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Thread: 90 SeaDoo SP

  1. #11
    PWCToday.com Is My Home Away From Home jerrspud's Avatar
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    Re: 90 SeaDoo SP

    still tweaking the settings. Sunday we went to the lake and my daughter in law said it was running funny. I road it for a while after work and it felt like the same old miss, but not as bad. I put some more tape on the FA to see if it needs bigger jets, and it ran pretty well. I think I should bump up the low speed jet because it ran funny at half throttle and above,a dn it ran pretty well with the tape at all speeds.

    I GPS'd it and the top speed was 41.38 MPH
    Last edited by jerrspud; 09-19-2012 at 10:20 AM.
    Jerr
    SeaDoo FAQs
    Kawi FAQs

    92 Kawasaki 550SX 89 550PP, 44MM SBN carb, Westcoast exhaust, Mariner head, OceanPro rideplate
    90 Sea-Doo SP Quadra-Fin rideplate, Solas 14x19 prop, Tuned Pipe, 147 RV, Mariner intake manifold , 44MM SBN Carb, K&N performance arrestor, 91 XP hood
    96 Sea-Doo SPX X4 Hull- R&D rideplate, NuJet prop, RAM cup holder, Commercial Tiny Tach
    88 JS550
    pile of parts, but it's all there

    Quote Originally Posted by JetDreams
    your finger is the trigger to success...

  2. #12
    PWCToday.com Is My Home Away From Home jerrspud's Avatar
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    Re: 90 SeaDoo SP

    still at it


    found a crack in the fuel line in the tank a few years back so that's why it could never get it dialed in... and now I'm back to tuning.

    I put the 120L and 145H (specs I got from Bill O) back and finally tested it. ran too rich back in 2019.

    6/16/21
    Tested pop off and it was was too low. it was under 10psi.

    bent the spring and got it up to 15 psi pop off on a 2.5 N/S .. didn't have a black spring

    6/17/21
    it ran great.. but after a bit it was showing signs of lean so I got her out of the water. Plug was dry. So the pop of worked and it's just not enough fuel still.
    GPS speed was 47.9.


    Put in fatter jets. 150H and 130L (didn't have the 125L that I could find). Need to test on water again
    Jerr
    SeaDoo FAQs
    Kawi FAQs

    92 Kawasaki 550SX 89 550PP, 44MM SBN carb, Westcoast exhaust, Mariner head, OceanPro rideplate
    90 Sea-Doo SP Quadra-Fin rideplate, Solas 14x19 prop, Tuned Pipe, 147 RV, Mariner intake manifold , 44MM SBN Carb, K&N performance arrestor, 91 XP hood
    96 Sea-Doo SPX X4 Hull- R&D rideplate, NuJet prop, RAM cup holder, Commercial Tiny Tach
    88 JS550
    pile of parts, but it's all there

    Quote Originally Posted by JetDreams
    your finger is the trigger to success...

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