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Thread: Hello, new guy here Gen 4 5.3, can someone shed some light

  1. #1
    Potential Tuner
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    Jun 2024
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    Question Hello, new guy here Gen 4 5.3, can someone shed some light

    Hello all, i just did a full DoD & VVT delete, as well as installed a Gen 3/4 Truck Norris cam (212/22X, .552"/.552") with beehive springs (SP011-16) in my 2013 Tahoe PPV flex fuel.

    My friend sent me a file from a Tahoe he had with the same cam + DoD & VVT delete.

    I had did some mild stuff based off of a youtube video that got the engine running better than the stock 5.3 base file I had saved from before the install.


    I wrote the file my friend sent to me and it did make the vehicle idle better and drive a bit smoother without completely dying out.

    The idle is still not completely as calm as i suspect it should be, and there is white smoke coming out of the tailpipe during idling. I know the engine parts are going to be breaking in for some time and what not.

    Here is the file aswell as a log from after writing it with some idling aswell as some slow driving through my neighborhood and out on the main road.

    Engine 101.hptEngine 101 scan.hpl

    Could someone take a look at these and give me some pointers as to what to change.

    i have alot to learn.

    And please pardon my username, my girlfriend made me this account as i was not receiving the emails to retrieve the account that i did have. Im able to sign into the main site with my credentials, but not this one.
    Last edited by Sprinklesxoxo; 06-16-2024 at 12:31 PM.

  2. #2
    Advanced Tuner
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    White smoke means you're buring coolant. Blue smoke means your buring oil. Black smoke means your running rich.

  3. #3
    Potential Tuner
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    Jun 2024
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    its light light blue, its not steam, i did valve seals along with the springs.

    Its not BELCHING, but it is coming out. Maybe the valve seals weren't good. I used stock valves.
    Last edited by Sprinklesxoxo; 06-16-2024 at 01:32 PM.

  4. #4
    Senior Tuner TheMechanic's Avatar
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    Jan 2014
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    Might have cut a/the valve seal(s) when installed. If you suspect this give it a good cruise in a safe place. Coast down to a near stop with it in decel fuel cut. As soon as it wants to go out of DFCO shut off the engine and pull the plugs. Should give you an indication with either fresh oil or at least an indication of oil. If not it could also be PCV and AFM. Attached the bulletins
    valve cover.pdf

    Document ID_ 4036576.pdf