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Thread: Atlanta


  1. #51

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    RE: Atlanta

    I cant figure it out everything is as it should be I can put a few drops of fuel down the carb and it wil run for about 5 sec then quit, likes it not getting any fuel, I took the diaphram houseing loose and it has fuel in it, just act like it starving for fuel. I cant see any fuel when I look down the carb, I took the high speed needle out and fuel does come out there, I have tuned a few motors in my time, but im no expert tosay, but this one has me stumped especially when everything seems right.
    smooth pass

  2. #52

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    RE: Atlanta

    I did replace both bearings and I know the piston sleeve goes in a certain way, which ports goes to the exhaust, im just grabbing straws here
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  3. #53

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    RE: Atlanta

    Is the spray bar clogged?

  4. #54

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    RE: Atlanta

    there is no spray bar
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  5. #55

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    RE: Atlanta

    See it really is broken. I give you 5 dolla for it.

  6. #56
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    RE: Atlanta

    Might be a stupid question but you have the gaskets in the right way so all the small holes line up with the holes in the carb. and pump housing ?


    Don`t worry planes ALWAYS come down

  7. #57

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    RE: Atlanta

    yes gaskets are correct positions
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  8. #58

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    RE: Atlanta

    does anyone know which way the ports on the sleeve goes to the exhaust
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  9. #59

    RE: Atlanta

    Here is a pic, also make sure your piston is in correctly. The notch faces the front of the motor toward the intake/boost port.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Paul Pappas, AMA 42520
    www.NECPO.org

  10. #60

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    RE: Atlanta

    If I place the notch forward the port to the exhaust side you cant see the piston
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  11. #61

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    RE: Atlanta

    the sleeve I have has 4 ports the one you show has 5
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  12. #62

    RE: Atlanta

    You have a YS60 round head correct?
    Paul Pappas, AMA 42520
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  13. #63

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    RE: Atlanta

    yes, the sleeve has 4 ports one large 2 that are opposite but the same size and one port opposite of the largerer port, thats smaller and lower
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  14. #64

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    RE: Atlanta

    So im assumeing the bigger port is the exhaust port
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  15. #65

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    RE: Atlanta

    YS 60 FR is stamped on the case
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  16. #66

    RE: Atlanta

    Okay, that one large port I assume is the Boost port then,should face forward in the case. The one opposite the large port that’s smaller is the exhaust port.

    >>

    An original untouched YS 60 sleeve has a 2 port exhaust. I wonder if you have a modified sleeve or aftermarket in this engine.

    >>

    Hey How about a pic?

    Paul Pappas, AMA 42520
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  17. #67

    RE: Atlanta

    The big port "Boost" looks like this?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Ay74488.jpg 
Views:	3 
Size:	93.8 KB 
ID:	1813003  
    Paul Pappas, AMA 42520
    www.NECPO.org

  18. #68

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    RE: Atlanta

    I dont know it could be, ok when the smaller port is on the exhaust side it cover up the opening when you look down inside the engine you cant see the piston
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  19. #69

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    RE: Atlanta

    Thats not the same sleeve I have mine has only 4 ports
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  20. #70

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    RE: Atlanta

    theres no way thats could be the boost port if I turn that port towards the exhaust it covers up everything you cant see the piston
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  21. #71

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    RE: Atlanta

    this sleeve doesnt have a 2 port exhaust
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  22. #72

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    RE: Atlanta

    this best I can get it to do is idle for about 10 secs and that when I put fuel down the carb, try and go full power it sputters then stops, and I can see fuel in the fuel line, when its idleing
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  23. #73

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    RE: Atlanta

    Im am open to suggestions to all YS gurus
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  24. #74

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    RE: Atlanta

    Had a friend pick up a YS 60 some time ago from a person that had been rebuilt with new bearings, diaphragm and plunger. When I received engine from him to see if I could figure out why it would not run at all. The problem ended up being the plunger. The YS 45 and 60 share the same diaphragm, but the plunger for the 45 uses a different length rod then the 60 does. You can still get the diaphragm from YS along with the 45 size plunger..... BUT..... one has to reuse the rod by taking off the new plunger head (silicone part) and put it on the existing rod. Going off memory here..... the 60 uses a long rod on the plunger then the 45 does. I do not have the measurement of the 2 rods to give you. But someone here should be able to get you that.




  25. #75

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    RE: Atlanta

    the plunger and rod seems in good shape not sure what a new one would do
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