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My EGR valve was replaced only 500 miles before this ordeal, so I'm sure most of the carbon buildup occurred before that. If someone could convince me that the new EGR valve would correct/significantly reduce carbon buildup, I may stop my search for a new car. I must have asked the SA 10 times (we talked a lot over the 3+ weeks they were correcting the problem) about preventing the buildup and he never mentioned the new EGR. I tend to put 20 - 25k miles a year on my cars and would love to keep this one a while.
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