Question about 2008 Gas Gas SM 515 FSR

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Fule system I own a F5 Arctic cat. I need ideas what may be the problem. If I put fule down to my plugs the machine runs. I have fule going to the carb but won't fire. I have spark, and compression help please

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Try taking the carbs off, removing the fuel bowl and taking out the pilot jet. Its a smaller jet right in front of the main jet, you may need to grind a screwdriver down to get to it unless you have a very small one. Chances are your pilots are plugged. Same thing was wrong with my 99 Z440 both pilots were gummed up. Good luck!

Posted on Dec 30, 2009

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Hi and welcome to FixYa,

I am not familiar with Arctic Cats. However, with your indulgence, may I share a few ideas:

  • if wetting the plugs with fuel would make the engine run, then fuel is not drawn into the combustion chamber. This may be cause by poor vacuum at the intake side;
  • clogged/blocked jets;
  • if the engine is a two stroke, there may be oil in the combustion chamber or too much in the bowl of the carb;
  • you may want to also drain the carbs;
  • check for presence of contaminants in the fuel specially water.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Dec 01, 2008

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Posted on Jan 02, 2017

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