I went to the lake this last weekend and my engine overheated. I have a '90 Mercruiser Alpha1 4.3L inboard/outboard.<br /><br />I replaced the thermostat and took off the water circulator to make sure it was working. It seemed to be. I do not have water coming out of the prop and water didn't seem to be circulating when I removed the thermostat.<br /><br />Is there another idea someone has? I'm not a mechanic, so please explain. I'm trying to avoid waiting 4-6 weeks to get the problem fixed.<br /><br />Thanks.