Do UATs have a lifespan?

On the note of air bubbles, I'm new to turbines, and I ran my k80 up. I messed up and I had a lot of air bubbles, some 1 inch long go into to the turbine. Expecting it flame out, nothing happened. It ate a long stream of bubbles. kept going.

I was using a 2 liter bottle and I pulled the fuel tubintout too far for about 5 seconds, it sucked air but still got fuel. Wierd.</p>