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A O Smith gas water heater leaking

4664 Views 3 Replies 3 Participants Last post by  AllanJ
We discovered tonight that our water heater was pouring warm water out the back into our crawl space. I shut off the intake valve and turned off the gas. Tested it after about 20 minutes, and when the cold water intake is open, it leaks of about a cup a minute of the still-warm water. Is it possibly caused by a faulty valve that doesn't shut off intake when tank is full so it overflows and runs down the sides?
8 year old A O Smith FSG 50 216
Any suggestions would be welcomed!
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20 year old water heater

Thanks for the quick reply, Bill.
The house was built in 93, but it looks like the heater was manufactured in 1991. That explains why there were stickers for 3 different service companies on the water heater. Looks like we're shopping for a new one today. Any suggestions out there?
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