Solution. when the rpms are at 3000 rps suddenly goes to 2000 and then die. not sure if you got your intake boot or not yet but if its cracked it will cause it to backfire alot. This MY was prone to 'soft' cams that wear down prematurely - could have Sep 11, 2010 · 19 posts · Joined 2010. I blew out the factory air cleaner, and as i said, i changed the plugs twice. #4 · Jun 17, 2012. E) Changed spark plug. #1 · May 26, 2011. ODI Rogue 130mm grips. 4 posts · Joined 2012. I just replaced the clutch/bearing part under the flywheel. And the only fix is to remove the whole system and clean and dry May 18, 2021 · The Polaris Sportsman 550 is a sport-utility quad from Polaris’ best-selling ATV lineup. approx after 30 minutes of Jul 27, 2005 · ryde or die 2004 polaris predator; predator billet bar clamp, trail tech 1 1/8 x-bars, k&n clamp on filter with pre-charger, harri's predator grips, moose polished master cylinder cover, custom built front bumper, and heel guards, pure polaris black fenders, pro armor cooler rack, yoshimura stainless steel head pipe and bub racing muffler, dynojet jet kit, rebuid with hotcams and 12. Injector- ok. Original plug. I can let go of the throttle and it'll settle back to idling. After a recent ride I gave it a quick bath and cleaned the air filter. If they said there was an ethanol issue it would mean that the fuel isn't actually bad but that there's a moisture problem that interacted with the ethanol causing it to gel and very well could be why it won't start. SOURCE: What could cause a 2010 Polaris 550 efi to start sputtering, backfiring and going dead after a few minutes of running. COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights Mar 29, 2022 · 21523 posts · Joined 2016. I thought you had this fixed a few weeks ago. So i drive my quad at least 2-3 times a month. clearcreek49 Discussion starter. Was riding one day and it just shut down on me. Most all of them will stop doing it sometime in the first 20 hours or so. I have a Polaris 500 HO sportsman 4X4. Apr 30, 2022 · 2006 sportsman 500 efi won’t start. Oct 6, 2015 · 7461 posts · Joined 2013. It only needs a small amount of fuel to start, but as more fuel is called for, fuel pressure will drop and the engine starves for fuel - backfire through the intake is a classic indication of a lean condition. Posted on Oct 09, 2015. Dec 3, 2021 · I have a 2021 Sportsman 570 I purchased new. 1. I think they all (850's) backfire during break in. 1893 posts · Joined 2013. While descending a mountain I noticed the quad got quiet (I thought it was going to stall out) but once I got to the bottom and revved it, it would idle at a higher RPM than normal. at the begining i had this problem only when the machine was warm. The the clicking noise if by the battery is the solenoid. i did 3 things,tighten the nuts on the exhaust pipes at the motor and i went fron 87 octane to 93 octane and adjusted the throttle cable gap to 2. -freshly rebuilt top end. I normally enjoy fixing things but this is my 1st ATV and the closest polaris dealership is not only an hour away Nov 23, 2012 · In the front, the suspension offers an impressive 9 inches of wheel travel, while at the rear, the 550 has 10. I Rode About 20 More Mins And When I Stopped, It Shut Off Again And Would Not Start Back Up. . At one point my sportsman sat around for about 2 yrs. Electronic Power Steering. 550xp Sportsman Xbow Gripper mount ~DOWN&DIRTY~ Apr 24, 2014 · Good Morning Polaris Fans, New to the forum and seem like a great place for helpful info. 02 Backfire. 26 x 8-14; Maxxis M9805. 99. Aug 25, 2019 · bp405. Seems to run alright at higher RPM until you let off any help wound be great Thanks mike. Remove the (4) screws and cover from the RH control. Hi all, I’ve recently acquired a 2011 Sportsman EFI that after running it at high revs for 3+ miles, if you run it at low revs or let it idle it’ll splutter and die with a big backfire and potentially not start for 5-10 minutes till it’s a bit cooler. 