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Author Topic: Help! Atv broke down in the woods  (Read 1669 times)

Online johnbmyersii

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Help! Atv broke down in the woods
« on: August 19, 2022, 10:15:18 AM »
Wondering if I can get some help: I have a 2016 polaris sportsman 570 and it broke down in the woods last night. All of a sudden it lost power, wouldn't RPM, sputtered backfired and died. Would hardly restart and would die after going into gear. No check engine light either. Today I checked the intake sensors and none look dirty, has fuel to the injector and the injector is clean, next step check spark plug.

Today it starts and drives but sputters and backfires bad. Will RPM but does so slowly. Feels like it's an ignition problem but hopefully someone here can give some advice.

Offline Sitka_Blacktail

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Re: Help! Atv broke down in the woods
« Reply #1 on: August 19, 2022, 10:38:21 AM »
Water in the gas?
A man who fears suffering is already suffering from what he fears. ~ Michel de Montaigne

Offline deereman

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Re: Help! Atv broke down in the woods
« Reply #2 on: August 19, 2022, 11:00:21 AM »
Timing Chain might have jumped a tooth? WAG

Offline trophyhunt

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Re: Help! Atv broke down in the woods
« Reply #3 on: August 19, 2022, 12:15:44 PM »
I've pulled my buddies polaris out of the woods a couple times with my yamaha..... sorry.
“In common with”..... not so much!!

Offline KFhunter

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Re: Help! Atv broke down in the woods
« Reply #4 on: August 19, 2022, 12:25:00 PM »
For clarification are you needing assistance in recovering the ATV, or are you wanting diagnostic advice?

If the former, please provide a general location.

Good luck!

Offline Turdle

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Re: Help! Atv broke down in the woods
« Reply #5 on: August 19, 2022, 12:55:10 PM »
Vacuum leak ??

Offline andersonjk4

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Re: Help! Atv broke down in the woods
« Reply #6 on: August 19, 2022, 02:17:07 PM »
Fouled spark plugs possibly.  Very similar thing happened to my Yamaha Grizzly several years ago.  Put in new plugs and everything ran fine. 

Online johnbmyersii

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Re: Help! Atv broke down in the woods
« Reply #7 on: August 19, 2022, 02:32:22 PM »
Thaks for the replies. I was able to get it towed out first thing this morning from a buddy. Spark plug came back and looked good. Checked spark and it had it. Thinking it's the fuel pump not pumping enough.

Online johnbmyersii

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Re: Help! Atv broke down in the woods
« Reply #8 on: August 19, 2022, 02:39:14 PM »
I've pulled my buddies polaris out of the woods a couple times with my yamaha..... sorry.

If you're not going to be helpful please just keep to yourself and move on

Offline KFhunter

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Re: Help! Atv broke down in the woods
« Reply #9 on: August 19, 2022, 03:02:12 PM »
 :tup:

Offline Mudman

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Re: Help! Atv broke down in the woods
« Reply #10 on: August 19, 2022, 03:40:22 PM »
Electronic Ign or fuel pump would be my est.  Fuel vacuum bad gas cap?  Will it start with gas cap off?  We had similar problems with both pump and ign module on older atvs before.  Spark plug problems were usually not revving high but not stalls.  Good luck.  Also dont trust "look" of plugs.  Can be bad still.
MAGA!  Again..

Offline buckfvr

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Re: Help! Atv broke down in the woods
« Reply #11 on: August 19, 2022, 03:41:25 PM »
If so equipped, could be a fuel pressure regulator.

Offline Westside88

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Re: Help! Atv broke down in the woods
« Reply #12 on: August 19, 2022, 03:49:21 PM »
Does it have an external fuel filter? I had a crack in one on riding mower once that acted like that

Offline outdooraddict

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Re: Help! Atv broke down in the woods
« Reply #13 on: September 15, 2022, 07:53:40 AM »
i dont remember what it is called, the power module or something like that. its basically a circuit board that controls the power, my step dad used his in Moab. all worked fine, took it home and no power.  maybe this isn't your problem due to being able to turn it over, but there was a range of Polaris quads that this is a major and common issue, and its not a cheap fix

Offline birdshooter1189

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Re: Help! Atv broke down in the woods
« Reply #14 on: September 15, 2022, 08:04:20 AM »
Backfiring and sputtering indicates it's running too lean and not getting enough fuel.  I second all the advice given about checking components involved with providing fuel to the cylinder.

 


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