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Thread: 2004 gp1300

  1. #1

    2004 gp1300

    I have a 04 gp1300 and I just installed

    Boyesen pro reed series
    13/19 stainless concord impeller w/new housing
    riva pump seal kit
    riva free flow exhaust
    d-plate with clip
    +20 aluminum exit nozzle
    87mm reduction nozzle
    new fuel injectors
    R&D air filter
    new spark plugs

    I took it on the water and it idles great, if I pin the throttle for a stand still it will only rev to 5000rpm. Once I get up to about 20-30mph the motor will finally rev up to about 7000rpm and the ski will take off. Tops out at 65-67mph. My question is why am I having the bogging problem in the mid range? It will occasionally rev up on take off however most of the time it’s boggy until I get up in speed or I hit a wave. Any suggestions? Thanks in advice!

  2. #2

    Join Date
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    How are the oil lines and fuel lines?


  3. #3
    Quote Originally Posted by Jonesyfxr View Post
    How are the oil lines and fuel lines?
    The fuel and oil lines look good. I pulled the plugs and they looked fine and all of them looked the same.

  4. #4

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    If you’re has powervalves… they working?

  5. #5
    Quote Originally Posted by Jonesyfxr View Post
    If you’re has powervalves… they working?

    That is my next check. I can hear the motor cycle when I shut the ski off. Could it be that the power valves are not opening?

  6. #6

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    Quote Originally Posted by Chevytime View Post
    That is my next check. I can hear the motor cycle when I shut the ski off. Could it be that the power valves are not opening?
    Yes, they should open up around 5000 rpm...you can check out of the water

  7. #7
    Quote Originally Posted by Jonesyfxr View Post
    Yes, they should open up around 5000 rpm...you can check out of the water
    What’s the method for testing? I know to it cycles when the motor is shut off. What is your suggestion?

  8. #8

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    Rev it up and you should see them opening

  9. #9
    Quote Originally Posted by Jonesyfxr View Post
    Yes, they should open up around 5000 rpm...you can check out of the water

    ok. I noticed they had a bunch of free play in the linkage. I went ahead and ordered the Wave water linkage kit. I’m hopping that will help.

  10. #10

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    Take the power valve covers off and make sure there’s also Waveater clips on the PV’s.

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