Here is one I cause I fumbled upon. I used a thicker gasket on the face plate on the pump rather than the Yanmar paper gasket. That resulted in the impeller not seating tight against the face plate and loss of pump flow. One more item to check.
Steve Mallett On Thu, Jun 5, 2025, 1:10 p.m. David Knecht via CnC-List < cnc-list@cnc-list.com> wrote: > Hi Dennis. Did that. No apparent problem downstream. No water is getting > to heat exchanger which is first thing downstream of pump. Dave > Sent from my iPhone > > On Jun 5, 2025, at 12:05 PM, Dennis C. via CnC-List <cnc-list@cnc-list.com> > wrote: > > > Focus your investigation downstream of the pump. Disconnect the hose from > the discharge of the pump or the inlet to the exhaust elbow. Start the > engine and observe if you have flow. > > -- > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > On Thu, Jun 5, 2025 at 10:31 AM David Knecht via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Eliminated many possibilities yesterday. Pump shaft turning fine. >> Replaced impeller. Still not pumping water. Has anyone had a priming >> problem? My current hypothesis is that either the pump is not self priming >> or the seacock is partially plugged limiting flow. Water comes into raw >> water strainer with lid off but no idea if it is normal rate or not. Dave >> >> >> > 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.
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.
