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  1. #1
    Member
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    Aug 2019
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    Default Changed the vacuum hoses

    Still a stumble after changing vacuum hoses. I noticed this happens on slight acceleration not on heavy acceleration

  2. #2
    Very Active Member Chupaca's Avatar
    Join Date
    Oct 2012
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    San Diego, CA.
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    Default little more checking...

    Did you make sure they were both the same length...? Try starting the engine and letting it run and then spray some WD40 around the intake boots and see if the RPM's change so to rule out leaks there. Also did you clean the throttle body...? Then there have been times when the plug wires fail and give a similar stumble as well a plugs. Don't know how much has been done so hard to know what could be the issue.
    Gene and Ilana De Laney
    Mt. Helix, California

    ​2012 RS sm5
    2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black

  3. #3
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    Default

    had the bike at a dealer they changed injector in rear cyl,venturies replaced,spark plugs,wires,evap canistor and purge valve. problem fixed for about a 100 miles then started all over again

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