Thanks to all.
Sorry for not replying to your helpful posts sooner guys. I haven't had much time to get out to the boat as weather has been bad and some overtime at work. So far I have proven good water flow and condition of water pump impeller is good. I will be removing the tstat and checking for good flow exiting the manifold next. I have a feeling I need to do an acid flush as, although I cleaned water jacket as well as I was able to last winter when replacing head gasket, I think there may be some restrictions on the exhaust side of things. Will update my progress and efforts for either helpfulness or comic relief. Does acid flush require fresh water or will sea water work just as well? Asking because I am on a mooring and rowing to and from like Gunga Din with fresh water buckets no fun if sea water ok. Thanks
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