Dave, There are two water circuits in our engine. The antifreeze circuit called "fresh water" and the "raw water" circuit that you are working on. If the engine got warm and the heat exchanger in back of the engine stayed cool, the raw water is not absorbing heat from the engine. If the engine got warm and the coolant heat exchanger stayed cool, sounds more like the engine coolant pump is not working. That's the pump operated by the alternator belt.
Universal Part No. 302756, PUMP FRESH WATER However, that pump would not effect water flow out the exhaust. And that must be your first priority. You'll get it. Chuck > On 06/06/2025 4:48 PM EDT David Knecht via CnC-List <cnc-list@cnc-list.com> > wrote: > > > Some progress to report. One step forward. One step back. I checked the > strainer last night and all good. Reassembled hoses and found no water coming > out of pump inlet hose at pump height but dropping it to bilge height got > good flow. I could hear lots of air being pushed out and then just water. > Hooked everything up and pulled hose where raw water enters mixing elbow. > Started engine and got a gallon in there time it took me to get from key > switch to engine compartment. Looked good. Started engine and seemed i was > getting some water out back and pump housing stayed cool. But engine temp > started to rise in a few minutes so i shut it down. Hoses and heat exchanger > seemed cool. I know the antifreeze tanks are full. Why is antifreeze not > cooling engine now? I am thinking about taking the mixing elbow off since it > is the only thing i haven’t looked at. If that were partially blocked what > would the engine do? Dave > > Sent from my iPhone > Your contributions help pay the fees associated with this list and help to > keep it active. Please help by making a small contribution using PayPal at: > https://www.paypal.com/paypalme/stumurray All contributions are greatly > appreciated. Your contributions help pay the fees associated with this list and help to keep it active. Please help by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
