Carbon Build Up on new engines?
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Thread: Carbon Build Up on new engines?

  1. #1
    Junior Soul
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    Jun 2011
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    St. Catharines, ON, Canada
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    Carbon Build Up on new engines?

    I've been curious to know what Kia has done to prevent carbon buildup that, in the past, has plagued Direct Injection engines.

    So I decided to write to Kia Canada and ask what their plan was to prevent this buildup.

    What I received was the most lame answer ever.

    Thank you for contacting Kia Canada. We appreciate your interest toward the Kia Soul.

    The new 2012 Kia Soul was redesigned and received a new engine. For more technical information, we recommend that you contact a Service Representative at a dealership near you as we do rely on them for technical assistance.

    If you have any additional questions or concerns you may wish to contact Kia Canada's Customer Experience Department directly by calling 1-877-542-2886, from Monday – Friday, 8:30 am – 5:30 pm Eastern Standard Time.

    We appreciate the time you took to communicate with us.

    Respectfully,

    Sandy
    Consumer Experience Representative Représentante au service à la clientèle

    Kia Canada Inc.
    180 Foster Cr., Mississauga, Ont., L5R 4J5
    Tel: (877) 542-2886 Fax: (866) 267-7424
    Email:contactkia.ca Kia Canada

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  3. #2
    Junior Soul
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    Melbourne Beach, Florida
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    Quote Originally Posted by Skippy905 View Post
    I've been curious to know what Kia has done to prevent carbon buildup that, in the past, has plagued Direct Injection engines.

    So I decided to write to Kia Canada and ask what their plan was to prevent this buildup.

    What I received was the most lame answer ever.

    Thank you for contacting Kia Canada. We appreciate your interest toward the Kia Soul.

    The new 2012 Kia Soul was redesigned and received a new engine. For more technical information, we recommend that you contact a Service Representative at a dealership near you as we do rely on them for technical assistance.

    If you have any additional questions or concerns you may wish to contact Kia Canada's Customer Experience Department directly by calling 1-877-542-2886, from Monday – Friday, 8:30 am – 5:30 pm Eastern Standard Time.

    We appreciate the time you took to communicate with us.

    Respectfully,

    Sandy
    Consumer Experience Representative Représentante au service à la clientèle

    Kia Canada Inc.
    180 Foster Cr., Mississauga, Ont., L5R 4J5
    Tel: (877) 542-2886 Fax: (866) 267-7424
    Email:contactkia.ca Kia Canada
    Why is it a lame answer. They told you what to do! Have you called

  4. #3
    Junior Soul JLangton's Avatar
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    SE Texas
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    I agree that this is a lame answer. Most of the Dealership service departments are useless for technical information, much less to answer any questions like this. I'll bet that their answer is to sell you a "valve cleaning" service every 40-50K miles. Carbon buildup on GDI engines has been an issue, and some manufacturers are having more problems with it than others are. Currently, I don't know of a definitive answer as to how one could prevent it.
    JL

  5. #4
    Banned
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    Quote Originally Posted by JLangton View Post
    Most of the Dealership service departments are useless for technical information,

    Don't be so hard on them. I'm sure they can help with lawnmowers or blenders, and the best guy in the shop might even help with microwaves.

  6. #5
    Junior Soul
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    Quote Originally Posted by norton View Post
    Why is it a lame answer. They told you what to do! Have you called
    The question is related to the design/engineering of the engine and what they have done to overcome the carbon buildup problem.

    Since this is not a question about how to fix something that has already broke, why would I talk to a service rep at the dealership.

    No service guy is going to know what the design team did to the engine to overcome buildup. All they will say to me is "Just come in every 20,000km for a valve cleaning". Those guys are trained on how to fix things, not how to design and engineer things.

    It's like asking Kia for a price on a new Soul, only to be told to speak to the accounting dept for that information.

  7. #6
    Junior Soul
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    Location
    Utah, USA
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    Quote Originally Posted by Skippy905 View Post
    The question is related to the design/engineering of the engine and what they have done to overcome the carbon buildup problem.

    Since this is not a question about how to fix something that has already broke, why would I talk to a service rep at the dealership.

    No service guy is going to know what the design team did to the engine to overcome buildup. All they will say to me is "Just come in every 20,000km for a valve cleaning". Those guys are trained on how to fix things, not how to design and engineer things.

