dantxtpro Posted March 31, 2014 Report Share Posted March 31, 2014 I used my bike the other day and when travelling on a road section I noticed after a duration of high revs ( in 6th gear) there was masses of blue smoke pouring from the exhaust. I changed the fuel as thought the mix may have been to rich and seems ok now but just wondered why after running cleanly for over an hour that it only started bellowing smoke after the high revs. By nature 2 strokes are comfortable with high revs? Quote Link to comment Share on other sites More sharing options...
copemech Posted March 31, 2014 Report Share Posted March 31, 2014 You will get heat into the muff which will burn off the old accumulated oil and grunge. Constant throttle load in the mid range of revs would not normally hurt them, although you may be well advised to increase the oil in fuel ratio a bit to say 50:1 for long runs. Higher revs up into the range are not good for trials bikes long distance as the radiator is too small to dissipate the heat generated. They are not really a road bike! Quote Link to comment Share on other sites More sharing options...
lineaway Posted March 31, 2014 Report Share Posted March 31, 2014 Hopefully the smoke was just buildup in the exhaust. With all the slow riding, oil gets built up. Quote Link to comment Share on other sites More sharing options...
cactusjack Posted March 31, 2014 Report Share Posted March 31, 2014 It may have blown a crank seal too, I would be checking the gear oil level immediately. If all is ok in the gearbox then I would run with what has already been said. Quote Link to comment Share on other sites More sharing options...
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