when i am in 5th gear my bike has no pick up in speed when i give it full gas. and it jurks. it feels like i think maybe my clucths are bad but i dont know or maybe i need a jet kit??

Can anyone help me figuer this problem out. thanks so much guys.

 

So, you're saying that in 4th gear if you give it WOT (wide open throttle) that it accelerates just fine ?

 

are you going fast enough in 5th gear so the bike actually has a chance to accelerate when you apply load. Going 30 mph in 5th and pinning the throttle won't really do much.

Try a more appropriate speed, close to 100 mph before you pin it.

 

once i get in to 4th gear i can even hit 100mph.even at WOT. so thats why i think it might be the clucths

 

If you're having problems hitting 100 mph in 4th I doubt its your clutch. I think the gears are skewing your perception here. Sounds like you have a flatspot. Basically when you hit a certain RPM range, speed or throttle point your bike loses power. It's because it's lacking something at that point, usually either air or fuel.

If you know any long open stretches of straight road with very little traffic, you can try testing it. Try hitting 7k rpm in each gear (except 1st gear), rolling on smoothly. I don't recommend experimenting in 1st gear because 1st tends to be very twitchy. A sudden power loss followed by a surge can end up dumping you off the back end.

Then tell us what you find

 

Been there. Twelve oclocked it doing this on a ****ing moped of all things!


Your wording is where a lot of the issues here are coming from. You're not giving us much info, and repeating the same things over and over again as if we don't understand you. We understand what you wrote, it just wasn't enough to get your point accross properly bud.


Say you're in 4th gear, at 8000 rpm, and THEN go into 5th, is THAT when you have absolutely no power?

 

its like once i get in to 4th gear i have nothing it seems doggy as hell. and 5th is the same. and its in 4th and 5th gear it has like a jerking motion like the clutchs are slipping a little.

 

i just finished make my 12 o'clock bar for my F2. ill have to post pictures. makes the bike look alot different.

 

jerking motion doesn't sound like a slipping clutch. A slipping clutch will just rev up and the bike will not go anywhere. Sounds more like a jetting issue and or dead spot like others have mentioned

 

You mean it pulls hard like this one does at 0:52, but just not in 4th and 5th?
http://www.youtube.com/watch?v=mjdqh...eature=related
It could be that it's actually being slow in the other gears, it's just not as noticeable because the engine needs to work less to make you accelerate at lower road speeds.