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2001 Honda Accord

Question: why does the muffler have a black build up?

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Visitor, 2.3L 4 Cylinder, Houston, TX, February 18, 2011, 07:25

whaen I put my finger in the muffler it comes out very black

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  • Answer #1

    Tyreguy February 18, 2011, 08:53
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     Master

    Its carbon buildup. Carbon is a by-product of combustion.
    A poorly tuned/running vehicle will produce excess amounts of carbon which can create all kinds of problems.

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