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Oily fuel mix coming from exhaust


rustybay
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Hi all

I've just bought a 1996 beta techno it had not run for 5 years the seller fuel it cannot it running. 

Due to having seized brakes which have rebuilt. Its time to start the bike. 

I've replaced the air filter and spark plug 

The bike kicked over second time but a oily black fuel mix as come out of the exhaust  it seems to be a fair amount

As anyone any ideas what this can be and how to resolve it

Regards 

Wayne 

 

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5 minutes ago, rustybay said:

Thank you for the advice. 

I assume that it's been over oiled.

Not necessarily, if it doesn't get up to temperature, of have a bit of a blast occasionally, most 2 strokes will build a bit of oil in the exhaust.

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remove the exhaust remove packing hang it and burn it out with a heat gun. i had the same problem with my nephews beta, I called beta UK for advise and was told to use a good quality semi synthetic 2 stroke oil NOT fully synthetic as trials bikes tend not to run at high revs enough to burn off the oil. (72ml oil to 5lt fuel)

Seems to have worked for me

think there is a post somewhere on here with the same advice also youtube has some videos

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Hi

Thanks for the advice but when I kicked it over last night there seems to be loads running out where the rear box meets and it smells really strong of petrol. 

Could it be the float in the carb

Should I just keep running it until it gets red hot.

Regards 

Wayne 

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