rubber Jonny
New member
Hi all,
Got a problem with my 2013 EC250, bikes done 90 hours still all original piston etc. Was running perfectly well and all of a sudden its lost a load of top end power. I know you cant but if you could "turn the power valve off" its like that. Its not gone away over time just all of a sudden lost power as if the main jet was blocked or powervale not working properly.
Done all the usual stuff, carb cleaned, air filter cleaned, new plug, still the same.
I had some new exhaust packing I had not got around to fitting so I changed the packing make sure its not blocked, went for a ride, still the same.
Cleaned the carb again, was perfect as expected the bike has not been off road since the last clean. Took the covers off each side of the power valve to see what it looked like in there, bit oily but not gummed up, power valve moves freely. while i was doing this I looked up hole at the piston, its fine. went for a ride, still the same.
Now this is where I am, cleaned the carb three times. new air filter. new exhaust packing. inspected powervalve operation. took front pipe off looked up hole, piston looks ok. Im struggling with this now as I cant think what else to check without taking the top end off the engine looking at the piston and power valve assembly properly, dont want to do that unless I have to.
Any suggestions please?
Got a problem with my 2013 EC250, bikes done 90 hours still all original piston etc. Was running perfectly well and all of a sudden its lost a load of top end power. I know you cant but if you could "turn the power valve off" its like that. Its not gone away over time just all of a sudden lost power as if the main jet was blocked or powervale not working properly.
Done all the usual stuff, carb cleaned, air filter cleaned, new plug, still the same.
I had some new exhaust packing I had not got around to fitting so I changed the packing make sure its not blocked, went for a ride, still the same.
Cleaned the carb again, was perfect as expected the bike has not been off road since the last clean. Took the covers off each side of the power valve to see what it looked like in there, bit oily but not gummed up, power valve moves freely. while i was doing this I looked up hole at the piston, its fine. went for a ride, still the same.
Now this is where I am, cleaned the carb three times. new air filter. new exhaust packing. inspected powervalve operation. took front pipe off looked up hole, piston looks ok. Im struggling with this now as I cant think what else to check without taking the top end off the engine looking at the piston and power valve assembly properly, dont want to do that unless I have to.
Any suggestions please?