Flux core wire?

As far as I know they have cause mine will not arc unless the trigger is pulled. So far so good even with my lack of skill I haven't had any problems! It take me a little while to get my wire speed dialed it I couldn't get a puddle started and I was getting a lot of spatter I just kept speeding it up till I got a decent puddle I run it on 7 with selector on hight with thicker metal and on low I run it on 5 with thinner.