I have a 2000 Yamaha V-star 650. It has a carburator. I've noticed that when I'm pushing the bike harder (accelerating fast) then right when the rpms get high the bike loses power for a second, then I usually shift and it's okay again. It's like it doesn't like the higher rpms. It feels like it's not getting enough gas, or air, but I'm no expert so I'm not sure. The first thing i was going to check is the air filter. After that, I'm not sure where to start. I'm afraid to mess with the carburator, everyone tells me it's for experts only.
2007-03-12 17:37:07 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
2 words.....rev limiter. once the tach gets to a set range, it wont allow the rpms to go any further, and it will force the engine to back it down. its to keep the engine from getting over-rev'ed....and getting damaged. those other 2 posters obviously doesnt ride or they would have givin the right answer. it aint the valves for sure. all bikes have a rev limiter.
2007-03-12 23:05:57 · answer #1 · answered by Anonymous · 4⤊ 0⤋
Ummm, an engine is only capable of creating torque within a certain range of speed (rpm's) thats why you HAVE gears so when you feel like you are not effectively going faster in a given gear, that is when you are SUPPOSED to shift to the next highest gear. Now, if you are in the highest gear and still not able to attain the average high speed in the manufacturers specifications for your bike then you have a problem. Otherwise, shifting would be the right thing to do!
2007-03-12 17:51:13 · answer #2 · answered by musicmaster200 1 · 1⤊ 2⤋
ok im 13 and im not an expert but u should check the rev limiter ,clean air filter,check the cylinder for major scratches,and check the piston scratches,it could be the rings if there worn down. oh yeah just find a diagram for the carb take it apart and see if the jets are clogged up.
2007-03-13 04:30:58 · answer #3 · answered by austino 1 · 0⤊ 1⤋
It is possible that you may be loosing power due to the valves.At high RPM's they begin to 'float' meaning that the springs that control their closing and seating doesn't allow them to seat all the way and so the engine looses compression.Thus when you shift into the higher gear, the engine slows down and resumes back to it's normal operating range.You may try to replace the valve springs with heavier duty ones.Besides, your engine can only push out so much horsepower at a given maximum RPM
2007-03-12 17:49:18 · answer #4 · answered by tturbod2001 4 · 1⤊ 2⤋
shut up dummy throw it on a dyno.what a dumb ***..
2016-06-24 22:48:25 · answer #5 · answered by ? 1 · 0⤊ 0⤋
Rev Limiter.
2007-03-13 03:01:47 · answer #6 · answered by tmlamora1 4 · 1⤊ 0⤋
Throw it on a dyno. you can find a DynoJet dyno in your area at this link -
http://www.powercommander.com/centerbystate.shtml
It sounds to me like you are lean but that is just a guess over the internet. The dyno should be able to tell you if it needs adjustment.
2007-03-13 01:20:49 · answer #7 · answered by Anonymous · 0⤊ 1⤋