Hello! I removed the auto-choke from my Keihin KT carb. Is this what it normally looks like? The needle and cylinder are protruding from the barrel by 20 mm. When I plugged it into 12V, the cylinder extend so that the needle protrudes by about 24mm after 5 min.
I am debugging a problem where my 2006 LX150 will start and run for about 30 seconds, slowly losing RPMs, and then stall. It will stall immediately if I give it any throttle. It won't start again. After several hours, I've tried to start it again and it does the same thing. It is seemingly the identical issue to this thread: Help - LX 150 Carb Clean (Keihin CVK). Anyway, i could imagine such a problem being caused by a choke that is always engaged, meaning it always creates an over-rich fuel mixture. That would help it start, but would eventually make the mixture too rich to combust, perhaps flooding the engine, and making it hard to start until the mixture leaked out. Thus, it makes me wonder if my autochoke somehow always engaged. Haynes unhelpfully gives a spec of "10mm," whereas other carbs have an Initial and Final spec.
I understand that when the needle is retracted, it runs rich. When extended, it blocks an auxiliary fuel passage and results in a leaner mixture.