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Thread: Low rpm & speed

  1. #1

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    Low rpm & speed

    I have an 03 Sportster 4 TEC with the 155 hp engine, the last 2 times I had it out I noticed it would only run between 6500 and 7000 rpm, before that it would do 7500 to 8000 rpm, my question is would moisture in the fuel cause this and should I keep stabilizer in the fuel?
    The reason I ask is, I live close to the water but because of life it might sit for a week or 2 before I take it out, when I do go out I never fill the tank all the way, I'm going to fill it with premium fuel and put marine stabyl in an run it, hopefully it's that easy

    Thanks David N


  2. #2
    Swedish Viking Craigo's Avatar
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    I had a very similiar problem with my RXT. I replaced the spark plugs and the problem went away (thanks again BD~!) ... I hope that's all you need to do!

    GL

  3. #3
    JFizzleJR's Avatar
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    Quote Originally Posted by Dnebe View Post
    I have an 03 Sportster 4 TEC with the 155 hp engine, the last 2 times I had it out I noticed it would only run between 6500 and 7000 rpm, before that it would do 7500 to 8000 rpm, my question is would moisture in the fuel cause this and should I keep stabilizer in the fuel?
    The reason I ask is, I live close to the water but because of life it might sit for a week or 2 before I take it out, when I do go out I never fill the tank all the way, I'm going to fill it with premium fuel and put marine stabyl in an run it, hopefully it's that easy

    Thanks David N
    I don't think the rev limit on the 03 sportster 155 is 8100 like the SCIC skis

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