Question about Motorcycles
The air fuel mixture sensor is probably starting to fail. You need to have a simple diagnosis done at the shop and then have it replaced - they are usually not much a reputable mechanical shops. When the motor warms up your air/fuel mixture changes hence the rough idle etc. Hope this helps.
Posted on Dec 31, 2008
Ihave the same experience try to remove the idle jet located next to the starting jet. But be careful in removing it as it will break easily ( you will need a flat screwdiver to do it ) clean it with a wire that closest size of the jet. change your fuel filter ang drain all the fuel inside before putting it back. make sure to put some air pressure on each holes on the carb so it flush all unwanted particles inside and pls dont use silicone in sealing the rubbers inside.
Posted on Jan 21, 2009
I would suggest that you have the valve clearances checked.
Also, check that the carb is clean. Pay particular attention to the PILOT JET as this opperates the idle circuit.
Posted on Mar 05, 2009
SOURCE: Yamaha TTR 250, Idling Problem
check the inlet manifold rubber has not seperated from the aluminium part of the manifold ,this is very common on the ttr 250 and will cause the exact problem you have,if it is seperated either replace it or repair it with some good quality rtv sealant avoid sillicone sealant as it is not petrol resistant and will turn to jelly.adam
Posted on Apr 28, 2009
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