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

Bonjour Philip,

Sorry, I hadn't read accurately your message about the drill!

Personnally, I have not seen the input valves move on my engines, I guess because their displacement is very small. As you have compression, everything shouls be right

Even without the drill, do you feel a succion on the carburator when you turn the flywheel of your engine ?

And stupid question, just for fun, are you cranking your engine the right way? For information, I made this mistake on one of my first engines!

After a test run with your drill, did you check if the plug was wet ?

Did you try to start you engine with a drop of gas directly in the carburator ? Did you check if the hole in front of the needle valve is clean ? 

Starting my M92 has been a real pain and Gil helped me to fon the appropriate settings

Before :

After many try and error :

I had also had this kind of problem with the M91 (vertical), and a friend had made me a special needle screw to fix the problem.