Just replaced the impeller on 68 85hp Evinrude, but hot light still comes on after a couple minutes idleing. How do I test to see if the light is working properly and do they get weak over time to where it isn't really hot? If it is working properly, what would cause one to get hot? I made sure the copper tubes lined up when I put the lower unit back on, and I ran water through tubes with garden hose when I had lower unit off and all was clear.
