Question about 2006 Harley Davidson XL 1200 C Sportster Custom
Not sure exactly what the problem is but if I had to take a guess, I'd say that it is running lean and once it's good and hot, it's just a bit too lean to idle correctly.
The bikes come jetted or mapped, depending on whether its a carbed or fuel injected bike, on the lean side to meet EPA emissions standards. The addition of the V & H pipes probably made the situation worse.
If it's a carbed bike, you need to change the low speed jet up one size and add a 0.020" inch thick washer under the needle. Try just changing the jet first.
If it's fuel injected, I don't know because I don't work on the injected model bikes, you'll have to take that to the dealer and see if they can remap the fuel system control for you.
Posted on Jan 31, 2010
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Posted on Jan 02, 2017
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