21347 posts · Joined 2016. She could not get the machine to run over about 3000 rpm before it started to pop, sputter and backfire. That is, until it dies. Nov 17, 2013 · 2012 polaris 500 HO *Backfires at Top speed when letting off throttle 2012 550 Sportsman XP EPS Magnetic Metallic Polaris 2500 winch Jul 16, 2012 · bobx2. Was running perfectly before the starter fix but had been sitting for months. Spark-ok. Apr 19, 2016 · 1) insure the throttle plate snaps all the way closed when you let go of the lever. When I first start it, it spits and sputters and sometimes backfires. Idles perfect accelerates excellent, perfect. And still have all this I still have intermittent stalling, rough idle. The only thing found was a couple loose wires within the ECM plug harness. 2010 Sportsman 500 HO - 1417 miles 189hrs. I did and checked out fine with a meter. View our entire inventory of New Or Used Polaris Four Wheelers. Slide the boot back far enough to expose the inline cable. Like the thread title says, on occassion my Sportsman 500 will sputter and nearly stall out when I climb hills. Feb 19, 2014 · 1. It was in the barn at my buddys farm, and he has fainting goats- two went down! That took away from the worry of why-. Shut it off. pump , tank vent, filters , fuel line blockage. it idles fine, too. I feel I have an intermittent lean fuel condition. You have some good info you're passing on. I can get it to rev pretty good in neutral by squeezing the throttle down slowly after tearing down and Aug 3, 2014 · The '05 Sportsman was almost empty and took almost a full tank. at Polaris. #1 · Dec 6, 2013. Nov 16, 2020 · More I ride around the house the worse it got now backfires really bad/loud and dies after decel. turn key on and off 3 times leaving it in the on position on the third. So I replaced that. 2005 Sportsman 700 EFI, 28" outlaws, 2" lift, highlifter springs, gorilla axles, headlight mod, reverse rev limit mod, fully snorkeled. It has a little over 100 miles on it and has no other problems. Tried to start and acted like battery was weak. Polaris 2500 winch. . - Take the bike out of the garage (using tonight as an example), park it in front to close the garage door. Had to replace the power distribution module at abt 50 hours. Mar 24, 2014 · 2007 EFI Sportman 500 won't start. winch with 3/16" Amsteel rope by Atv Winch Rope, 25' Amsteel tow rope by Atv Winch Rope, RDC fairlead, RDC deluxe gas cap, RDC shifter, RDC overflow bottle cap, RDC 2" lift , 27" Maxxis bighorns s/w on Vision Outback 12" wheels, Uni air filter, Dalton o/bl primary clutch spring, front and rear brushguard, front and Aug 1, 2013 · Also, taking the air out of the line means your machine will start back up and get you further down the road. Tamarack 10" Footpegs. I have changed the CDI, Fuel filter, Throttle body with the MAP, and TPS. Jan 21, 2024 · Noise and vibration irregularities are also common problems encountered by Polaris Sportsman 500 owners. Very hard to restart once it dies. J. Jan 30, 2011 · 3 posts · Joined 2011. My 2006 500 H. your display will read wait for a few seconds and then numbers will show up if there is a problem. Please Help!! Problem: 2006 Sportsman 700 Twin EFI significantly lacks power at any RPM (full throttle was netting about 5 mph). 26 x 11-14; Maxxis M9806. 1,037. #2 · Sep 4, 2014. When full throttle, it goes fine. inspect the plug. Possible Cause. When we started trail riding the next day, we notice problems right away. This is not constant, it will be running good and then pop once or twice and Jul 14, 2010 · run ecu diagnostics. O. Too many scooters to mention so lets go with the rare ones I need to kick myself for parting with. Jul 18, 2022 · 2011 Sportsman 550 EFI Dying and Not Starting When Hot. The first thing I noticed is the front donut gasket was blown out. May 28, 2023 · 2022 sportsman 570 ultimate trail issue. Jun 9, 2023 · 2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU. See full list on offroadrange. #1 · Jul 17, 2012. 