May have found the problem I don't have a vacuum gauge but I took a small bottle of gas and hooked it up to the out put side of the Air Cut off Valve and apply a small amount of pressure I get gas coming out around the small o ring seal. To test this can i bypass the air cut off valve by running a vacuum line direct from Carb vacuum to fuel cut off valve.
Thanks for the input guys a little more history on this scooter. I bought it a few weeks ago and it ran flawless then one day it put me to pushing it home would start and idle but once you gave it gas it died. Ordered a new carb, petcock. filter installed them and it ran flawless again for about a month then one day after about 2 miles it acted like it wasn't getting fuel got it home. It started and ran like a champ for about a week then started all over again. Since Carb was replaced and it ran great for awhile don't think it is carb will check around the carb today with water and inspect everything to see what gives. Keep the input coming and many thanks
85 Elite 250 with 7500 miles new carb when starting engine starts right up and idles great but when you give it gas it dies, New carb new petcock. It did this with old carb so I got a new one and new petcock what do I check not