500m running rough??

2008 High Lifter Edition Polaris Sportsman 800HO

500m running rough??

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500m running rough?? - 7/24/2008 9:01:25 PM

Alabama90

Posts: 170
Joined: 8/24/2006
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Ok so i cranked up my 500m yesterday for the first time in 2 weeks and it cranked up perfect as usual and ran fine until i started drivng down the street. It wierd you can rev it out in neutral and it will run fine and it will run through first gear fine but as soon as you get into 2nd gear and up and give it about 1/3 to 1/2 throttle it will start missing bad and try to die almost like the jetting is off.. but when its missing and you goose it, it will just wake up and romp without missing or anything?? And if you run throgh the gears like wide open it wont miss at all?? By the way it ran fine when i put it up any ideas? I put some sea foam in the gas thinking maybe it got some condensation in it but it didnt effect it.. Thanks for any imput

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2006 Polaris 800
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RE: 500m running rough?? - 7/24/2008 9:05:52 PM

BrokenKitty

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Joined: 6/9/2007
From: martha's vinyard,mass
Status: offline

My guess is bad gas ??? Anyone else ?

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07 650 h-1
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- axle spacers
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RE: 500m running rough?? - 7/24/2008 9:20:27 PM

MudCrawler

Posts: 1722
Joined: 1/31/2006
From: Long Beach, MS/ Hattiesburg, Ms
Status: offline

check the sparkplug and clean the carb

oh also check the oil make sure gas didn't get in there.

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2003 Arctic Cat 500m
28 12 12 outlaws all 4 corners
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The Back Up Bike
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RE: 500m running rough?? - 7/25/2008 1:43:40 AM

Super Cat

Posts: 187
Joined: 3/4/2008
From: Jacksonville, Arkansas
Status: offline

i think gwc said in one thread that if its wot then its your main jet and if its 1/4 to 1/2 then its your pilot and idle is the other. its been awhile since i saw that thread but i believe its right. so i would guess its your pilot jet has a piece of dirt in it.

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2006 AC 500 Auto
2" HL kit
EPI Clutch springs
secondary mod
lightend rollers
warn 2500lb winch
28" mudlites
12" SS 108 black
2" full snorkle
Dynojet kit
Speedwerx pipe
K&N filter
slide modded
clipped

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Post #: 4

RE: 500m running rough?? - 7/25/2008 6:40:19 AM

Alabama90

Posts: 170
Joined: 8/24/2006
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OK thanks alot for the help yall. I think im just gonna take the carb apart tommorow and clean it out good.

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2006 Polaris 800
Belt Snorkled
6" **** lift
29.5 Laws
Itp Wheels
Otter Box
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"Team Swamp Donkey"

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RE: 500m running rough?? - 7/25/2008 7:26:08 AM

MTImodquad

Posts: 518
Joined: 4/4/2007
From: Canandaigua, NY
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Yeah I had the same problem...I took my carb apart and it was nasty. A good cleaning should take care of it.

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06 Arctic Cat 500m
4-6" Adjustable MUDTECHinc lift
31" Outlaws
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MTI High Flow Snorkel
2007 AC Prowler XT
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Post #: 6

RE: 500m running rough?? - 7/25/2008 7:30:52 AM

JGOFF3

Posts: 255
Joined: 7/20/2006
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I had the same problem on my 500, if you plugged the line coming from the bottom of the carb, try removing the plug and see if that helps. Made mine run like a champ put it back it and haven't had the problem since. Just a suggestion.

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RE: 500m running rough?? - 7/25/2008 5:01:11 PM

Alabama90

Posts: 170
Joined: 8/24/2006
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Thanks guys. But yea JGOFF i had that happen one time too and it was because the carb breather on top wich is run to up my snorkel was clogged but i might check it again just to make sure. Its just aggrivating that it just started doing it from sitting up for tow weeks.. i guess i just need to ride more haha

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2006 Polaris 800
Belt Snorkled
6" **** lift
29.5 Laws
Itp Wheels
Otter Box
Audio Pipe

"Team Swamp Donkey"

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RE: 500m running rough?? - 7/28/2008 6:30:07 PM

Alabama90

Posts: 170
Joined: 8/24/2006
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Ok so i took the bowl off the carb and took all the jets out execept the pilot jet which i could not get out with the screw driver i had.. its really in there.. but anyways i cleaned out the bowl and all that and the other jets looked fine and there really wasent much in the bowl at all.. so i put it back together still aggrivated lol.. when i cranked it up it ran perfect.. dont really know what i did.. so the next morning i crank it back up and it is doing the same thing AGAIN! I drove it all day with it like that and it was really anoyying but i made due.. anyone got any more suggestions other than taking the carb back apart and getting that pilot jet out?

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2006 Polaris 800
Belt Snorkled
6" **** lift
29.5 Laws
Itp Wheels
Otter Box
Audio Pipe

"Team Swamp Donkey"

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Post #: 9

RE: 500m running rough?? - 7/28/2008 9:12:15 PM

GWC

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From: Kansas
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I just had one the other day that would run fine up to 1/2 throttle after that it wouls spit and studder.
Take the carb clean off the bike strip it down to just the block and soak it down with carb clean and blow out all the passage way with air then put it back together. at this point if you have not done the slide mod do it while your there.

i really think its got bad gas/ varniss (sp) in the passages and is stopping it from getting fuel at 3/4 to WOT . i di dthat to this one and it ran like a champ after that.

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RE: 500m running rough?? - 7/28/2008 11:10:17 PM

Alabama90

Posts: 170
Joined: 8/24/2006
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Ok thanks alot GWC thats what i will do and i will let yall know how it goes

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2006 Polaris 800
Belt Snorkled
6" **** lift
29.5 Laws
Itp Wheels
Otter Box
Audio Pipe

"Team Swamp Donkey"

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Post #: 11