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More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« on: October 10, 2011, 05:08:03 PM »
Anyone near me (Placentia/Fullerton) know anything about a 2 stroke motor?
It revs super high when the throttle is not pressed, and it dies out until full throttle. Then revs up super high again. I just replaced the starter and now it's doing this. I was told it's a possible air leak, but I'm not sure what that means...
I got some cold beer and possible cash in it for you.


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  • Boat #1: 1989 Howard 21' River Cruiser
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76NORDIC

  • Karma: +23/-0
Re: 2 stroke jet ski question
« Reply #1 on: October 10, 2011, 05:15:10 PM »
I have a 96 Superjet, and my brother a 97 SJ. We both had the early 80's Kawi's also. Don't ever recall the prob you mention, but that don't mean squat. What do ya have and exactly what did ya do, or take apart?   Give me some more clues, or jog my memory 8)
  • Boat #1: 76 Nordic BBF 460 Jet
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More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #2 on: October 10, 2011, 05:26:07 PM »
Ha, recently rebuilt the carb, new starter, primer kit. It's an 89 550. But it think I found the problem... Don't know what that's called, I just know it's on the front side, closest to the tank, and there is suppose to be a plug there.


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More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #3 on: October 10, 2011, 05:27:51 PM »
Jkjking, it's still doing it.


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More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #4 on: October 10, 2011, 05:30:50 PM »
I've never had to mess with it out of the water, is that where I'm suppose to attach the water hose?


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More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #5 on: October 10, 2011, 05:32:37 PM »
Picture edit...


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More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #6 on: October 10, 2011, 06:04:48 PM »
Okay, so I think we have upgraded** to the carb tuning being all out of wack... Work a new starter change that much? I had it out the weekend before Labor day and it ran good, little high on the mid but good. Or is it just being out the water making it that much different?


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« Last Edit: October 10, 2011, 06:28:36 PM by More2LifeThanMPG »
  • Boat #1: 1989 Howard 21' River Cruiser
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76NORDIC

  • Karma: +23/-0
Re: 2 stroke jet ski question
« Reply #7 on: October 10, 2011, 06:55:53 PM »
Oh hell no do not put water in there, that is where you r magneto is :screwy: To me after what you have said you have F'ed up your carb rebuild. The 2 550's we had one was stock and the other I built, and the fricking thing hauled ass!!!!!!!!
  • Boat #1: 76 Nordic BBF 460 Jet
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The definition of insanity: Doing the same thing over and over again, and expecting different results.....Einstein

I refuse to call people an ass anymore. It insults hard working donkeys worldwide!

More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #8 on: October 10, 2011, 07:07:09 PM »
Oh hell no do not put water in there, that is where you r magneto is :screwy: To me after what you have said you have F'ed up your carb rebuild. The 2 550's we had one was stock and the other I built, and the fricking thing hauled ass!!!!!!!!
Yeah, I'm not super mechanical. Just pick up things that I'm told. I learn fast and only have to be shown something once. But with that said, yeah I think I f'ed up the tuning of the carb. I put it back to what it was at before, or at least I thought I did. But the low is good and it doesn't sound weird or bog at full, it's the mid that's all screwy. But even then not bring able to keep it on long without water is hard to figure it out.
Sucks not being able to water test it and play with it...


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BIG JOHNSON

  • Karma: +1/-0
Re: 2 stroke jet ski question
« Reply #9 on: October 10, 2011, 10:47:21 PM »
Sounds lean as hell. Just sold my 96 750sxi.. never had to work on it though..
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76NORDIC

  • Karma: +23/-0
Re: 2 stroke jet ski question
« Reply #10 on: October 11, 2011, 07:29:12 AM »
Buy a water kit. Cheap, easy to install, basically just a hose with a hose end on it. Hook a garden hose on it and run it all day if ya wanted to.
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The definition of insanity: Doing the same thing over and over again, and expecting different results.....Einstein

I refuse to call people an ass anymore. It insults hard working donkeys worldwide!

More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #11 on: October 11, 2011, 01:05:10 PM »
Buy a water kit. Cheap, easy to install, basically just a hose with a hose end on it. Hook a garden hose on it and run it all day if ya wanted to.
One came with the ski when I bought it, just don't know where to hook it up at. Never had to use it or see one used...


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76NORDIC

  • Karma: +23/-0
Re: 2 stroke jet ski question
« Reply #12 on: October 11, 2011, 01:27:15 PM »
We used to use'em before every trip to make sure they were running tits. Last thing I wanted to do at the river or lake was to wrench on em :banghead:  I don't quite remember where they were hooked up on my olde skis. I'll look later this afternoon on the newer ones and see where they are. Should be pretty much the same. Just an added FYI, shouldn't run it too long off the water, you can warp the head pretty easy.
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The definition of insanity: Doing the same thing over and over again, and expecting different results.....Einstein

I refuse to call people an ass anymore. It insults hard working donkeys worldwide!

More2LifeThanMPG

  • Karma: +13/-0
2 stroke jet ski question
« Reply #13 on: October 11, 2011, 05:59:46 PM »
Yeah, that's pretty much why I got the boat I did. Was at Havasu on vacation and saw Kermit on CL looked at it, and got it. Because the the 440 was being a super fical and the 550 smoked the starter... Was just over them. My 650 runs like a champ every time!
And yeah I knew the out of what thing, I was told no more than 15 and now more than 5 times a day.
And thanks for the help!


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