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Flipper Tiffany Roper Jones

Polaris 500 sportsman give it gas stalls

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All I have been through everything. Bought brand new.

Throttle safety switch 

Cam and rockers

ECM

Carborator

Stator

Fuel safety switch 

Battery

Everything every forum has spoken of I've bought sealed airbox completely tight unplugged black wire on trans. I have literally done everything in the book.Checked oil today full of gas anyone no anything what might b wrong. Next I'm taking head off and making sure valves seat any ideas.

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A leaking valve isn't going to fill the oil with gas. Plus you can check valve leakage with a leak down test with the head on.

I would be looking at the carb. The needle and seat is not working right and I bet the seat of the needle is leaking. I posted about this problem recently on here in the Polaris forum. Booth units I had that problem with were Polaris 500's.

Be sure to pull the oil drain plug on the bottom side of the crankcase to drain the oil from the crank case. Just draining the oil from the bottom plug of the oil tank will not empty the crank case that is full of fuel.

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No it starts and idles perfect but when you give it gas it starts backfiring through the card horribly bad and it takes it forever to start keep turning it over it will pop a few times then it will eventually start and idle smooth as rain until you hit the gas replaced everything you can think of still same thing and its perfectly in time I don't understand it how can you do bleed off to check the valves with a compression tester

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No that's the only test I haven't done yet been reading all the forums so figured that stuff was what was wrong its doing same exact thing so didn't put much thought I have checked time and its smack dab on so I'm stuck besides compression check and make sure valves are seated. I have a top end gasket kit just blows my mind cause any other 44-wheeler main jet or sec jet is clogged I went over this one with a tooth brush so not sure where I went wrong 

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I’m sure your pretty much stumped with this but there are really only a few ways fuel can get into your crank case.  

Stay positive, do a compression test and see what it looks like.  

Go from there. 

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