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

Thanks Rod !

Got new set of spark plugs to just eliminate any issues. The tips of the original plug seemed cracked.

Managed to filed the exhaust valve rod on one of the cylinders, so it is sitting flushed and firing okay.

The only other thing, which I also seen in others video too is the right cylinder ( oppose to fuel tank one ) doesn't fire okay and has misses. I see a black wetness out of the exhaust pipe. I swapped the plugs and same happened. The valves seem to be okay from what I can. Haven't added any oll to crankcase and was running the engine on Zippo with tiny bit of 2 stroke oil. Other exhaust is clean as .

What could be the issue ? Almost seems too much fuel in the cylinder and when I take the plug out the gap is covered in fuel but no fouling happened.

Impressive little thing overall