Ok, you got us thinking so we went back outside and started checking from the tank. We noticed the hose clamps holding the black hose from the tank to the pipe that goes through the garage wall was loose ..... yikes....you could spin it around. So that would be the problem. We are off to purchase a new hose and clamps. The current hose has become hard as well....likely due to the heat and sun here in AZ. We will put the system back together and try it out. We did take the flame arrestor out and try the system again but it was the same. Hope this works! Donna
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