1992 Exciter II Revving Issues

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Projectexct2

New member
Joined
Sep 19, 2009
Messages
10
Age
42
Location
Wonderlake, IL
Hey Guys great site first off. I am a new member here i have been here browsing and searching for the info to my question. I didnt find it so i decided to join and put up a post to see if anyone could help me solve this issue. 3 years ago i bought a 92 Exciter i spent 18 months rebuilding it to get it to where i wanted it to be. I was out riding last season and we had been out all day and stopped for lunch. After lunch we all went back outside to get the sleds fired up and they all started and once my sled had warmed up we had decided to take off. When i went to take off the sled would not rev over 2500 rpm. I was like what the heck. So i took the belt off to see if it was something in the chaincase and or track. Well that didnt do anything different. I even bypassed my Tors and that didnt change anything. So i called my buddy to go grab my trailer and come pick me and my sled up so i could go home. I have taken the carbs apart and rebuilt them with all oem parts and the factory settings for my altitude. It still hasnt made any difference so i am completely stumped as to what my issue is. I am trying to get my sled done before the snowflies so i wont be stuck at home listening to all the neighbors out on their sleds. Any help is greatly appreciated Thanks to all in Advance.
 
Is it idling smooth? Have you checked the compression? Could have broke a ring. Might check to make sure you have good spark as well.
 
Yes it is Idling smooth the compression is great and i have strong spark that is why i am so confused. I am beginning to get irritated cause i want this sled done so i can get it in the trailer before the snow flies. I have heard there is a guy here that is a Yamaha sled guru and i am hoping he sees this thread. Anyway if anyone has any other ideas of thoughts send me a pm or post it here maybe someone can come up with something i havent thought of.

:dunno:

:2strokes:
 
The only other thing that I can think of would be to check the cluches and make sure they are freed up and nothing broken. There is definately some super smart yamaha guys on here and I'm sure someone has some other ideas for you. Good luck!
 
Throttle positioning sensor at the trottle flipper.Cable might not be sitting in the holder properly and will not give the freeplay it needs ?
 
Yamahaguy_700Trips said:
The only other thing that I can think of would be to check the cluches and make sure they are freed up and nothing broken. There is definately some super smart yamaha guys on here and I'm sure someone has some other ideas for you. Good luck!
Click to expand...

Didn't you say you took the belt off and ran the machine or just spun the jackshaft over to make sure the chaincase or track wasn't bound up?
If it rev's up with the belt off, that eliminates the primary clutch. And if the secondary was the trouble (belt too far down) it wouldn't take off but would eventually come up to speed / RPM.

Are you sure you by-passed thre TORS correctly?

What does it do when it reaches 2500 RPM? Does it sound like it's missing? Or does it sound like it's too rich and won't clean out, like the choke is on?
Maybe one of the main jets loosened and fell out?
 
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Yes i did run it with the belt off. From what i have read all you have to do to bypass the tors is unplug them from the carbs and plug them into themselves before the carbs. When it hits 2500 RPM it cuts out and sounds like its missing. i will take the carbs off tomorow and go through them again.
 
2500 rpm and is missing, not bogging is TORS. The idle setting in relation to the throttle cable tension can set it off, so I am guessing its not disconnected correctly.
 
Back the throttle cable off a little,With the sled off you should see the flipper rotate backwords at the hinge pin as you apply gas.The only time you bypass is if the carbs are iced up or the cable is to tight.
 
OK guys i have completely disconnected the tors system for testing purposes. I am still having the same issue. I can not rev over 2500 still i am completely lost i dont want to take it to the dealer because they will charge me an arm and a leg even if they will work on it. i have heard that they will only work on the newer sleds 2005 and newer.
 
I checked the throttle. I swapped out the cdi and the stator i still have the same issue. the cdi are off of my old parts sled that also ran. i have no idea i am getting very frustrated here. can anyone help me out ? Also do any fellow members live close to northern il that may be able to help me ?
 
just a shot in the dark but did you check that both throttle slides are opening when you push the throttle? i've seen throttle cables let go where they split from one cable into two and cause one slide to remain at idle while the other is opening the way it should.
 
When you ran it at 2500 while missing, have you hit the kill switch and checked the plugs? That might expose somoething if there is a difference between the 2 sides. It may help dignose whether the problem is:

Electronic (Sounds like you have beat this into the ground)
Fuel
Air
Mechanical

-Steve
 
Also has anyone ever heard of spark plugs that fail to work at high RPM'S.. seems I remember someone finally figureing out the plugs would work at idle but under load would start to not work.....

I can imaging this would be a tough diagnosis if no one had heard of it. It is worth a shot.

-Steve
 
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