I have a a problem with my mr. heater. When I turn it on it blows puffs of smoke and doesn't ignite. It will ignite if I take and lift the cover slightly on one side it'll fire and run like a champ. I've put a new plug in it i've adjusted the pressure I've changed the filter i've cleaned the spay tip. and it is getting sufficante fuel. whats next?

Heating & Cooling - Mr. Heater - Portable Buddy