Runs for hours then dies - Polaris ATV Forum
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post #1 of 4 (permalink) Old 05-08-2017, 10:43 AM Thread Starter
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Runs for hours then dies

Hey everyone, I have this problem with my 2005 Polaris sportsman 800 twin efi. I can go out hard for a few hours then just out of the blue it seems like it's starving for fuel. It sounds like the gas is boiling lol . I let it sit for an hour and it runs fine till it seems like it gets hot . Any idea? I'm at my wits end. Every time I think I have it fixed it does it again.??? If you need any more info I'll be happy to let you know. Thanks
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post #2 of 4 (permalink) Old 05-08-2017, 11:26 AM
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Maybe check for any blocks/kinks in muffler. Would run good until too much back pressure? That or check the fuel lines would be a good start. Any idea if it still has spark after it dies? Could also try running with your gas cap loosened, I've heard of some people having issues with that.

Edit: The guys under me are right. That makes way more sense than my stuff.

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Old: 2004.5 Polaris Sportsman 500 HO - Blue

Last edited by Stampede; 05-09-2017 at 06:20 AM.
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post #3 of 4 (permalink) Old 05-08-2017, 07:28 PM
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Your fuel pump is getting hot. If you were to top it off with fuel when it dies, I bet it would fire right back up. The more gas you have in the tank, the cooler your fuel pump will stay. Check to make sure the reflective heat shield is still on the bottom side of your fuel tank as well. There is a tremendous amount of heat coming off of the headers, which are right underneath the gas tank. Might need to start shopping for a new fuel pump. The older they get, the more the heat affects them.
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post #4 of 4 (permalink) Old 05-09-2017, 03:35 AM
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Quote:
Originally Posted by bobx2 View Post
Your fuel pump is getting hot. If you were to top it off with fuel when it dies, I bet it would fire right back up. The more gas you have in the tank, the cooler your fuel pump will stay. Check to make sure the reflective heat shield is still on the bottom side of your fuel tank as well. There is a tremendous amount of heat coming off of the headers, which are right underneath the gas tank. Might need to start shopping for a new fuel pump. The older they get, the more the heat affects them.
This Right Here ^^^ What He Said!!!

And your gas probably is boiling.....

Matthew "MustBeNice"

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