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Question: Why is exhaust fumes only coming out of one of the two tailpipes?

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tmac60, 2.5L 4 Cylinder, King George, VA, December 14, 2012, 03:21
 Rookie

My 2003 Altima has two tail pipes which are side by side coming out from the muffler. There was hardly any exhaust fumes coming out of one of the tail pipes. I stopped and got gas and noticed the tail pipe that exhaust fumes were barely exiting had a little smoke coming out whereas the tail pipe that "good" exhaust fumes were exiting, was not?

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  • Answer #1

    pushrod December 14, 2012, 04:35
     Master

    Cooler temps. these days, you will see vapor as warm exhaust gases meet cool air.
    Two tail pipes but a single exhaust pipe ahead of the muffler. One tail pipe emits warmer exhaust than the other.
    Normal operation! If it were an engine problem both tail pipes would be doing this and would not stop with change in weather.

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  • Answer #2

    Greg's Orange Auto (8410 Answers) , Orange, CA - (714) 361-9355
    globalhelper December 14, 2012, 06:09
     Master

    at times it looks like there are 2 exh pipes but one maybe a dummy pipe. it may be blocked in muffler. they do this for looks only.

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