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Old 09-02-2017, 10:05 AM   #4
AcampoDave
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Join Date: Feb 2013
Location: central California
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Re: 5/8" heater core hose blowing off!!!

Did you get all of the air out of the system? Air gets compressed under pressure causing things to "let go" . ( You should see a swimmimg pool filter blow its top when the tank is full of air). Water on the other hand is pretty darn tough to compress.
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