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Thread: BLACK SMOKE IN ALTO on petrol

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    Default BLACK SMOKE IN ALTO on petrol

    my suzuki alto vxr 2007 give black smoke on petrol but on cng there is no smoke. what is the problem??????? and where to fix it????????


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    your car is running rich(more fuel being fed to engine) its not a big issue,go to your mechanic ask him to adjust it from carb settings,else it could be due to very old petrol lyng unused in your tank since long or bad pso oil aswell.
    get it done.
    ''Peace is an unstable equilibrium,that can only be preserved by acknowledged supremacy and...equal power.'' ''We give up the fort when there is not a man left to defend it.''

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    same thing happened with me,i think its just because of bad fuel these days ... Caltex and Total's petrol is best ...

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    Low Quality Petrol
    Drive Safe

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    bad fuel and air mixture,ur car is throwing unburnt petrol from exhaust,correct the mixture it will be all right
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    because of old fuel
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    old fuel? wtf
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    Running rich
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    old fuel means that the fuel in ur tank is lying there from a long time ...

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    Quote Originally Posted by usmanulamin View Post
    old fuel means that the fuel in ur tank is lying there from a long time ...
    and? the fuel gets fermented?

    @topic creator
    check your plugs make sure they arn't fouled i hope you arent using some fancy 4tip plugs
    ask a mechanic to adjust your jettings
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  11. 03-05-2012, 04:43 PM

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    Quote Originally Posted by SpoonMotorSports View Post
    old fuel? wtf
    i dont know the reason why it happens but know this because i had a mini pajero,wjose fuel pump got short,tank was half filled,car ran on cng for a long time atlast when i put in a new fuel pump car started to give black smoke,took off the fuel tank drained the fuel which had blackish sort of colour,dont know the cause but i drained it and poured in new gasoline,car got fine.
    ''Peace is an unstable equilibrium,that can only be preserved by acknowledged supremacy and...equal power.'' ''We give up the fort when there is not a man left to defend it.''

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