2000 polaris 500 no start cold

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m10rider

New member
Sled ran fine last year drained carbs .went to start just spins over with full choke applied pull plugs dry !! put fuel in holes plugs back in fires right up runs great rest of day ! next day no start same thing. took carbs of cleaned they looked like new inside still went though them took fuel pump off took apart looked great in side to put all back to gather check fuel flow spun over motor great flow from pump hooked up lines tried to start just spun over put hand over carbs fired right up runs good check intake boots they are fine adjusted choke cable also once motor runs it will start every time let set over
night will not start unless you put fuel in spark plug holes !! WHAT DID I MISS ???
 
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euphoric1

Well-known member
compression check? issue with secondary compression? if you hold hand over carb while pulling rope will the engine draw fuel into it?
 
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euphoric1

Well-known member
did you puddle a little fuel in the front of the carburetor and will the engine draw it in? is the fuel in the tank fresh? by secondary compression Im referring to back side of piston, seals, wear around intake/transfer ports, that's what I mean if engine is actually drawing fuel in to the engine? enough draw to start the engine? does it idle fine? maybe even though carbs appear to be clean you have a restriction in the pilot or choke circuit where it just isn't getting enough to start but would think you would see an issue in the idle of the sled if that was true.
 
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m10rider

New member
I will try that and see ? Think I will take apart carbs and check them again also. Thanks for the Help !! Will keep you all posted what I fine
 
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euphoric1

Well-known member
would suggest a problem in either the choke (either in cables, plungers, adjustment, passages) or in pilot circuit of carburetor to me.
 
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polarismike

Member
Well if the choke plungers are moving and adjusted correctly but there is no change when applying the choke, I would say there is still a blockage or debris of some sort inside carb. Make sure to spray carb cleaner through all passages and then follow up with compressed air. Using carb spray will show you that there is flow through the passages.
 
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m10rider

New member
Cleaned both carbs today !! And adjusted choke cables 3/16" play and it started wright up let warm up pull choke out and motor runs rich and will die did not see anything when i pulled apart ! Cleaned all passage ways with carb clean and air gun, runs good now . Thank you for all the help guys
 
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euphoric1

Well-known member
m10rider, glad to hear everything working good! looks clean doesn't always mean clean, in the past when I had carbureted sleds the carbs were torn down every fall regardless of how the machine ran the year prior, fuels are not what they used to be, warm months storage is the hardest on fuels treated or not and restricted or clogged passages in ideal circumstances can take out an engine if left unchecked. My theory... a little bit of maintainence goes a very long way and I would rather be riding them, not fixing them. Good to hear all is good!
 
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hudson056

Member
My brother had to clean the carbs 3 different times this year before his ran right, but he hadnt had a fuel pickup line for the last couple years, then finally he put one in at the end of last year, I dont know if that affected his or not because it has a filter on the end of the line... Im just sayin it took 3 times before it ran right.
 
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