PM
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Is the hose from the throttle body still going to the valvecover?
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Old Sep 24, 2014 | 10:28 PM
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Originally Posted by GMCtrk
Is the hose from the throttle body still going to the valvecover?


No its caped off I may look at the turbo drain more closely and see if that's it.
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Old Sep 25, 2014 | 06:19 PM
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Might need to run a restrictor sounds like its pushing oil into the exhaust housing. My turbo 5.3 setup did that but stopped when I ran a restrictor. Is your turbo a journal bearing or ball bearing?








Simple How To for a home made oil restrictor...



Get a AN fitting like this ^^^^^ that has a npt side on it that screws into your turbo and one side that works with your feed line. Cut the AN side down flat and put a nitrous jet in there... Play with different jets until you get it to stop smoking.


Heres a old junk -4an 1/8th npt fitting I made real quick to show the end result seals up just fine...

Last edited by Three6GMC; Sep 25, 2014 at 06:45 PM.
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Old Sep 25, 2014 | 07:10 PM
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Is this something you should do matter what? I thought I saw some smoke today and don't have a restrictor. Started up tonight and no smoke but I thought I remember where people saying it only did it hot.
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