Question about 1982 Honda VT 250 F
I have just rebuilt the top end on my CT110. I cannot get the idle to run at a consistent low speed without dying. If I put the choke on slightly it runs smoother but at a higher speed. I then must lower the idle speed. As soon as I rev the throttle the choke returns to full open and the engine will not idle for long without dying. I sense it is running too lean. I have more fully opened the pilot needle but seems to have no effect on engine rpms or enrichening the mixture. There is a slight stumble upon quick acceleration. I have checked the filters and find no restrictions. The float is allowing full filling of the bowl.
On most bikes, opening the pilot needle screw actually leans the mixture , as it is an air screw, not a fuel screw. I'm not for sure that this is the case in your bike, but if you can find out exactly what carb it has, I can tell you. Also, a freshly rebuilt engine is going to idle erraticaly until the rings are seated and broken in. Be sure to check your carb boots and vaccum lines for cracks and leaks, as a vaccum leak can cause a lean condition.
Posted on Sep 12, 2009
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Posted on Jan 02, 2017
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