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    Thread: Interesting article on carbon buildup in MotorAge's online mag

    1. Member vwlippy's Avatar
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      02-25-2013 09:50 AM #1
      Few interesting points made (not saying I agree).

      1. VW claims our poor fuel in the US is one reason for the buildup.
      2. VW still says to use a quality fuel injector cleaner.

      Discuss

      http://www.searchautoparts.com/motor...=0,0&cid=95876

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      02-25-2013 11:59 AM #2
      Good article but still leads to the inevitability that DI engines need manual TLC, with either your hands or with your wallet...
      #KeepFightingMichael

    3. Member pjunk1's Avatar
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      02-25-2013 12:11 PM #3
      speaking of which, i needed a manual cleaning at 20k. now, i'm at 41k and hoping for a CEL (misfires) so the dealership can bill the work to the AofA instead of my wallet.

      the normal symptoms are coming back but not as bad as when i was at 20k. my luck, i won't start to see more obvious symptoms til after the warranty runs out.

    4. Member dmorrow's Avatar
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      02-26-2013 08:45 AM #4
      Also from the article -

      Since fuel is not sprayed on the backside of the intake valves where fuel detergents can do their job, deposits build quickly.”
      So how will the high detergent fuel and fuel injector cleaner do a good job of cleaning the back side of the valves?

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      02-26-2013 10:25 AM #5
      Quote Originally Posted by dmorrow View Post
      "Since fuel is not sprayed on the backside of the intake valves where fuel detergents can do their job, deposits build quickly.”
      So how will the high detergent fuel and fuel injector cleaner do a good job of cleaning the back side of the valves?
      I thought the exact same thing when I read that. Did I read somewhere [else] that the newer FSI motors will be coming with an extra injector in the intake track?

      Brian
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    6. Member NYCameron's Avatar
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      02-26-2013 10:30 AM #6
      Quote Originally Posted by lausch View Post
      I thought the exact same thing when I read that. Did I read somewhere [else] that the newer FSI motors will be coming with an extra injector in the intake track?

      Brian
      I thought that the TSI motors featured that?
      2006 Audi A3 Sport Package - Neuspeed Intake | APR Stage K04 | Eurocustom 3'' DP | Dogbone Mount Insert | BSH 27mm RSB | 3000k HID Fogs | LED Tails (Inner) | Euro Tails (Outer)

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      02-26-2013 10:32 AM #7
      Quote Originally Posted by dmorrow View Post
      So how will the high detergent fuel and fuel injector cleaner do a good job of cleaning the back side of the valves?
      It won't. But it allows the dealer to blame the customer for the problem.
      Quote Originally Posted by MachnickiA3 View Post
      stick that in your "fleshy patch"

    8. Member dmorrow's Avatar
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      02-26-2013 11:38 AM #8
      Quote Originally Posted by MisterJJ View Post
      It won't. But it allows the dealer to blame the customer for the problem.
      I agree, customer is unhappy with the carbon buildup and complains. VW/Dealer says "you should probably call the oil companies/government (basically impossible) they're the ones that produce/allow the bad gas"

      Problem solved and they can sell more fuel injector cleaner/services and customer goes home and complains about big oil and the government (both who they already hate)...

    9. Member vwlippy's Avatar
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      02-26-2013 12:33 PM #9
      Quote Originally Posted by dmorrow View Post
      Also from the article -



      So how will the high detergent fuel and fuel injector cleaner do a good job of cleaning the back side of the valves?
      Yeah, makes no sense to me and they didn't try to explain it either.

    10. Member pjunk1's Avatar
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      02-26-2013 01:09 PM #10
      simply put...

      DI = CB

      i would guess, at least hope, Audi will eventually develop a DI/PI engine in the future.

    11. 02-27-2013 12:03 PM #11
      So VW can honestly say that they will sell cars here without first acknowledging the standard for gasoline in our country and making the correct alterations to their product?

    12. Member Travis Grundke's Avatar
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      02-27-2013 01:39 PM #12
      The new Audi sourced Gen3 EA888 TFSI (1.8 and 2.0) include indirect injection as well as direct injection. While Audi's big selling point is that this is to improve fuel economy and torque, the reality is that the pleasant side effect will be to reduce carbon buildup since there will be a small amount of fuel washing over the valves.

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      02-27-2013 09:12 PM #13
      Quote Originally Posted by lausch View Post
      Did I read somewhere [else] that the newer FSI motors will be coming with an extra injector in the intake track?
      Quote Originally Posted by Travis Grundke View Post
      The new Audi sourced Gen3 EA888 TFSI (1.8 and 2.0) include indirect injection as well as direct injection. While Audi's big selling point is that this is to improve fuel economy and torque, the reality is that the pleasant side effect will be to reduce carbon buildup since there will be a small amount of fuel washing over the valves.
      Thank you.

      Brian
      2007 Ibis White A3 2.0T S-Line DSG

    14. Member daniel.ramirez's Avatar
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      02-28-2013 03:24 PM #14
      I don't know if the fuel makes any difference, but I'm at 75,000 miles, I live in México, there´s only one gasoline provider, state owned PEMEX, I only use the premium gas, I had the Intake Flap Motor changed a few weeks ago and the mechanic told me no significant carbon deposits were found, I was absolutely sure carbon buildup was there, but none were found... makes you wonder!
      2009 A3 S-line, RNS-E, Unitronic, and some more stuff...

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      02-28-2013 04:15 PM #15
      Quote Originally Posted by daniel.ramirez View Post
      I don't know if the fuel makes any difference
      Nope. Seems like FSI has medium to big problem while TFSI has small to medium problem. My FSI had really bad buildup while the wife's TFSI had barely any.
      Quote Originally Posted by MachnickiA3 View Post
      stick that in your "fleshy patch"

    16. 03-05-2013 04:07 PM #16
      I don't know if the fuel makes any difference, but I'm at 75,000 miles, I live in México, there´s only one gasoline provider, state owned PEMEX, I only use the premium gas, I had the Intake Flap Motor changed a few weeks ago and the mechanic told me no significant carbon deposits were found, I was absolutely sure carbon buildup was there, but none were found... makes you wonder!
      Possible lack of ethanol where you live?

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