2009 Sportsman XP 850 EPS. #8 · Dec 2, 2022. Rear Tires. Mine: 2018 Sportsman 850SP - 26" Bear Claw HTRs on OEM steel wheels (I really don't like the Aluminum ones) Polaris Hand warmers, Mirrors. Smithers, B. I have a 2015 Polaris sportsman 850 with low miles that starts and idles fine but spits, sputters, and backfires if you don’t let it idle for about 10 minutes. 353. Apr 22, 2022 · 2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU. It idles fine but when you start driving it it falls on its face and starts backfiring and popping then it will start moving again and then start backfiring again. It starts right up and runs great under acceleration, but pops and backfires when decelerating. So next step is to test if power is on both "big" wires coming off the solenoid when the key is in the start position. It acts as if it runs out of gas, OR the spark fails. Changed air filter and spark plugs but no change. Garage is likely not evenly heated, so bike could be 0. So here is a question for you, my 2009 Sportsman has a serious idle problem and a backfire issue. Sep 4, 2011 · Hi all: I have a 2002 Magnum 500 RMK. When warming up the RPMs are all over the place from almost nothing to a little high, and then almost always backfires during deceleration. New gas, running high test ethanol free gas. Jul 10, 2014 · 08 Sportsman 800 Touring- EPI clutch turning 27" Mega Mayhems, 2500lb Polaris winch, front & rear SATV brush guards, front rack extender, 3 headlight Mod, Quadovator temp gauge, RAC Engineering reverse/ work lights, EBC brakes, Triangle ATV Stealth Snorkels, RDC radiator relocation kit, ATVtrailtunes split tube system, 12" Totron LED lightbar. XP Lock and Ride Front Cargo Box. #6 · Jul 17, 2012. I have a 1998 sportsman 500 which has been running flawlessly. Feb 12, 2015 · But ultimately a little throttle keeps it going, then it will idle. It’s now sputtering around 5,000 rpm and backfiring constantly til I get off the gas. & pizzed 2009 RZRs, sold. What it all adds up to is the Sportsman 550 is an absolute joy to ride in tighter, rougher situations. Show LO on dash so I replaced the battery. Find specifications for the 2014 Polaris SPORTSMAN 550 EPS POLARIS PURSUIT CAMO such as engine, drivetrain, dimensions, brakes, tires, wheels, payload capacity and cargo system. adjuster sleeve and loosen the adjuster locknut. Replaced plug and put fresh non ethanol gas. Sometimes the machine did not want to idle at all. The last time I went to start it, it wouldnt hardly start, and when it did, it sputtered really bad when running. Just 2 Days Ago I Put an HMF XL Slip On Exhaust On It And I Rode For 10 Mins And It Shut Off Twice. Share. AtvTrader. Had just enough to crawl. No diagnostic on startup. I replaced the plug, disconnected the neg side of the battery for twenty minutes and then started the machine. It runs great. then no start, followed with an exhaust backfire after about 3 seconds cranking. Unusual sounds like clunking, grinding, or whining during operation can signify potential mechanical issues within the ATV’s components. I did replace the spark plug, no help. Jun 16, 2012 · C. Browse Polaris SPORTSMAN 550 Four Wheelers for sale on AtvTrader. May 10, 2023 · Working on a 2009 Polaris Sportsman 550 XP today that came in with some bad sounds and lurching forward in gear. JH73 Discussion starter. kept turning over, so i got Feb 21, 2018 · 3 posts · Joined 2018. Meaning that the engine is receiving less fuel than it requires Oct 25, 2011 · Con:racer: 2007 Sportsman 800 efi , L&R tall windshield, Viper Max 4000 lb. It doesn't happen all the time, but when it does it is always when climbing. 