unknown leak from middle of CBR125 (where the stand is)

fourten · Spanner Monkey Joined: 27 Dec 2007 Karma :

There's a really slow leak (maybe one drop a day or two) of a dark grey metallic thick liquid and i have no idea what it is? I know i'm really silly for not checking it out properly but i've looked and so far can't see where the leak is coming from... Will take a proper inspection tomorrow but wondered if you had any thoughts?

I notice it in the mornings, and every other day there's been a new droplet.

Grateful for any money (two pences)/ advice, cheers
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Paddy Blake · World Chat Champion Joined: 29 Jun 2006 Karma :

Do you oil your chain often.It could just be oil coming from around the
front sprocket that flies of the chain.

Paddy.

Ben. · World Chat Champion Joined: 10 Jul 2007 Karma :

chain lube?
its not petrol, and unless you have freaky coolant or oil i dont know what else it would be, whereabouts is the 'middle' of the bike?
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Mudskipper · World Chat Champion Joined: 22 Aug 2006 Karma :

I'd agree on it being chain gunk. I'd take your front sprocket cover off, I bet you'll be horrified at the slime lurking there!

Toothbrush and degreaser (I use Hyperclean) or WD40 is better than nowt.

I'd get it cleaned asap if it is that, as the metallic bits will be grinding your chain down nicely.
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Finglonga · World Chat Champion Joined: 27 Jul 2004 Karma :

What does it smell of? If not fuel then as others have said chain lube most likely.
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fourten · Spanner Monkey Joined: 27 Dec 2007 Karma :

i've toothbrushed and lubed my chain about 2/3 times in the past 2 months... so highly likely to be chain lube as suggested...The 'middle' being where the side stand is (when upright)

No, doesn't smell like fuel... But the chain lube i use is the spray on lubricant - it's transparent yellow in colour and quite runny, not thick and dary grey metallic... But i would guess it's the 'gunk' and grime sticking to the lube.

I've cleaned the chain guard (i use WD40 to clean) i'm quite sure it's pretty clean..and i checked the engine oil level- was over the full mark..

Thanks guys Karma

will give it a proper clean again this weekend to put my mind at ease, and hopefully stop this freak leak.
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chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

After chain lube has mixed with road grime and sprocket shavings it will be dark grey and metalic.
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