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

yes definitely,(exhaust smell) especially if you run it to rich, I ran it in the house for about 30 seconds to show Ang I got it working good...then back outside it went, even in my closed shop 15-20 minutes was enough to make a noticeable stink with some eye irritation. i was asked some questions about it from a you-tube viewer & this was my reply...... "it really only has one speed ,you can lean out the carb or make it more rich & change the speed somewhat, I am still learning how to operate it but I found about 1/2 turn counter clockwise from completely closed helps it to start (a rich position) then when it warms up you can adjust the carb knob back to not quite a1/4 turn, it also helps to squeeze the fuel line right under the carb (before starting) seems to act like a primer bulb & definateley helps cold starts. there is no on/off label for the switch, but mine is (looking from the back) switch to the right is on".
i'm going to experiment on different types of gasoline & see what it prefers. i'll get back on here when I know anymore. i also intend on making a  miniature roll around cart for it.

Bruce, do you have to run it on gasoline, or would something like Zippo lighter fluid be adequate and maybe smell less???  I'm going to need some guidance on fuels as I see various mixes talked about including addition of WD-40, Coleman camp fuel etc.

Rog