I've asked a related question before, but this is new. I have one of these propane heaters: As months go by, it has an increasing habit of spazzing out. It will frequently do this in a strong gust. But with even a little wind, and more often when it is set on low, it will spontaneously and startlingly begin screaming like a rocket engine. When it does so, the mantle immediately starts cooling. It does this in one heater more than the other, so there's definitely some factor internal to the device, not just wind or fuel level. It will occasionally spontaneously stop doing this, but sometimes I have to shut it off (by nudging it so it's anti-tilt safety mechanism activates, cutting off fuel.) I can always reactivate the fuel, and, if it's still hot enough it will auto-ignite and continue to heat up back to normal. Obviously, something is happening to the position of ignition prior to the mantle, causing it to still burn (albeit very loudly), not to heat the mantle properly. Let's pretend you've already suggested that I a] take it apart and clean the nozzle parts, and/or b] not mess with the mechanics of compressed explosive, flammable fuel delivery. What is happening when it goes into this rocket engine mode? Is the "ignition front" moving back from next to the mantle to some other point farther inside the fuel feed?