I just got my enticer running after 5.years sitting in a barn. Now my problem is that it will idle for as long as you let it but as soon as you hit throttle it bogs out and tries to die. Now I thought it was carb issues so I cleaned it out same issues. I noticed that when I push the hood open it pulled the muffler off the y pipe and it would rev right up. So I took exhaust off and it runs just like it should. And when you rev it up and put muffler back right on y pipe it bogs out again. Now my question is could my muffler be that plugged with a mouse best that it will cause this?