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new sbt seadoo 587 engine will not turn over with spark plugs in

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  • new sbt seadoo 587 engine will not turn over with spark plugs in

    i purchased a rebuilt seadoo 587 yellow engine from sbt i installed the engine and set the rotary valve like the manual instructed but it will not turn over with the sparks plugs in but turns over fine after i remove the spark plugs. Any thoughts other than a bad starter.

  • #2
    Re: new sbt seadoo 587 engine will not turn over with spark plugs in

    bad starter bad ground bad battery pick one .
    PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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    • #3
      Re: new sbt seadoo 587 engine will not turn over with spark plugs in

      Originally posted by 1fastski.com
      bad starter bad ground bad battery pick one .
      i have a new battery on it and i am going out to get a ne ground cable where is the best place to connect the ground cable should i put it on the starter mounting bolt

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      • #4
        Re: new sbt seadoo 587 engine will not turn over with spark plugs in

        You want it get it on the motor case itself. A nice solid metal ground.

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        • #5
          Re: new sbt seadoo 587 engine will not turn over with spark plugs in

          Originally posted by frankey01
          You want it get it on the motor case itself. A nice solid metal ground.
          one more thing when i installed the rotary valve i put the 360 degree mark at the bottom of the mag port with the mag cyclinder at tdc and marked the 130 degree on the case witch was right on the mark on the case so when i installed the rotary valve this put the bottom edge of the rotary valve right on the edge of the bottom of the mag port not a 1/2 inch away like i saw in a thread that bill o'neil sent out so is this correct

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          • #6
            Re: new sbt seadoo 587 engine will not turn over with spark plugs in

            You should be 18-20 degrees BTDC not TDC

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            • #7
              Re: new sbt seadoo 587 engine will not turn over with spark plugs in

              what do you mean?

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              • #8
                Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                What ski do you have? I believe your rotary valve should have a 147 degree cutout. The only way what you described could happen is if you have the wrong valve, a 130. THis however has nothing to do with your starting problem. Read the tech article on hard starting.
                SBT Tech Support is here to help with your problems.
                We try to answer each question quickly and accurately.
                Please do not use Private Messaging for Tech Support, use the forums.

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                • #9
                  Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                  Frankey, 18-20 degrees ? Where did that come from ? he is not setting the ignition timing.........

                  The old 587 engines use a 130 degree Rotary Valve. The top edge Valve should be about at the pointer mark on the case with the mag piston at TDC.

                  Do not confuse my postings about 147 and 152 degree valves with settings for 130 degree valves. They do not sit in the exact same places as each other. That is why they make degree wheels and service manuals.
                  Bill O'Neal <br>
                  WCM
                  <a href="http://www.watercraftmagic.com"

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                  • #10
                    Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                    I think I confused a couple threads - I could have sworn this one said he had a 1992 ski.

                    Anyway, yes you should have a 130 cutout valve, and you should time it to 115. There is a tech article that lists all this.
                    SBT Tech Support is here to help with your problems.
                    We try to answer each question quickly and accurately.
                    Please do not use Private Messaging for Tech Support, use the forums.

                    Comment


                    • #11
                      Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                      Originally posted by Bill O'Neal2
                      Frankey, 18-20 degrees ? Where did that come from ? he is not setting the ignition timing.........

                      The old 587 engines use a 130 degree Rotary Valve. The top edge Valve should be about at the pointer mark on the case with the mag piston at TDC.

                      Do not confuse my postings about 147 and 152 degree valves with settings for 130 degree valves. They do not sit in the exact same places as each other. That is why they make degree wheels and service manuals.
                      Bill thanks i got it running yesterday i found one of your postings that said to align it bt the closing of 65 degrees with the 360 at the top of the mag port and it started right up thanks. can you tell me if there is anything else i should check before i start the break-in process and i have one more question my 1989 sp has the old bn carb with a round body and i purchaced a stock rebuilt super bn from a 1991 sp with a 587 will i have to change the jets and how will i tell if i do need to? thanks again

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                      • #12
                        Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                        The jetting in the 587 Mikuni SBN should be right on the money.

                        Check to see if it floats ! LOL!

                        If you always go by the closing timing, you cannot go wrong no matter what valve you are trying to set.
                        Bill O'Neal <br>
                        WCM
                        <a href="http://www.watercraftmagic.com"

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                        • #13
                          Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                          thanks for everything Bill

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                          • #14
                            Re: new sbt seadoo 587 engine will not turn over with spark plugs in

                            I misread what he was setting I looked at it and thought his timing was off sorry

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