Plugged the heater hose outlet or inlet. Then filled it up and ran it up to 165. Then took it around the block to warm it up some more and see if it leaks after building pressure.
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Question, why did it not build pressure? The top hose wasn't tight. No leaks as far as I could tell and temp was 190. Seems to run about 170 in town no getting on it. I left it running in the driveway to see any leaks. None and that's when it got to 190. Could easily squeeze top hose.