Upper thread has a loose stitch once in a while

March 2021 1 6 Report

Upper thread has a loose stitch once in a while

My machine sews along just fine then once in a while there is a loose top stitch, then it continues just fine. The bobbin thread is good.

Sewing Machines - Janome - Magnolia 7330 Sewing Machine

Check that bottom and top threads are the same quality and as well I would change the needle as a first port of call ...good luck