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2000 RT - Blue Smoke right side exhaust

Discussion in 'RT/10 and GTS Discussions' started by LenZ, Mar 12, 2020.

  1. LenZ

    LenZ Enthusiast

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    Joined:
    Apr 20, 2014
    Location:
    Va Beach, Va
    I have some homework to do to diagnose this issue. I have some engine experience but I am no master tech, more of a part swapper myself. I have some friends that know their stuff so I will need to rely on them but their schedules can be tough so help may be limited for now. In the meantime, I am looking for opinions from your past experiences. I understand there are a lot of possibilities.

    This is a 2000 twin-turbo (Precision 62-66) running low boost. The engine was tuned just under 600whp at 6.5lbs of boost. Other than upgrading the necessary external parts for the twins all internal engine parts are stock. I can list all the parts added if someone wants the whole scoop.
    I went to the 1/4mi dragstrip this past weekend for my first try with my Precision Turbo setup and made a few passes. Once I stopped wheel hopping from launching too hard with street tires all went smoothly. On Saturday I made 3 runs. Sunday's first run was similar to my final run on Saturday, the car ran well with no issues. After helping a friend with his car for a few hours I got back in line for another run. While idling for a few minutes as the line started to move I noticed smoke behind the car. I immediately got out and noticed it was from my exhaust. I turned the car around and went back to the pits. Unfortunately, it was already late in the day and there wasn't time for in-depth diagnosis as I had a few hours to drive to get home so with much disappointment I loaded the car on the trailer I borrowed and came home. Many thoughts passed through my head as I drove home. I really thought that maybe the problem had something to do with the scavenger pump for the turbos. At least I was hoping it was that simple. Now that I see it is just smoking from just the right side and I can hear the scavenger pump running it is highly unlikely that is an issue...That said, I have not done much more to diagnose. Mostly due to my work schedule. Here is what I know..I don't really see smoke until the engine is coming up to temp. The warmer the engine gets the worse the smoke. I plan to pull the plugs this weekend and look for an individual cylinder concern. I am hoping to have a friend come over to do a compression test as well. I guess am I am reaching out for help too soon but I am looking for ideas on maybe the top 3 or 4 possible issues to focus on. Does anyone else have any experience with a similar smoke situation? Just to note the engine has 20k miles. Please ask me anything you feel is relevant. I appreciate any help or recommendations the group can provide.
     
  2. steve e

    steve e Enthusiast

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    Oct 23, 1995
    Do a compression test on both banks, compare them, hope all is good and its something simple.
     
  3. 19GTS96

    19GTS96 Enthusiast

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    Nov 16, 2019
    Location:
    Lutz, Florida
    I'm not sure of your exact set up. But first I would Check your turbo output to the right side and see if there is any oil residue. That would help find or eliminate a turbo leak. If it looks clean move on to a compression and leak down test to pinpoint the cylinder burning the oil. If you get that far it could be a number of things. Valve seals, rings, head gasket to name a few. You know it is something that happens as it heats up so more than likely a expanding metal leak. Maybe you will get lucky and it's just bearings in the turbo.
     
  4. LenZ

    LenZ Enthusiast

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    Apr 20, 2014
    Location:
    Va Beach, Va
    Yesterday I was finally able to check a few things. All plugs on that side look pretty good with the exception of #2 which really wasn't bad. Unfortunately, my help could not make it so I did not have the ability to do a compression test yesterday. Through the process of elimination, I ran the car with one cylinder at a time unplugged and saw no difference in the smoke output. At this point, the compression test will be next but it appears that I may have an issue with the oil scavenger pump or possibly the lines to the passenger side turbo for the pump. It could even be a turbo oil seal allowing some small amount of oil into the hot side, in turn, causing the smoke burning on that side of the exhaust? I'll have to make time to call Precision and see if that is a thing? This is my first dealings with turbos so still learning the in and outs of them. If there is nothing internal to the engine causing the problem I will be deeply relieved as that could be very open-ended.

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  5. InTheZoneAC

    InTheZoneAC Enthusiast

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    Jun 24, 2016
    If you say the plugs are fine I'd start with the turbos being the culprit. Check the drain line from the turbos as well, if the drain is backed up the excess oil will potentially burn up. Make sure the drain is working with gravity and not against it (slanted or hill shaped drain lines)

    If too much oil is entering the turbos (no restrictor) and it cant drain fast enough that's another issue.

    Or the turbo could be in new of a rebuild if the feed and drain is good.
     
    Last edited: Apr 7, 2020

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