Carby Why do i have two fuel lines on my carb..

Discussion in '2-Stroke Engines' started by happyfeet, Aug 10, 2007.

  1. happyfeet

    happyfeet Guest

    Hi guys and gals, this is my second post so please be patient and nice with me. My problem is i have two fuel lines coming out of my carb, one is big and the other one is small. I have searched the forum but i cannot find any information on it. I don't want to connect it wrong can anybody help me please. happyfeet:cool:
     

  2. OldPete

    OldPete Guest

    What kind of engine?
    If it uses a multi-position diaphram type carburetor...the second line is return.
     
  3. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:my ROBIN engine has 2 lines also. i also presumed that one was a return line. on my fuel-injected chevy engine, there was a return line. on my carbureted chevy engine, i also installed a return line when i installed a gigantic fuel pump to feed my carburetor. this wass to ensure that i could supply the carb with maximum volume of fuel for high demand. whatever fuel that the engine did not need was returned to the tank.
     
  4. HoughMade

    HoughMade Guest

    If you are talking about a Honda GXH50 or clone, the one that comes off the left as you are look at the carb side is to drain the carb for storage. The other in the fuel supply to the engine.
     
  5. happyfeet

    happyfeet Guest

    Ok its deffinetly not a four stoke, it says starfire on there i have taken some pictures but how do i include them in my reply.

    i think it might be what HoughMade is talking about. can somebody have a look and let me if it is, thanks.
     
  6. happyfeet

    happyfeet Guest

    here are the pictures, thanks.
     

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  7. HoughMade

    HoughMade Guest

    Well, I was talking about a 4 stroke, snd since it comes off the top, I doubt it is for a drain...gravity working the way it does. ;)
     
  8. gone_fishin

    gone_fishin Guest

    looks like "overflow" to me.

    everyone should keep their "engine type" up to date, in your profile, as it helps others help you.
     
  9. happyfeet

    happyfeet Guest

    :cool:I just found out what engine it is, its called starfire then it says grubee.com if that helps. Happyfeet.
     
  10. OldPete

    OldPete Guest

    The bottom hose in the second pictar is the float bowl vent.
    If the needle seat leaks, fuel will dribble out of that line, fairly fast I might add.
     
  11. happyfeet

    happyfeet Guest

    i see, so the little fuel line is so the extra fuel can come out of the tank if it overflows. so i guess that means i dont have to connect it to anything then (the little one) ?
     
  12. OldPete

    OldPete Guest

    The flote inside the bowl has a cone shaped tip attached to it that seats inside a brass fitting that shuts off fuel when it gets to the proper level in the bowl. IF this seat leaks the carb will flood fuel into the engine and make it impossible to start. The line we are talking about will discolor from fuel vapor but should never dribble fuel. If it ever does dribble fuel, remove the bowl and check for dirt/grit.
     
  13. happyfeet

    happyfeet Guest

    Thanks for all the advice and guidance, i know understand exactly what it is for:D happyfeet.
     
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