Have Boat Questions? Ask a Boat Repair Expert.
Hello, I'm Tan. Welcome to JustAnswer. I'm reviewing your question and will reply momentarily.
Ok the first thing we need to do is a compression and spark test. The compression is real important at this point since it was over heated. We could have just a blown head gasket. If compression tests good then we need to check spark. This requires the use of a spark gap tester to test the strength of the spark.
Can you do these checks?