First, thanks for the suggestions. I have the tank bypassed right now, running out of 5 gallon bucket with diesel. I will drop the tank, but I am pretty sure I'm going a ton of settled water, and possibly some microbe growth as well.
As far as modifications, the system will operate to keep...
Started it up in morning(65*) . It idled fine, noticed coolant light on, while engine was running (maybe 1 minute or less) opened coolant overflow tank to add coolant. It revved up on its own, then died. I finished adding coolant, went to restart it, same issue. Revved to 2500rpm, then died...