Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thanks guys 


Am quite certain that a thorough cleaning of the boiler will eliminate the issue.


I havenīt had the chance to attend the problem yet, but i re-investigated the residue laying in the sink, and found it to be black as soot but hard and scaly like limestone.
Normal limescale i would understand, but how it got charcoal black and laying loose in there, is somewhat of a mystery.