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2005 vector power loss after 60mph

Discussion in 'RS General Talk' started by 05VectorDV, Feb 14, 2020.


  1. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    i have a 2005 vector that i cant seem to figure out why it wont go over about 60 mph. I've replaced the donuts, cleaned the carbs multiple times, and replaced the drive belt. It was running great up until the donuts went bad. now it doesn't seem to have any power top end. It idles good, and seems to have the power when on a jack stand, but once put under load it wont do much over 60. Does anyone have some insight? or know what might be the issue?
     
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  3. maim

    maim Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    5,443
    Location:
    sudbury on
    Country:
    Canada
    Snowmobile:
    2016 apex xtx/ 2011 apex xtx/ 2009 phaser rtx/x/ 1997 et410t/r
    when where the clutches last cleaned/serviced?
     
  4. Grimm

    Grimm TY 4 Stroke God

    Messages:
    4,983
    Location:
    Ottawa, Ontario
    Country:
    Canada
    Snowmobile:
    2018 MXZ 850, (RIP) 2016 MXZ X 1200
    Torn carb boots?
     
  5. theCATman

    theCATman TY 4 Stroke Master

    Messages:
    1,182
    Location:
    Southern WI
    If it ran fine with bad donuts, then my best internet diagnosis is a partially blocked exhaust from something and now with a sealed exhaust it can't breathe.

    Did you have it stored somewhere that mice could have built an apartment complex in the muffler?
     
  6. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    to my knowledge they have never been serviced.
     
  7. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    Id have to double check that, the carbs have been off so many times i hope i would have noticed if this were the case.
     
  8. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    it ran horribly with the bad doughnut gaskets. im wondering if a fouled plug would make it run this bad? its almost like its only running off two cylinders. And as far as the exhaust goes. there aren't to may places a mouse cant go,so the there is a change,but it seems to be getting a good flow through them.
     
  9. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    would a fouled plug cause this issue?
     
  10. Norse

    Norse Veteran

    Messages:
    45
    Location:
    Troms
    Country:
    Norway
    Snowmobile:
    2013 Arctic Cat M1100 HCR 162"
    Boondocker turbo (sold)

    2016 Yamaha SR Viper MTX 162"
    MCXpress turbo
    Yes that could be the case, so go ahead and check them. Make sure they're the right ones too. How long since last check?
     
  11. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    late last winter/ early spring. It was shortly after that it was stored for the summer.
     
  12. DGZRT

    DGZRT VIP Member VIP Member

    Messages:
    947
    Location:
    Stevens Point Wisconsin
    Country:
    USA
    Snowmobile:
    2009 Vector LTX, 08 Vector shorty, 98 XTC 500 & 600
    Yes , check the carb boots and your air box. Two years ago my daughter went off trail and a branch poked a hole in the air box . It would start and idle fine but I could only go 50 mph . Once I discovered the hole and installed a new box it ran perfect! Check the rest of the things mentioned in other post . But double check the boots and air box
     
  13. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    The engine isn't winding out so, that leads me to believe that its not the clutches... right?
     
  14. DGZRT

    DGZRT VIP Member VIP Member

    Messages:
    947
    Location:
    Stevens Point Wisconsin
    Country:
    USA
    Snowmobile:
    2009 Vector LTX, 08 Vector shorty, 98 XTC 500 & 600
    I have had a broken primary spring and it limited my speed . You can do a visual inspection of both clutches very quickly . Check springs , and secondary clutch buttons , check belt , then support the rear safely and Rev up the motor to make sure clutches are working properly . If air box is installed correctly and carb boots and it still doesn't work then change the plugs and see if that helps. If possible check for spark when changing the plugs . If its none of those then its back to the carbs .
     
  15. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    alright, ill be at the shop all day tomorrow hopefully i can locate the problem. thanks for the help. ill let you guys know how it goes
     
  16. 05VectorDV

    05VectorDV Newbie

    Messages:
    12
    Location:
    new york
    Country:
    USA
    Snowmobile:
    2005 Yamaha vector
    It appears the air box has been repaired with sealant of some sort. There is also some visible around the the carb boots on the air filter side. Is this factory or did the previous owner do this? Also I was able to spray starting fluid around that same area and it made the engine idle go up so clearly it’s getting by, just don’t know if it’s enough to make a significant impact..?
     

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