Mixture Screw

Hi I have just had a look as i have been told my car in running a bit rich, but there is no screw there, there is a threaeded hole but nothing in it.

I guess i need one so where can i get one from cheers

if its a k-jet injection model, then it is there but you just cant reach it. the mixture screw is a 3mm allen, and its very deep inside the metering head

ok cheers will have a try tomorrow, seen a picture and it looked like it should be there, cheers for the help

you may have seen the type with like a long tube sticking up from the hole, some metering heads have this and some dont

did you sort this after?