Question about Harley Davidson XL 1200 S Sportster Sport Motorcycles

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89 XLH1200, after riding for about a half hour, the bike intermittently has sudden loss of power then regains.Almost in a jerking way, then eventually shuts down,will not start until cooled and the same thing happens again. All stock,was in storage for about a year. maybe the VEOS?

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  • bobnsc Jun 24, 2009

    Thanks for the reply, I did leave out one piece. The battery also seems to drain in this situation. I let it sit for 15mins to cool off and it starts without a problem, then it starts the same symptoms all over again. I have checked thru the gas cap, replaced all the air, fuel and oil lines,(bike sat in storage).carb and tank has been cleaned.This particular bike has the CA emissions on it.My next step is to start tearing down the computer module layout piece by piece, until I can pinpoint the component.( side thought) Maybe intake seal off the carb manifold? Well thanks for helping, If and when I do find what it is, I'll let you know. I have read this problem on several other sites.

    Thanks again



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Maybe vapor lock, check gas cap. It should let air pass through. Next time it happens, open cap and close and see if it starts right back up.

Posted on Jun 24, 2009


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