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  1. #1
    Pwgsx's Avatar
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    1050 SLTX Engine Troubles

    I am trying to fix a 1050 ski for a friend - long story short, he didnt know what he was buying and got taken. He said it ran fine for one day and hewent out today and it ran like crap. As of now, the ski starts but runs very rough at idle, rev it up and it runs but you can hear its not healthy. Checked the plugs and 2 are fine, the other ( closest to the rear of the ski) is black and very wet. I will do a compression test in the morning but thinking its either a very rich carb Or a blown piston with no compression.

    I have worked on many sea doo's and yama and kawi stand up skis but this will be my first Polaris. Any thoughts or ideas would be great.

    thanks


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Check the cyl for spark.

  3. #3
    Pwgsx's Avatar
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    it does have spark

  4. #4
    Pwgsx's Avatar
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    Got it torn down last night, one piston is totally trashed. Ill have to post a pic later today. It looks melted and pitted. Im going to say no oil or carb leaned out?? I will def. suggest he run premix.

  5. #5
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    Meltedv piston generally is a lean burndown. Polaris skis rarely have oiling issues, mostly due to old lines breaking or falling off. Replace all the oil lines and there is no need for premix

  6. #6
    Pwgsx's Avatar
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    here is the pic of the piston, all oil lines seem to be there and not cracked.Click image for larger version. 

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  7. #7
    There is no wash on the piston so the cylinder is running lean. I would check the impulse line to the rear PTO Carb to see that there is no fluid in it and rebuild the carbs. The Mag carb has it own impulse line and both Mag and PTO carbs supplies gas to the center carb. How does the center piston look?

  8. #8
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    Make sure the rear crank seal is ok and not leaking. If its leaking air there it will lean out a cylinder.

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