If it is you fuel enrichment valve you can do as I did. And make it a manual enrichment valve. This is from another member who showed me.
Look at post #37
http://www.buggymasters.com/forum/showthread.php?t=4518
Only thing I did different is I used epoxy to adhere the top nut on and used a ( this stuff like JB platic weld to close the hole wires use to come from)
Unscrew bolt allows fuel through thus enriching it make it easier to start on cold days.
And closing bolt'; closes valve and is how the buggy normally should run.