Gilera coguar 125cc revving extremely high then dying

[Bongo]

Hi everyone, I'm currently restoring my old gilera after it being stored in the garage for about 4 years.

 

I took the carb out and cleaned it but after putting it back in it wont start unless I put my hand over the air intake, and with doing so the bike just revs extremely high for a few seconds then dies.

 

I have tried adjusting the idle screw and fuel screw but I havent had any luck but maybe I'm not doing it right.

 

I should also say that the air box is removed.

 

Any help/advice would be greatly appreciated.

[Old-codger]

Have you put the slide in the wrong way round? usually there is a peg in the carb that stops you doing this but I know of old carbs that dont have this so if you put it in 180 degrees out the bike will rev its head off.

[Bongo]

Yea It's definitely in the correct way, although the slide doesn't seem to be seating the full way down. Is there any way to adjust the slide height?

[Old-codger]

Check that the cable is seated properly in the slide, its easier if you remove the carb so you can see the slide moving and look for obstructions.

[Bongo]

I'll try that when I'm home. Would that explain my problem if it was the case?