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  1. #1
    Member
    Join Date
    Aug 2005
    Location
    Ohio
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    38
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    583

    Black
    97 Formula

    What can cause a car to run rich? And how to fix?

    I'm pretty sure my dads van is running rich, because I can smell the fuel vapors form the exhaust and he isn't getting the best of gas mileage [I know it's a van, but it can do better]. So I'm planning on doing plugs, wires, oil change, tranny fluid change, engine cleaner (the stuff where they use a machine to clean out the motor, like that stuff in a can you can buy at the GM dealer). What else could I do I see if the motor is running right?

  2. #2
    I'm out there so hide!!!! D!ck's Avatar
    Join Date
    Oct 2005
    Location
    TULSA, OK
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    1,140

    Black & Brilliant Silver
    1999&1997 SL600 6.0 V12's

    probley with a tune up it will fix its self. plugs and timing, plus everything else. aircleaner

  3. #3
    I'm out there so hide!!!! D!ck's Avatar
    Join Date
    Oct 2005
    Location
    TULSA, OK
    Posts
    1,140

    Black & Brilliant Silver
    1999&1997 SL600 6.0 V12's

    i thought it was gona be an ls1 question. i was gona say headers make um rich, tune fixes it.

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