Used Classic 1983 chrysler new yorker for sale in Jefferson, IA

This is a classic luxury auto from years gone by. Very low original miles! See photos. My mother owned it and it sat in her garage the last 15 years of her life. Body and interior in very good condition overall. I wiped it down but it needs cleaned better inside and out. I hauled it to my house, jumped it and sprayed starter fluid into the carburetor. It started right up. Gas tank was empty so I added a few gallons, I replaced fuel filter and sucked gas through to filter. Still would not start so I replaced fuel pump also. I sucked fuel up through pump to carb and it ran for about 45 seconds and sounded fine. Each time I jump it and spray starting fluid into carb for a second, it will start and run for about 20 seconds and then it dies. I am tired of working on it. But if you are interested, I will jump it and start it for you so you can hear the motor run and know that it sounds fine. Might be easy fix for someone who knows cars. I am guessing a vacuum leak, carb needs adjusted or something easy. Call or text Paul if interested at show contact info
. Asking $950 or make a reasonable obo. We could not find title but Treasurers office said I can get a replacement for $25 so I will go get one and then it will have a new clean title. They told me tags are $50 to license.