I'm doubtful that I follow you, but what you could do is remove any feeders to the spur and see if the new turnout will power the spur...that is, if it is a power routing turnout. Otherwise, you could also leave a gap just past the frog on the divering route, and then feed that spur.
I do suspect a counter-polarity problem, and it would seem, on the face of it, that your turnout is indeed a power routing one. When it is lined for the diverging route to the spur, you get a conflict between the polarity to the spur and what the turnout is wanting to provide it.
You are sure to get other questions or comments, so please be paitent...someone else may have it for you very quickly.
Welcome to the forum.
Hi - having a problem adding an Atlas Super Track, code 83, turnout (all live with insulated frog) to my layout. I have 2 lines which converge on the new turnout to form a single track. There are no reverse loops involved. One of the 2 tracks I want to connect to the new turnout is a spur and runs a few feet and ends (top line below). The 2nd line, crude drawing below, has a turnout on the opposite end heading in the opposite direction of the new turnout. The newly added turnout that shorts my SuperChief is the one on the right. Do I have a polarity issue (because of the turnout on the left) and, if so, how do I correct this issue(such as gapping).
I--------------------------------------------- Spur which connects to turnout #2 below on the right
>--------------------------------------------->-------------I
Turnout #1 #2
Thanks