Question about 2007 Yamaha Royal Star Tour Deluxe

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Bike is cutting out and dies out when you throttle hard. symptoms of water in fuel, bad plugs, or flooding out. Pipes are black inside and black is coming out. I have put heet and foam in gas tank - put new plugs in and has not helped. only 2000 miles

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  • Bob McCorkendale Aug 28, 2010

    I changed the plugs and put the exact same kind in that was in/did not help?

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Make sure they are the right plugs, i have had many a yamaha rider swear they put the right plugs in and found out that they used the wrong resistance plug. there are two types of plugs, resistor and non-resistor, if you use the wrong type the bike will idle fine and even run ok at low rpm, but as soon as you throttle on, it sputters and wants to die, check that first and repost.

Posted on Aug 23, 2010

  • Bob McCorkendale Aug 28, 2010

    No the new plugs did not help??

  • macthelost
    macthelost Aug 29, 2010

    have you had your valves adjusted since the bike was new? and if so by whom, as that is the next area i would look at. also if you pipes are fouling dry and black, you are running a rich. if its black and wet, you are burning oil, but only if you also have slightly bluish exhaust smoke. all of these could cause your symptoms.

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I kinda had that problem, my bike whould die when i gave it gas, i cleaned out my carbuator and it was full of black gunk put new spark plugs and it runs like a champ..hope it helps you out

Posted on Jul 27, 2014

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