Catalina 30, Universal M25 - No water running from the exhaust, issue with overheating. Please help!

[PickledHerrings]

If your impeller was okay it might not be now. That bottom spline is backwards.
Always rotate your impeller on install with the splines in the direction they would normally go.

 

[Davidasailor26]

If your impeller was okay it might not be now. That bottom spline is backwards.
Always rotate your impeller on install with the splines in the direction they would normally go.

It’s not uncommon for one or more of the impeller blades to flip backwards if the engine rocks backwards a bit on shutdown. The blades will flip the right way as soon as the engine starts again.

Maine Sail chimed in to confirm this can happen - Impeller Vanes

 

[Barnacle Bill]

Make sure your seacock is open.

 

[Hayden Watson]

@ChrisVR1994 did you ever get your overheating issue resolved?