Question about Polaris ATV
I have a 2003 sportsman 500 ho thats doing the same thing. It starts fine everytime and idles fine but when you push the throttle it stalls and sounds like its loading up with fuel. Also its fouling the plugs when it does this b/c I can take them out and they are jet black (dry). I checked the spark and the spark appears to be good. So now I'm in the process of taking the carb apart to see if there is anything wrong with it and to clean it. If this doesn't fix it then I don't know. I really don't want to replace the coil b/c its like 150 bucks.
Posted on Feb 16, 2010
I have a 2006 Sportstman 500HO ATV, EFI. Sometimes it will run 100% correct, other times it will start, idle fine but then when giving it throttle will will start to surge almost like it's hitting a rev limited. Sometimes it will backfire and stall. I already replaced fuel filter, flushed the fuel lines and gave it fresh gas and installed a new spark plug, but no good. I also checked the throttle switch and it's not making contact to stall it. I download the service manaul and tested each sensor and they tested fine which is probablt why I get no check engine light.
This ATV is mainly used to plow snow in my driveway, no salt. It's used around my property but very lightly. It's still as clean as it was when I bought it and it doesn't have but about 40 hours on it.
Polaris 500 HO EFI 4x4 ATV: Vin# 4XAMH50A56B707664 purchased 6-8-2006
Posted on Jul 15, 2010
Downloaded this last week....its the factory service manual ($3.99)
Posted on Aug 10, 2010
follow ur throttle cable down to cars there should be a plastic screw close to cable to adjust idea but with polaris that screw can be hard to find with all the plasticc they put in way but if u can see carbs easy enough u will see the idle screw
Posted on Feb 11, 2014
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