    It's like asking Kia for a price on a new Soul, only to be told to speak to the accounting dept for that information.
    The tech may know if the EGR valve has been deleted as that's the common way to reduce carbon deposits in a direct injection system.

    Not all tech's are wrench turning monkeys. I have no doubt some wouldn't have a clue. I also have no doubt the ones that like their job and keep up with technology trends would be able to logic it out. Ask the tech to look up where the EGR valve is in the service manual if they're part of the group that doesn't have a clue.

    I'm not a professional mechanic. I didn't design the engine. Even I can tell you that if the engineers did an EGR delete it was to reduce carbon deposits.
    Last edited by GixxerSixxer; 09-16-2011 at 08:59 PM.

  8. #7
    Junior Soul Katmandoitall's Avatar
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    Techron Concentrate will clear any carbon build up. Just add
    to a near empty tank and fill with 89 octane (nothing higher).
    Take it for a highway spin getting engine up to a good clip. If
    done before each oil change or 3,000 miles will keep carbon out
    of the engine and keep the injectors clear. No need for cleaning
    by mechanic if it's used on schedule. I dump the entire bottle
    in when using it.

    One major cause for carbon build up is the idling of cold engines
    to make your car toasty on cold mornings. DON'T DO IT. Just
    wear a good coat and hat. Get in the car, start it up and GO.
    That's the best way to warm it up lowering risk of carbon build up.

    Next use lower octane gas as it has fewer hydrocarbons in it. IF
    travelling longer distances at highway speeds you can use higher
    octane in warmer weather. It burns cooler than low octane and will
    help control engine temperature in hot weather. Don't use it in cold
    weather. To many unburnt hydrocarbons will cause carbon build up.

  9. #8
    Junior Soul
    Join Date
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    Toronto
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    Quote Originally Posted by Katmandoitall View Post
    Techron Concentrate will clear any carbon build up. Just add
    to a near empty tank and fill with 89 octane (nothing higher).
    Take it for a highway spin getting engine up to a good clip. If
    done before each oil change or 3,000 miles will keep carbon out
    of the engine and keep the injectors clear. No need for cleaning
    by mechanic if it's used on schedule. I dump the entire bottle
    in when using it.

    One major cause for carbon build up is the idling of cold engines
    to make your car toasty on cold mornings. DON'T DO IT. Just
    wear a good coat and hat. Get in the car, start it up and GO.
    That's the best way to warm it up lowering risk of carbon build up.

    Next use lower octane gas as it has fewer hydrocarbons in it. IF
    travelling longer distances at highway speeds you can use higher
    octane in warmer weather. It burns cooler than low octane and will
    help control engine temperature in hot weather. Don't use it in cold
    weather. To many unburnt hydrocarbons will cause carbon build up.
    You need to familiarize yourself with how a DI engine works. There's 0 nada absolutely no fuel in the intake tract. There's no EGR on most CVVTs. Fuel system cleaners will never reach the back of the valves or valve seats because of this.

    Using correct octane, making sure you're at operating temp and doing WOT runs once in a while helps resist and undo some build up but it still builds up faster than old MPFi systems.

  10. #9
    Junior Soul TurboMinivan's Avatar
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    Lehi, Utah
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    2012 + A/T Alien
    Quote Originally Posted by GixxerSixxer View Post
    The tech may know if the EGR valve has been deleted as that's the common way to reduce carbon deposits in a direct injection system.
    Sadly, the decision to remove EGR isn't up to the manufacturer. If the emissions output is too high without EGR, then the government isn't going to let Kia sell the car without it.

    Quote Originally Posted by GixxerSixxer View Post
    Even I can tell you that if the engineers did an EGR delete it was to reduce carbon deposits.
    I will postulate that, as a rule of thumb, every engineer would be happy to design every engine without EGR since it is essentially an emissions-controlling add-on and little more. But if other methods don't bring the engine's output to within federal specifications, then you have to make external changes. Why would anyone add a needlessly complicated external system to an engine if there were an easier, simpler way to achieve the same result?

    That's how I see it, anyway, though I am not an engineer--I'm just an auto enthusiast who enjoys spinning wrenches on his own cars for fun.

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