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  1. #1

    Join Date
    Jun 2006
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    Unhappy Help! Problems with my GP1300R!!!

    Hi Guys,

    I got this big issue with my 2003, GP1300R.

    I have removed the cat. and installed a Jetworks O-plate. (with sensor chip)
    Now my jet only runs about 40 mph. and the acceleration is very poor.!
    Is runs 5500 rpm on water and 8000 rpm when it´s out of the water???

    I have checked the complete exhaust system, and there is nothing wrong to see.?

    Anyone who might knows what it is?



    PART 2.
    I don´t think it´s a sensor... When it´s on land, it runs normally (8000 rpm) and in water, poor acceleration, low top speed. (5500 rpm)

    That´ could not be a damaged cooling water-sensor, right?

    P.S. The yamaha info-computer tells me nothing... everything is fine...

    This is very strange... And right now is the weather good in Denmark. Talking about bad timing.
    Last edited by jesperducati; 08-06-2007 at 05:56 PM.


  2. #2
    Duke's Avatar
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    Did the cat fail? Were all the pieces recovered?

    Could also be a water leak at the O-plate into the exhaust.

  3. #3

    Join Date
    Jun 2006
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    Yes, the cat did fail... All the pieces where recovered in the exhaust and some went out in the open sea..

    A water leak from the o-plate? please tell me more...

    thanks...

    Quote Originally Posted by Duke View Post
    Did the cat fail? Were all the pieces recovered?

    Could also be a water leak at the O-plate into the exhaust.

  4. #4
    Hydrotherapy's Avatar
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    did you use new gaskets when you installed the o plate and were the surfaces 100% clean..

    some will reuse gaskets there but they can fail its just a thought

  5. #5

    Join Date
    Jun 2006
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    Denmark
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    NO, I did not use new gaskets, i used the old ones... could that be the problem? then it must show somekind of leaks there... and can not see any leaks there...

    Quote Originally Posted by saltygpr13 View Post
    did you use new gaskets when you installed the o plate and were the surfaces 100% clean..

    some will reuse gaskets there but they can fail its just a thought

  6. #6
    Duke's Avatar
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    Could be leaking inside the pipe and not outside. Also take the water box out for inspection and make sure unaccounted for pieces are not lodged.

  7. #7

    Join Date
    Jun 2006
    Location
    Denmark
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    Hi again.

    I have dismount the exhaust... nothing to see, but the D-plate was a little bit wet on the top... gaskets seems to be ok. but can not see if that should be the problem!?
    There is a sensor near the waterbox. Could that have some influence on my problem, if it was damaged?

    By the way, when the jet is on land, when I give it full throttle, then it stutters / make explosions or what you call it... is that normal?

    Can really not see what the problem is? Please help...
    Last edited by jesperducati; 08-06-2007 at 05:42 PM.

  8. #8
    KamikazeGPR's Avatar
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    When I did the d-plate on my 03. I reused the gaskets(they were in perfect shape). But, I did use copper spray a gasket on re-install. Ive havent had any leaking problems in 90+ hours.

    Im sure the gaskets wouldnt be reuseable again with the spray gasket on them, but I have no intention of taking it apart again for anything.

    On land, you will get some strange sounds when you give it throttle. It's so easy to hit the rev limiter with no load on the prop.

  9. #9

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    Apr 2007
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    sounds like a sensor is telling the computer its too hot. .02

  10. #10
    Chrisrokc's Avatar
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    I cleaned the gaskets used copper spray for it.

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