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Carb Fuel basic questions

Discussion in 'XJ Technical Chat' started by DJCougar, Mar 26, 2008.

  1. DJCougar

    DJCougar New Member

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    How does fuel get into the cylinders on the xj650 engine?

    I know its an ignorant question but does the fuel squirt or dribble into all 4 cylinders from each carb butterly? Thanks
     
    DJCougar, Mar 26, 2008
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  2. mrcarb

    mrcarb Member

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    Your engine is an air pump that sucks in the air/fuel mixture.
     
    mrcarb, Mar 26, 2008
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  3. Ass.Fault

    Ass.Fault Active Member

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    very basic answer.
    Fuel and air mix and atomize
    piston moves downward creating a vacuum, sucking that mixture through the carb(atomizing in the process)
     
    Ass.Fault, Mar 26, 2008
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  4. RickCoMatic

    RickCoMatic Well-Known Member

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    To appreciate how well you can regulate the Various "Flows" of Fuel into the Cylinders ... you should Google a few Carb sites and read-up on Carb theroy.

    Once you begin to understand the theroy ... you'll understand why the Bike runs so much better with clean carbs and vacuum levels well synchronized.
     
    RickCoMatic, Mar 26, 2008
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  5. DJCougar

    DJCougar New Member

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    oh not the theory behind it, the actual process on this bike...like the fuel goes into the fuel rail, then goes into the float, etc

    I took the carbs off my bike and didnt see any way for the fuel to get into the cylinders other than the butterfly on each carb

    is this correct?
    thanks
     
    DJCougar, Mar 26, 2008
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  6. DJCougar

    DJCougar New Member

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    ahh it forms into a gaseous mixture
     
    DJCougar, Mar 26, 2008
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  7. schmuckaholic

    schmuckaholic Well-Known Member

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    Exactly. The gas flows from the tank, through the fuel tubes, into the float bowls. Air passing through the carb body draws fuel up through the jets in the float bowl up into the airstream, where it evaporates. This mixture is then pulled into the cylinder and is burned. The butterfly helps to regulate the amount of air passing though the carb.
     
    schmuckaholic, Mar 26, 2008
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