1985 Nighthawk S Carb Issues - Motorcycle Forum
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post #1 of 4 (permalink) Old 09-18-2009, 08:08 PM Thread Starter
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1985 Nighthawk S Carb Issues

Hi, I have a 1985 Nighthawk S with 1000 miles on it. It's sat for a while. I took the carbs apart and cleaned them. I starts right up and runs great in the higher RPM range (4K- and above) and idles fairly descent. It's the 2K-4K rpm range that it sputters and is sluggish. What can I do to correct the problem? Thanks! Kevin
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post #2 of 4 (permalink) Old 09-20-2009, 09:23 PM
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If you leave the choke about halfway does it help?
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post #3 of 4 (permalink) Old 09-21-2009, 12:26 AM Thread Starter
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Yes, It helps alittle bit.
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post #4 of 4 (permalink) Old 09-21-2009, 12:31 AM
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Sounds like it's running a bit lean. I'm no expert on carbs but you might have to shim the needle a bit. I had to do the same on mine. It had a flat spot around 3k-4500.
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