Question about Yamaha YZ 250 Motorcycles
I live at 1000 ft and ride between sea level and 3500 ft. The bike has an FMF Burly pipe and a turbine core 2 silencer. For some reason it has a nasty hole in the bottom end and in the beginning of third just wondering if there is someone who has had this problem before or if they know of a fix
Possibly your powervalve is not operating properly or you have a rich condition happening just off idle caused by your slide needle position or a malfunctioning float valve..
Usually, the only thing wrong with a powervalve is that it's stuck and needs a disassembly and thorough cleaning.
To lean the slide needle, remove the needle and move the circlip up one notch.
If your float valve is malfunctioning, you'll probably notice some trickle of gas out of the overflow tubes when sitting. This will often clear up from the vibration of a running engine, but may have already loaded up the crank chamber. Remove float and valve and clean the needle and seat with a q-tip and carb cleaner. Look for scarification in the seat or a pronounced
ring around the rubber part of the needle. Replace defective parts.
Posted on Jun 12, 2010
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Posted on Jan 02, 2017
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