How do I know if my choke is open or closed?

When the choke butterfly is allowing the most air flow, without restriction, it is open. Like a door. Open lets things through. when the choke is restricting the flow of air, it is closed.Click to see full answer. Correspondingly, should the choke be up or down?If you have the NT carburetor the choke is on (closed) when the lever is up. If the engine isn’t running it doesn’t make any difference where it is. The choke should be off (open or down) when you’re riding.Also Know, what is choke position? Similar to the throttle, the choke plate rotates from a horizontal to vertical position to open up the passageway and allow more air to get by. The choke is located before the throttle, and manages the total amount of air going into the engine. The choke is only used when starting a cold engine. Also, is it bad to run an engine with the choke on? Basically it can’t draw enough fuel with bad Diaphragm. If the engine only runs with the choke full on it means you have a vacuum leak and the engine runs too lean with the choke off. Some times a back fire into the carburetor will blow a pressed-in BB out of a drilled passage way.What happens if choke is left closed?When leaving the choke on for a longer than needed period of time, the engine will consume a lot more fuel than it otherwise would. It also kills the performance of the engine as well, because the engine will not be allowed to draw as much air as it would normally be able to in higher RPM situations.