[quote=Dan O.;19161]** when I turn the dial knob the flame always stay the same no matter how hight. what can it be? **
Which "flame"? The pilot flame or the oven burner flame??
In either case that symptom could be caused by a defective thermostat or possibly even a plugged gas line... depending on the design of whatever make and model of appliance it is.
Dan O.
Hi Dan thank you for answering my post is the oven burner flame that stay the same when i turn the knob, is a very old oven and I think is the thermostat is not working base on my research online, but I can figure out the brand look like W with a little crown on top. Let me know if you can Dan

I like the avatar look cool! Homer