This is a question for anyone who lives in a cold area, where winter temperatures are often in the teens and 20's, AND still has the mikuni carburetor.
I'd like to hear about how your choke operates under cold conditions so I can compare it to mine.
When it's below freezing it seems like the choke in my truck takes some time to "engage". Here's what happens:
I hit the ignition and the engine starts right up, but if I don't keep my foot on the gas the engine runs really rough for a few seconds (rpms hovering between 400-800) and then it stalls. If i keep my foot on the gas for 30-45 seconds then eventually I feel that the choke kicks in and maintains the rpms at around 1,000 and slowly goes up to 1,300 ,without having the foot on the gas. After a few minutes running at the higher rpm, when the engine is starting to warm up, it will drop to the normal operating rpm, around 900.
So it seems like the choke it's doing its thing, it's just that it takes a minute to get going when it's really cold. In 40 degree temps the choke kicks in right away, it seems.
I've removed the air intake to see if the choke is stuck, but it seems to be moving fine. With the engine off, if I pull on the throttle the butterfly closes right up.
I'm wondering if this how all of them work, or if it's something off with mine, and it should kick in from the get go.
Any thoughts welcomed. Thanks.
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