susanandlance
Well-Known Member
Tom, it makes since to me. If you have the seacock open and a/c off, water will flow through the system on plane by being forced into it, I put a tee in mine so i can hook garden hose to it while on the trailer. Water flows out before the a/c is even turned on (forced induction) thats why it will operate on plane. My moneys on a bad water pump.:grin: