Question about 2002 BMW R 1150 RT (ABS)

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Bike backfires and I can't get a smooth ride

When the bike gets warm it backfires when I'm throttling down (sometimes up) and I hold the throttle steady in mid RPM's and it is not a smooth ride, it feels like it's missing. I've had it in to two repair places and they both have adjusted the fuel injectors and say it's fine. I'm wondering if the oxygen sensor would have anything to do with it?

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  • Dick
    Dick May 11, 2010

    This problem is endemic to the 1150. It's called surging and there is no known cure. BMW does not know what causes it for sure. Some bikes do it, others do not. Even the 650s had the problem between 3-4000 rpm they buck a little if you hold the throttle steady. The cure for the 650 is use an Irridium plug. I don't think the 1150 has a cure at all. But you would be well served to find a BMW forum and ask around there. You will get some ideas of how to minimize the problem. Good luck.

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I would say it is a faulty engine temp or Air temp sensor,

Posted on Jun 29, 2009

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