So I haven't had time to work on this but started tinkering again this morning. Pulled the plugs sprayed starting fluid down the cyls, pulled the fuel mixer sprayed some fluid in there and the machine wanted to run. So thats good news.

My coolant system pressure tester doesn't have the right adapter for the lift so I havent been able to test for coolant leaking in to the mixer.

When I pulled the mixer there was more coolant and just gunk inside. The motor was pulling a good vacuum through the mixer so I am baffled as to why its not pulling lp into it.

I am gonna do a general tune up on it, and clean and rebuild the mixer and see what happens.