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More carb troubles, engine won't return to idle revs

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billdn:
The saga continues. I've refitted carbs after setting sliders using BrianJ's method, and others and seemed to achieve what was required.  Bike starts fine and when warm ease off choke and all ok. But when revved up to say 3000rpm the throttles close properly on handlebars, but revs do not drop back to tickover 1200rpm. This can be achieved by using main idle screw, but when revved again the same happens meaning using idle screw again - could make for interesting riding! When revved higher say 4000rpm still won't drop back past 2000 without using idle screw.
I have fitted main air box to back of carbs but not yet connected up to filter box (suspected I'd be taking them off again!) and air filter not fitted but this shouldn't make any difference at this stage I believe. Carbs have been stripped/cleaned and replaced brass float rods and carb float height set.
Any ideas? Anyone? Please !

Nurse Julie:
Is the throttle cable lock nut thingy done up properly Bill? (I'm trying to remember the proper name for it...... But 🤔🤔🤔) It's the bit where the cable sits in a bracket and you lock the nut to stop the cable moving.

billdn:
The one on the open/ close butterfly thing or the handlebar ?

Nurse Julie:

--- Quote from: billdn on October 09, 2022, 12:40:38 PM ---The one on the open/ close butterfly thing or the handlebar ?

--- End quote ---
On the butterfly Bill.

billdn:
I'll double check but everything seems to open/  close OK but you never know bit fiddly at that bit .

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