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Thread: petrol coming from carb breather pipe

  1. #1
    apriliaforum expert JJonth's Avatar
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    petrol coming from carb breather pipe

    OK I just looked my bike over after coming back from my dealer and its not my shock (which is also knackered) dripping onto the exhaust, its petrol from that small pipe coming from the carb through the swing arm over the expansion chamber. Whats wrong and what do I need to do to it to stop it from doing it?? Ive repositioned it down the side of the exhaust for now to stop it from steaming away whenever I stop. Its not pouring out, just the odd drop so often.

  2. #2
    Post Whore Craig's Avatar
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    Sticky float height needle valve, its sticking open letting the fuel that hasnt being used yet ill into the carb which is inturn coming out of the breather.

    Turn your fuel off and let the bike run out of fuel and it wont drip for aslong, but idealy clean your carb and check the needle valve.
    VAG Cars - www.vagcars.co.uk - North East VAG Owners Club

  3. #3
    apriliaforum expert JJonth's Avatar
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    It only seems to do it when the engine is running though, or doesn't that make any difference? i'll check the carb out tomorrow.
    Last edited by JJonth; 04-14-2004 at 11:37 AM.

  4. #4
    Post Whore Craig's Avatar
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    Sounds like the floats sticking, check the needle valve / float valve.
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  5. #5
    apriliaforum expert JJonth's Avatar
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    Originally posted by Craig
    Sounds like the floats sticking, check the needle valve / float valve.
    when I open that up what should I expect to find wrong with it? And what should I use to stop it from sticking? WD40 or sommet??

  6. #6
    Post Whore Craig's Avatar
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    Could just need cleaning out. Simple as that
    VAG Cars - www.vagcars.co.uk - North East VAG Owners Club

  7. #7
    apriliaforum expert JJonth's Avatar
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    Cheers m8, I'll try it out.

  8. #8
    Post Whore Craig's Avatar
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    Sweet, all you will need to do is remove the airbox, remove the carb and undo the brass nut in which the jet goes into, this will allor the float bowl to come off, then you will just need to clean, and check the valve / pointed metal with rubber tiped part is lying right and sealing in the iten it goes into.

    You will see the valve i am going on about attatched to the floats.
    VAG Cars - www.vagcars.co.uk - North East VAG Owners Club

  9. #9
    apriliaforum expert JJonth's Avatar
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    OK then, cheers!

  10. #10
    apriliaforum expert JJonth's Avatar
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    I got as far as taking the airbox off and then hadn't a clue what next as I have no idea what anything is. I'll take it in tomorrow, might aswell as they don't charge me anything.

  11. #11
    apriliaforum expert JJonth's Avatar
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    sorry, that last post makes me look completely useless lol. I do know what everything is, I just dont fancy taking it to bits. I always worry about losing shit and not remembering how to put it back together.

  12. #12
    Post Whore Craig's Avatar
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    Ahh well if its free you may aswell

    BTW - the hard parts over if you have got the airbox off
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  13. #13
    apriliaforum expert JJonth's Avatar
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    lol, i know, its a bitch trying to squeeze it out. Ive seen my uncle take the carb off a Honda RS a125 and take it to bits about 15 times and I obviously didn't take any of it in, lol.

  14. #14
    apriliaforum expert JJonth's Avatar
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    Ok im trying again and do you mean that big brass nut at the bottom? Coz its quite hard to get off lol. Is it clockwise or anti to get it off? Dont wanna end up tightening it even more.
    Thanks

  15. #15
    apriliaforum expert JJonth's Avatar
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    Ok the bastard really wont come off. Im assuming its anti clockwise to get it off, but it wont.

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