I have a technical thought: how do you know you even have gas supplied to the gas valve? Do you have a manometer to check gas pressure at the valve?I have a Miller natural gas furnace in a moble home. The old gas valve, the pilot would not light at all, not even light and then go out. I installed a new gas valve and the same thing is happening. Does any one have any ideas?
It is possible that the gas cock or anywhere before is clogged, not allowing gas to the unit thus no light.