Garage furnace...can't light pilot
If it's accessible easily enough to go sniffing it, it should be easy
to see if it can blow bubbles with soapy water. One std way to check
for small leaks, very small leaks.
You may just have to manually hold pilot valve open for a while until
gas gets to the unit.
From what you say, and the way you say it, I'd first check the gas
supply.
J
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