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

Hi Raphael, After starting it first try gentle adjustments to the needle valve. I have had to open it nearly a full turn on occasion. Once running, I open it slowly until it is running better. Once it warms up a little more I can close it slowly then move it just a little at a time until I have the best run position.

Are you mixing a little oil with your fuel?
Before the run.....
Do you tip the engine on it's nose to put a couple drops of oil on the piston skirt and bore when the piston is at top dead center.

You can also put a couple drops of acetone in your fuel to help it vaporize better.