petrol leak help please

[bob_711]

i have a 2006 ybr 125 and i noticed this happen for a coupe of days now, there is a small black pipe with a rubber thing on the end underneath the engine at the back near the kick stand that is slowly dripping unleaded when its sat in the garage over night does anyone know what could be causing this thanks

[DJB666]

My first instinct would suggest to you, check the fuel pump? I'm no genius on bikes as such, but this is what I would do:

stand the bike, engine off, and disconnect fuel filter, so its empty, re-attach and see if she is still filling up? if not, perhaps drain the carb? But these are my personal opinions
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DJB666
The older I get the faster I was

[Efes123]

Pics of the tube would help. I'm not aware of any fuel pump on a 125. It sounds like a breather pipe? Vacuum issue?
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[bob_711]

sorry was the best angle could get a pic from hopefully someone will know what it is
https://img571.imageshack.us/img571/8562/img9975oi.jpg

[Vincent]

Follow the pipe and see where it leads to. It's probably the carb overflow though - caused by a sticking or incorrectly adjusted float needle.

It's not Fi is it?
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[bob_711]

as far as i know the 2006 has a carb rather than fuel injection and i tried i couldnt see where it went to what would be the best thing to do if carb is sticking?

[Vincent]

Couple of things you can try - turn the fuel off, (if you can), and start the bike letting it use the fuel up in the carb. Then just turn the fuel on again - this'll sometimes flush through anything stuck on the float needle. Or - tap lightly on the side of the carb float bowl with the end of a screwdriver or something similar. If it's something more permanent, or the float height needs re-setting, the carb bowl will have to come off.
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[Vincent]

Have you filled the tank right up recently? Some caps have overflow pipes - could be that.
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[bob_711]

is doing any of this easy? no experience at all with bike mechanics and i topped up a fiver the other day but that only got it to just over a half and i didn't see any overflow pipe on this bike

[Efes123]

Looks a bit chunky to be coming off the carb? I wonder if your drain screw on the carb has worked loose.

https://www.dogfriendlysuffolk.com/bikepics/YBR125-Carb.jpg

Number 3?
____________________
Honda Goldwing GL 1000 Current love
Honda VT500 ED - SOLD
Projects Suzuki GS125 Done, then stolen - Kawasaki GPX750R SOLD - Honda VF750S SOLD

[bob_711]

went to the garage with it and they said the carb probably needs cleaning out and that it probably was the overflow they said it would cost £45 for them to do it so think im going to try it myself tomorrow and it is just a small rubber pipe that goes into that big rubber spout thing just couldn't get a pic from the top with being behind the brake pedal and will have to have a look about the drain screw thanks for the ideas on what it could be hopefully 1 of them will sort it without having to shell out

[Vincent]

If possible, get yerself a manual, it'll have clear instructions and pics on how to do it With some bikes, you can remove the float bowl by loosening the carb and spinning it around rather than removing it completely. Might be an idea to remove the tank and tip the fuel out to help get rid of any crud in there.

Do you know how a toilet systern "ballcock", (oo-eerrr), works? Carb float valves are very similar - as the liquid rises, the floats move up and shut the fuel valve via the float needle

£45 for the garage will probably be for an hours labour - minimum charge.

hth
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[bob_711]

i've tightened the screw mentioned as wasnt completly tight and shall just have to wait and see if that stops it, if not my gf's dads best friend isa biker and a machanic so said he would take a look so with any luck all will be sorted with just tightening that screw anyway thanks for the help

[Yoyo]

First off make sure you haven't over tightened it. Otherwise it will fur up, and be a right bitch the only time you do need to use it.

Second, removing the float bowl is quite easy and can be done with the carbs in place. Just get the right size screw driver bit and pair of mollies if you can't get in with a full screwdriver.

Same as everything spend a bit of time doing it right the first ime and from then on it will be a piece of pie.
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[gandy666]

sounds like carb is overflowing because the float bowl has jammed / rubber has perished / needle stuck / crap vacuum due to hardened rubber / etc

buy a carb rebuild kit - about 12 quid depending on the bike.

piece of piss to fit. usually can get the carbs off a wee bike without having to take the tank off, airbox out, battery out etc. should just be a case of unscrewing the bowl, swapping the parts and makin sure everything is snug. if the floats just fall out when you unscrew the bowl, I would say this is the problem. very common.

if the carb is full of shit get it ultrasonicked, tho will cost you a bit.

pipe usually comes from bottom of the airbox.