Question about Harley Davidson XL 1200 C Sportster Custom Motorcycles

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I have a 1998 Sportster 1200 custom that idles rough and has black smoke comming from the exhaust. It has been sitting for a little while with Seafoam in it. It starts fine but I have to have the choke on our she will die on me. Any ideas?

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  • Anonymous Mar 17, 2014

    The bike blew a little black smoke after sitting in the cold weather. never seen black smoke from the exhaust before. is there a reason for concern?

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I have the same bike, but never ran sea foam in it but ill tell ya when i put sea foam in my mustang it blew black smoke for a good while, but i thinks its normal for it to do that, i would run it for a while to get all that sea foam out of there, as far as the idle being rough what do you mean, cause mine idles funny too, but i was told its normal for it to be idleing like that. Man i hope i help you out some. You wouldnt know the size of the fuel line is would ya??

Posted on Aug 20, 2009

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Drain fuel tank and refill w/ fresh gas.

Posted on Jul 04, 2009

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