Sam The Man Posted July 16, 2008 Share Posted July 16, 2008 Hi guys,I just got my dna on the road (woohooo) and have had a problem with it. Background of the bike: It hasnt been ridden on the road since Sept 2007. The same petrol has been in there until i tried to run it down as far as i could and topped it up with fresh fuel. It has done 3000 milesProblem:When i build up revs and speed, (normally 40mph and 8000 revs) the engine sometimes (not all the time) dies and the revs will suddenly drop to about 5000 and my bike will go to 20mph even at full throttle. So i pull to the side of the road and as soon as i stop the engine cuts out. I got to start my DNA up again and it wont start. I have to give it about 3 minutes then start it and it seems to be fine. I thought it could be fuel but the old fuel should have been used by now. Anyone got an idea of whats wrong??Thanks in advanceSam 8) Quote Link to comment Share on other sites More sharing options...
Stu Posted July 16, 2008 Share Posted July 16, 2008 could be a blocked fuel line stopping the fuel flowing freely to the carb or gummed up carb Quote Link to comment Share on other sites More sharing options...
Sam The Man Posted July 16, 2008 Author Share Posted July 16, 2008 ok Stu thanks for that. I might take it in for a service Someone said it could be the rollers or something Quote Link to comment Share on other sites More sharing options...
Sam The Man Posted July 16, 2008 Author Share Posted July 16, 2008 It has done it again!!!! I was doing 40, stopped at traffic lights,then got up to 40 then suddenly the engine started slowing and cut out. Wouldn't start so had to walk it round the corner to my house. It has got about a 5th of a tank left, not much so could be the old fuel it doesnt like or somethings clogged up Quote Link to comment Share on other sites More sharing options...
Bill_on_a_bike Posted July 17, 2008 Share Posted July 17, 2008 Have you taken the carb apart and given it a good clean out? Quote Link to comment Share on other sites More sharing options...
Sam The Man Posted July 18, 2008 Author Share Posted July 18, 2008 Have you taken the carb apart and given it a good clean out? No I havnt. I drained all the fuel, added new fuel and petrol additives. I might get a new spark plug as that could be another reason and also clean out the carb Quote Link to comment Share on other sites More sharing options...
Sam The Man Posted August 18, 2008 Author Share Posted August 18, 2008 Right...he gave it a good clean out (the carb) covered up some of the airholes on the airbox as too much air was getting in the engine...it works fine now (as long as i dont go over 40) i think the fuel pump cant work quickly when i go over 40 Quote Link to comment Share on other sites More sharing options...
Guest Posted August 18, 2008 Share Posted August 18, 2008 I had basically the same problem, everytime I stopped at a roundabout or traffic lights I was praying for it not to die when I moved off.Gave the carb/air filter a good clean and replaced the sparkplug, seems fine now.Even though the plug is sparking it could still be dodgy, bikes can be pretty sensitive, and may aswell change it and know the spark plug is good for only like £3 Quote Link to comment Share on other sites More sharing options...
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