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Key-Chapter t1_it9fmfs wrote

If you heat the thermocouple with a torch the valve can pass gas to the burner without the pilot lit if the valve gets turned to on. If you can get at the vent you can cover it with a bag until the pilot is lit to stop the draft. Looking at the rust your pilot orifice is probably dirty and needs to be cleaned. Check the end of the thermocouple if it's missing a piece or burnt off it won't hold.

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