I installed a new impeller-waterpump kit in my 1979 Johnson engine. I ran the engine when I was finished on land and I noticed a good amount of water comming out of the exhaust relief ports.Is this normal with a new impeller? I also noticed in the front part of the lower unit by the oil level plug there was a stream of water comming out like the case did not seal right or it had a possible crack, but It looked like the hole was suppose to be there. The engine was running good with no overheating problems like a had before.Do I have anything to wory about?