Confirming Bad Water Pump
I think I have a bad water pump but wanted a second (or third) opinion before I start the job. Here are the symptons I encountered while dewinterizing and working to flush the lines: 1. Freshwate...
Forum Discussion
What make and model water pump do you have? After a trip to Az. in the winter when temps got into the teens my Sureflow 4088 pump did the same thing. After taking it apart, cleaning and reassembling it several times I finally realized the problem was not the diaphragm it is pretty thick durable rubber, it turned out to be a small air leak along the parting plane and no amount of tightening the screws would stop the leakage. After adding some silicone sealant along the parting plane the pump worked fine.
