I agree with Joe it is either the head gasket or you run the engine without oil in the fuel. Either way you need to find out why it has no compression.
If the engine runs only when you spray fuel into the carburetor throat... that would indicate that fuel is not flowing through the fuel passageways. Double
If you have zero problem on both cylinders, in all probability the head gasket has blown between the cylinders... in which case (usually) compression
Thanks for the feedback! I am a year into owning a boat, and this is the first trouble I've encountered. I do have good spark. Unfortunately, with
There's only one filter that I see under the manifold, and there's another bulb in front of it but there's no filter in it, just a sensor it appears.