throttle stuck

[JimEd]

While riding my 2000 Valkyrie the throttle suddenly stuck wide open.
I was going about 30  MPH, I noticed a car coming up fast from behind so I started to speed up.
When I shifted the RPM meter went up to 7000.
It was quite a ride until I realized it was stuck and hit the kill switch.
I checked the cables and they seem to be working correctly.
Anyone have any ideal what to check next?
I am planing on taking it to a dealer next week if I cannot come up with a fix.

[R J]

check for frayed ends on all the cables.........

If it is free now, it sounds like a frayed end somewhere,

[JimEd]

It is not free now, soon as when I hit the started it goes to 7000 rpm.
Cables look fine.

[fudgie]

Maybe a dumb question, but do you have a throttle lock on the bike? I know I have shifted before with it still engaged. 

[JimEd]

No throttle lock,,,

[Ricky-D]

SO, are you saying you can turn the throttle but there in no reaction from the carburetors.

It's unclear to me what exactly is happening since there is the idle cable that should allow you to turn the gas off.

***

[JimEd]

Yes, I can turn the throttle and the cables are working.
I checked the cables at the hand grip and removed the linkage covers and checked there.
When I turn the throttle I can see the proper response at the carb linkage.
Still it is stuck wide open like the cables are not working.

[Thunderbolt]

I would put it up on a jack and get a stool and a bottle of my favorite liquid refreshment and study it for a while.  Take the choke covers off so you can see really well.  Have someone else turn the right handgrip while you get real close and make sure each carb comes to rest on the throttle stop.  I know that must have been scary, but you will feel much better when you find the problem yourself.

[fudgie]

Do you have a audio vox cc? Maybe something has caught the beaded chain down below causing it to hold open. Can you move the choke ok?

[JimEd]

No cruise control or throttle lock.
Choke seems to be working the cable needs a slight adjustment on the right side as that side is not opening all the way. I never use the choke so I didn't adjust it.

[sugerbear]

the only way it could run wide open is if the butterfly on each carb is stuck open at the same time. it has to be the linkage. do you see the linkage turning at EACH carb, or is the cable turning but not the shaft
like was said before get a seat, beverage, and flashlight and start at the throttle and work backwards.

[JimEd]

Sugarbear sounds like a plan...will start on Monday,,,one step at a time..

[Momz]

Do you have LEDs mounted on the carb linkage covers?
I've experienced that first hand,...when the vendor wired up some LEDs at Bike Week 2006.

Made that dumbass fix it before he could start another customers bike,....he hurrying as he had taken had taken deposits on more bikes than he could handle.

[JimEd]

No LEDs ..

[Madmike]

Any chance that something is jammed between the grip and switch housing??

If the grip itself freely rotates forward and the engine doesn't return to idle then one of the cables (the "push" one??) must be broken or unhooked.  If the grip doesn't freely rotate forward then check for a kinked or frayed cable.

If you split the right side housing and disconnect the cables from drum connected to the grip then you should be able to pull on one cable and it should open the throttles then pull on the other and it should close the throttles.  In reality the carb linkage should "want" to be in the idle position and always return there.  If you pull on the cable to open the carbs and release the cabl ethe carbes should return to the idle position on their own, if they don't then one of teh cables is binding somewhere.

The cables hook to the carb linkage on the RHS of the bike between the first and second carb, there is a drum there with the two cables wrapped in opposite directions - one to open the throttles the other to close.  If you unhook the cables right at the carbs you should be able to open the linkage with your finger and when you release it the linkage should return on it's own back to the idle position.


I have a "o-ring" pick that is about 8" or 10" long and is bent at a right angle on the end, it is very handy for using to get the cables into position and wrapped around the drums in the correct positions.  You could make a similar tool out of a piece of stiff wire like a coat hanger.

If you need to pull new cables in you can tie a piece of string on to the end and pull it through with the old cables when you remove them and then tie it back on the new cables to help and pull them back in to place.

The enricher (misnamed choke) has no physical connection to the throttles or throttle cables.

If it turns out that you need cables you can order them from a dealer or direct from Motion Pro in either black or stainless steel - same place for the "dee" socket for carbs.

http://www.motionpro.com/motorcycle/tools/category/cables/

[Ricky-D]

Well, if the throttle cables work and you can see them work the linkage I would suggest that one carburetor is the culprit. You'll have to look closely at each carburetor to determine which one is the problem carburetor. It'll involve removing some extraneous covers and using a good light source.  The best way is to turn the throttle yourself because eye/hand coordination will aid you in determining when something should be moving, or not.

***

[JimEd]

MadMike,,,I think you have solved this for me.
I looked at the drum with cables running in opposite direction and can see  that one of the cables is bound up.
Will get more into it on Tues. I am getting a service manual.

Thank you

[Madmike]

glad you found your problem, there is a PDF file available for download, the file contains the manual.

Check here..

http://www.valkyrienorway.com/index.html

left side of page under technical heading, bottom of that section..