Well, decided to clean up the old glow plug that was originally in the engine and discovered it’ll still heat up! Put the engine on the old busted plane and filled the tank about half full with fuel intending to see if the engine will run, but discovered the needle valve is also frozen solid.
Not sure how to fix this one. I have it completely submerged in a lubricant/penetrant (mouse milk), but I think adding heat was ultimately what freed up the carb. Don’t think I can do the same with this as half of the needle assembly is plastic and I don’t want it to melt. Anyone have tricks to this without risking permanent damage?