Welcome to the forum! Some folks have had to add a second washer to the inlet and then keep the antifreeze even with the intake to get the antifreeze to flow. If you do the air blow out method and you have a washer, remember to run the washer with some antifreeze in it or the water held in the pump will freeze and crack the pump housing.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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