2000 450es Speed Problem

[questian]

I have a 2000 450es honda and it is loosing power in the high gears. If in 5th gear at full throttle and running good it will all of the sudden loose power and about 20miles on the speedo. After this happens I have to slow down and down shift all the way to 1st and it will start to work right again. The weird thing is if in the lower gears at lower speeds I can run all day with no issues. Any help would be greatly appreciated.

[motorhead]

starving for fuel??? float level adjustment???

[rpyfz450]

Any backfiring or other observations to mention?

[questian]

<div class='quotetop'>QUOTE (rpyfz450 @ Jun 5 2007, 07:57 AM) <{POST_SNAPBACK}></div>

Any backfiring or other observations to mention?[/b]

Does backfire an bit. Cleaned up carb bu no help.

[rpyfz450]

What color is the sparkplug tip when you check it?

[questian]

Found the problem, a baffle broke off in the muffler and was blocking the exhaust off . Pulled piece out and all is fine.
Thanks for your help.