What have I done }:( Bike stays reving high ?

Hi everybody,

Well I tried fixing my black plug problem , and created a new one.
My plugs were blacking fast, Thought I was running too rich . So i removed the tank , screwed in all the Mixture screws, and unscrewed them 3 full turns out.
Great ! Checked my plugs and they looked better. NOw the bike was reving at 1200 rpm when warm and choke off . Then it started to rev high them die. so I decided to mess with the Idle screw , I screwed it in all the way , when I started it It runs full tilt ,so I kill it right away . So I've now arrived where the engine Runs and stays at 3000rpm with out the choke . And when I just touch the Throttle is stays open for a few seconds and slowly returns to 3000 rpm . What do I do? I feel like lighting it on fire. My manual is Garbage , Its good for identifying Parts and that is all . Id love to fix this problem today . Just to say it was running and Idleing fine before I touched it , was sooting up the plugs and thats All . Thanks for any help . frustrated .
:x

 

have you tried turning the mix screws a little richer, to see if you can find where it ran better?

 

perhaps let the idle screw down as well, to find a slower idle

 

I 've unscrewed the throttle stop screw practically all the way , there is only a difference in RPM when I reach a point going back in and it starts reving higher ...

 

Sounds like the the idle mechanism is hung up on something so that even though you unscrew the idle, it doesn't actually adjust below the point where the mechanism is hanging up but it will move freely the other direction. I'd check there ...

Michael

 

Check your throttle cable routing & mount on the carb, be sure it isn't preventing the idle from returning to the right spot

 

you didn't mess with the sync screws, did you?

 

I think Stereo has the answer.
Sounds like he adjusted the Sync screws NOT the Pilot Mixture Screws.

If you did that the additional air would make the engine Idle way up and NOT come back down with the throttles closed ... because the screws are too tight PREVENTING the Butterflys from actually closing.

Diid you adjust the screws on the LINKAGE or inside the Body on the upper front of the Carb?

 

in between each carb is a screw with a spring under it .... Im guessing that is the wrong screw to screw with ..? is it screwed now? It would exp[lain the high reving and disfunctional choke ..CRAP . I guess I will have to remove the carb and bench sync it ? if thats not the mixture screws where are they ?

 

Yep, you are going to have to re-sync your carbs. On the top engine side there is a linkage that runs the "choke" for the bike right behind that on each carb is a small hole about 1/4" or so in size. They may have a plug on the top. They are inside the carb body. These are your mixture screws. Follow RickCoMatics fine tuning regiment and you should get it back. Gamuru has a good how to on syncing your carbs also. Good luck!

 

Sometimes the Pilot Mixture Screws are hidden beneath Anti-Tamper Plugs pressed into the top of the Carb Body.

Look on the front of the Carb.
The top.
Just to the right of the Pillars that the Choke Activating Rod goes through.
There should be a small round opening with either the slot of the Mixturue Screw visible ... or, ...
A Blind Plug flush with the top of the Carb Body.
(Some have a tiny dimple in their center)

If you have the Plugs in ... they have to be removed.

Exercise caution.
Drill a small hole in the center of the Plug.
+++
Be careful not to penetrate beyond the depth of the thin Plug.
The top of the Soft Brass Mixture Screw is almost touching the back-side of the Plug.

Grind the sharp point off a Drywall Screw.
Screw the Dywall Screw into the hole drilled in the Plug.
Use Vice Grips to grab onto the Drywall Screw.
Impact the Vice Grips from below until the Plug is withdrawn.

Throw the Plug out.
Add some light oil to the top of the screw head.

Fabricate a screwdriver that fits the SLOT of the Pilot Screw PERFECTLY!
You don't want the wings on the top of the screw moving AT ALL without the whole body of the Mixture Screw moving with them.

Causing damage to the Mixture Screws is a detriment to Fine tuning.
If the Screws are Stuck ... STOP.
Don't damage the Screw ... we'll discuss how to loosen them if need be,

 

Thanks for your help guys, Ive synced the carbs , and it seems to sound better than ever ! Getting pretty good at removing the carbs . I assume the idle mixture screws are the small flat head screws on the top body are what I should have been aiming for. Ill check the plugs again and adjust accordingly . Thanks again guys .