idle problems?

[Cammo]

Being out of balance won't cause these sorts of symptoms.

My money would be on the carbs having a slight air leak.

It might not be the smartest idea in the world, but I've just taken them for a good hot run when this has happened and the carbs will seat themselves properly....

Oh, and lose the throttle return cable (lower cable), no need for it and it just gets in the way I reckon. The 4 (5?) springs on the carbs will get that throttle to return well enough.

[porndoguk]

i took the bike out on a very fast and hot run yesterday used a full tank over the journey there and back sitting above 100 most the way.

so the throttle off cable can be ripped out,

i recall the throttle wheel (on the carb) with cabkes removed sitting in the same position as with the cables on? is there anything i need to adjust for that to return to a fully closed position?

will have a play saturday when i strip her down again!

[CMSMJ1]

i recall the throttle wheel (on the carb) with cabkes removed sitting in the same position as with the cables on? is there anything i need to adjust for that to return to a fully closed position?

This will be because the idle screw is set too far in. Some carbs have an allen bolt as the doofus previous owner has snapped the actual cable.

whatever, this throttle wheel will be kept open by a screw - undo it some.....

[porndoguk]

i recall the throttle wheel (on the carb) with cabkes removed sitting in the same position as with the cables on? is there anything i need to adjust for that to return to a fully closed position?

This will be because the idle screw is set too far in. Some carbs have an allen bolt as the doofus previous owner has snapped the actual cable.

whatever, this throttle wheel will be kept open by a screw - undo it some.....

that was with the idle screw completely undone!

[Neosophist]

i recall the throttle wheel (on the carb) with cabkes removed sitting in the same position as with the cables on? is there anything i need to adjust for that to return to a fully closed position?

This will be because the idle screw is set too far in. Some carbs have an allen bolt as the doofus previous owner has snapped the actual cable.

whatever, this throttle wheel will be kept open by a screw - undo it some.....

that was with the idle screw completely undone!

The carbs should close fully, if not look at the butterflies and see if there is an obstruction. Something is keeping your carbs open... the wheel that the cables attach to should be fully seated home against the peg if the idle screw is out...

[porndoguk]

right, i decided to strip her clothes of after removing the rear wheel for a new shoe!

any way removed the throttle cables and unwound the idle screw all the way out and fired her up,

and it sat around 1000rpm, gave the wheel a blip, and let go, the revs dropped down to 3k and stayed there? after looking in depth with a torch and fingers, i think the springs arent pulling the wheel right the way down, it only drops revs when i put a little pressure on it with my finger, as for air leaks i sprayed brake and clutch cleaner and nothing extra special happened so i guess its down to the springs on the carb wheel,

any ideas on what i can do because after looking at my spare carbs the spring cannot be removed etc?

thanks in advance Rick

[Cammo]

after looking in depth with a torch and fingers, i think the springs arent pulling the wheel right the way down, it only drops revs when i put a little pressure on it with my finger

The throttle pulley doesn't go to fully closed (all the way), even when you've removed the idle adjustor completely. I think having something wrong with the pulley and springs would be very unlikely.

Are you sure the stuff you sprayed on the carb rubbers is highly flammable??

[Neosophist]

I'm with cammo on this one, the carb springs being wrong is very unlikely.

Rev hanging is a good airleak sign.

Where did you spray the cleaner? around the rubbers where the carbs fit on?.

When you put pressure on it and the revs drop are you seating the carbs better or just turning the butterflies.

Something isn't right anyway :) We'll get there

[porndoguk]

right problem still remains, today i

removed the carbs (again)

screwed pilot screws in then back out to 2.25 or 2/14 turns

checked all the butterflies were opening and closing at the same time,

unscrewed the butterfly screws anti clockwise a 1/4 turn to take a little pressure of when all closed,

i oiled the seals so when i pushed carbs back they would slide in better,

i started her up and guess what idle at 3.5k rpm AGAIN

i used the wifes jostick and used the smoke from that to see if any leaks at idle (3.5k) and at 8k rpm, and no leaks,

the throttle on is lose so no tension there, the idle screw is out fully out but to the point to stop the bike stalling when i close the throttle with the hand

the throttle off cable is being used to pull the wheel the last bit closed by hand, when i release the throttle the revs go back up

answers on a postacard?

cheers in advance Rick

[Cammo]

unscrewed the butterfly screws anti clockwise a 1/4 turn to take a little pressure of when all closed,

Do you mean the carb synch screws/springs?? These might be so out of adjustment that it's causing your problems.

Have you tinkered with these screws ever before??