rustybay Posted March 12, 2020 Report Share Posted March 12, 2020 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 Quote Link to comment Share on other sites More sharing options...
2stroke4stroke Posted March 12, 2020 Report Share Posted March 12, 2020 Use the bike! The only way to get rid of the build up of gunk is to get the bike nice and hot. Or take the exhaust apart and clean it out (not always so easy). Quote Link to comment Share on other sites More sharing options...
rustybay Posted March 12, 2020 Author Report Share Posted March 12, 2020 Thank you for the advice. I assume that it's been over oiled Quote Link to comment Share on other sites More sharing options...
b40rt Posted March 12, 2020 Report Share Posted March 12, 2020 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. Quote Link to comment Share on other sites More sharing options...
pindie Posted March 12, 2020 Report Share Posted March 12, 2020 Good advice^^^^ Quote Link to comment Share on other sites More sharing options...
austin6728 Posted March 13, 2020 Report Share Posted March 13, 2020 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 Quote Link to comment Share on other sites More sharing options...
rustybay Posted March 13, 2020 Author Report Share Posted March 13, 2020 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 Quote Link to comment Share on other sites More sharing options...
tshock250 Posted March 13, 2020 Report Share Posted March 13, 2020 Yep not stationary though, a proper ride in the countryside under load. Then you’ll also have an idea if the bike is too rich, Quote Link to comment Share on other sites More sharing options...
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