I'm having trouble with my Husky 350 so I decided to take it apart and check the intake boot fpr any tears or holes, and I wanted to check the crankcase bolts and piston/cylinder as well. The CC bolts were not super tight so I snugged them all up. I had used a common hose clamp on the boot previously and boot/piston/cylinder all looked good. However, I sprayed carb cleaner and blew some air through the ports where the impulse hose attaches but later realized that I have no idea what is going on in there. Could I have done any damage blowing compressed air through there? Is there a way to test whether it is OK w/o pressure testing? ( I don't have a tool/gauge for that) I searched for an answer about impulse lines and found an explanation that says it connects to the carb, but in the 350 it connects to 2 places on the intake boot, If someone can explain what the impulse hose does, that would be a bonus. Thanks, Larry