check bobbin make sure it is not put in backwards when you put in bobbin thread for my machine it is inserted clockwise bobbin thread should be pulled through spring shape to little T I go ahead and put thread through hole on bobbin case to get a more even tension on thread .
After case is installed in machine turn hand wheel while gently holding top needle thread till needle goes down and back up gently lift up on top thread and bottom thread should come up and you are ready to go.I also have to lower my feeddogs in order to do FMQ hope this info helps Angie