I have owned 11 Stromberg carburetors in my life. 7 in the past, and 4 currently. I never had a problem removing the needles from the earlier 7 carburetors as they were different from the ones fitted to the newer carburetors on my '71 and '74 Lotuses. I am stumped as to how to remove the needles from the 4 carburetors on the two Lotuses as they are spring loaded as opposed to solidly mounted. When I remove the set screw, the needle can be pulled down a short distance, but springs back up into the air valve once released.
As I am in the USA, both of these cars are Federal versions, equipped with emission controls required for the North American market. I believe the needles are non adjustable.
I am aware that there is a tool for adjustable needles (B 20379Z), but I think that mine are not adjustable. Is this tool also used to remove non adjustable needles?
Obviously I cannot even tell what needles are used, as I cannot remove them to see what their numbers are. Does anyone know what the trick is to removing the needles on these carburetors?
Thank you.