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yahama big bear 300 gas mixing with engine oil

duckhunterdave30

By duckhunterdave30
in Yamaha ATV Forum

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mywifeknowseverythin Grand Master

mywifeknowseverythin

Posted
Posted

If the fuel is gravity feed, the carb may appear to have a good needle and seat, yet it may not be closing fully. It's also possible the needle and or seat are damage or blocked do to debris in the carbs fuel bowl.

Also,,,,Be sure to turn you fuel off every time you shut your bike down......Also check your Float....

SunLrider Mentor

SunLrider

Posted
Posted
If the fuel is gravity feed, the carb may appear to have a good needle and seat, yet it may not be closing fully. It's also possible the needle and or seat are damage or blocked do to debris in the carbs fuel bowl.

Also,,,,Be sure to turn you fuel off every time you shut your bike down......Also check your Float....

i would go with the carb not closing fully

  • 2 weeks later...
  • 3 weeks later...
duckhunterdave30 Newbie

duckhunterdave30

Posted
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Found the two problems. gas valve was not working right letting gas by. then the needle was not setting to keep it from going through carb and it to piston. just sitting there with that pressure was letting it pass by rings. it is all fixed now and running good.

mywifeknowseverythin Grand Master

mywifeknowseverythin

Posted
Posted
If the fuel is gravity feed, the carb may appear to have a good needle and seat, yet it may not be closing fully. It's also possible the needle and or seat are damage or blocked do to debris in the carbs fuel bowl.

Also,,,,Be sure to turn you fuel off every time you shut your bike down......Also check your Float....

Glad I could help:laugh:

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