| I've never heard of anything like this before either. All 3 appliances suddenly became affected?
Is it to hard for you to disonnect your side of the meter, after shutting it off, and disconnect at one of the appliances and air compressor blow through the line? Possibly back-blowing it toward the meter direction?
Trouble is, if there was that problem of say rust scale or some film, perhaps every appliance now has clogged orifices, where just cleaning the main line will not help resolve that. You may be in for cleaning every appliance. Hopefully the valves are not affected. That would not be good if they were.
Go out by your gas meter and see if you have a 1/4 or 1/2 foot dial and run the furnace and time that fast turning dial. Tell us what your furnace's input btu rating is on the name plate in your furnace. And tell us which fractional dial you have, and how many seconds it takes to make one revolution. As an example my 80,000 btu input furnace takes about 12 seconds on my new 1/4 cu. ft. dial (it used to be 1/2 foot but they upgraded meters).  |