Carter WDO pump needle valve - which way?

Posted by Mal120NZ On 2010/3/26 18:16:27

Hi Guys, I have a Carter WDO, 512S carb on my 1936 120B Conv coupe. Just giving it a clean out after 2300 mile drive around NZ South Island with 20 other Packards. A problem!! The needle valve (looks like a small version of the fuel input needle valve)fell out when I turned the carb upside down after removing the airhorn, and now I don't know which way it goes in. The screw above it seems to have a taper in the bottom so I wonder if the valve goes with needle point up toward bottom of screw. Any help welcomed ASAP as I want to put it back together. As a side note, I have had the car for 9 years and just finished a body off restoration just before the trip. It was mainly body, paint, upholstery, wiring and chrome as I have kept her mechanically excellent over recent years.