We extend to you a cordial "WELCOME ABOARD !" Come on in, make yourself at home, we are a friendly group of enthusiasts, and we also appreciate the classic Chris Craft Roamer, Corsair, and Lancer boats too , as they are all on the same family tree and share much in common ! Just start by posting a note introducing yourself to the group, that's all it takes here (we don't ask for or retain any personal information here, because our intention is to just "have fun and share information".
...you changed the impeller? If your water hookup is to a hose w street pressure, it will push the water through. For drawing water up from the outdrive via the bucket though, if your impeller is compromised it can't generate sufficient suction.
If the impeller is old and you find it has "detonated" into pieces, it's important to retrieve any pieces that may lodge in the cooling system that create blockages and potential overheating issues.