3. Backfired and loss of power again for very short time, then all good again. Earlier this month i tried starting it , usually it will start as soon as i turn the key but it took a bit for it to start after giving a bit of gas. 2011 Sportsman® 800 EFI. Feb 16, 2014 · I have a 2010 Sportsman 550 XP that this winter started giving me problems starting when the engine is cold. 2 hours and 4439 miles, I’m having an issue with the atv bogging and backing firing sometimes when letting off the throttle after holding it at 3/4-full throttle for a short time cruising down back roads so it’s not really under much load, it only bogs and back fires for May 26, 2011 · 13 posts · Joined 2011. I would replace the plugs and check the air filter also try an improved fuel a couple of tanks to insure good fuel is through the system. May 25, 2021 · Backfiring & loss of power. 5 posts · Joined 2020. Tried giving it throttle to start and wanted to sputter and not start. Welcome to the forum. You should be able to free it up by taking the valve cover off and getting some oil in the cylinder and Exhaust port. 2) Eliminate a binding throttle cable or any sticking of movement on closing. 1: Important Warning About This Manual Feb 1, 2019 · 2013 sportsman backfiring help!! So this is a polaris 2013 sportsman 800 efi, it started out running on one cylinder, we performed a compression test, 180 psi on pto side, 30 psi on mag side, so we disassembled the engine and found camshaft to be worn off and 2 lifters to be totally collapsed, but the crankshaft and connecting rods were in Jan 10, 2021 · 2K views 1 reply 2 participants last post by FPD218 Jan 10, 2021. Incorrect spark plug gap or heat range. I shot some starting fluid in and it will give a little flame out of butterfly. I picked up an 06 500 efi Sportsman. Sep 27, 2015 · 2009 Sportsman 500 EFI cranks but wont start. Atv turns over, fuel pump primes when ignition is turned on. It will start fine and idle perfect, but as soon as I touch the throttle it'll pop and backfire like crazy at the carb. #1 · Sep 28, 2015. Always follow the warnings and instructions in Owner's Manual. The next day it wouldnt run so I cleaned the carb again, the plug and filter looked good, and i checked the compression and it was 90 psi. I would be looking for a lack of fuel problem. Sometimes the idle stuck at around 1600 rpm and did not come down to correct level about 1140 rpm. In other words, ATV backfiring occurs due to a short, sudden instance when the engine is too lean or too rich. So this is a polaris 2013 sportsman 800 efi, it started out running on one cylinder, we performed a compression test, 180 psi on pto side, 30 psi on mag side, so we disassembled the engine and found camshaft to be worn off and 2 lifters to be totally collapsed, but the crankshaft and Dec 14, 2019 · 233 Posts. 3) Make sure the fuel tank is venting properly and not buildings pressure in the tank. Oct 1, 2010 · A bubby of mine and I are trying to figure out what my ride is doing. I have a 94 sportsman 400 that i cant get running right. A) Cleaned the injector--looked fine-- nice V shaped spray. In simpler terms, when the engine has more fuel for the amount of air present in it or if the fuel is less than the amount of air it has engulfed, the engine backfires, which manifests as a little explosion in either the intake or the exhaust of the ATV’s engine. Reaction score. I'm assuming its the crank key sheared, any other thoughts. the following week it wouldn't start at all. Once atv cools down, starts fine, and repeats problem. 636. It died when i released the throttle, sometimes this happened immediately or after a few seconds of idle. 1987 Yamaha Banshee 350 twin (sold) Aug 15, 2014 · 1998 Sportsman 500 - 4789 miles. for Sale. Otherwise it runs great! Feb 17, 2013 · Hi guys, I'm new to the ATV world. Wheels. One of them runs fine until engine warms up, then engine. Then it runs for about 10-20 seconds and starts to surge-backoff-surge-backoff, all the while losing power Aug 1, 2010 · bogmanjr. Checked fuel- ok. Oct 9, 2015 · 53816 Answers. GURU front brush Feb 16, 2015 · New to Polaris 4 wheelers, been working on Honda's for a while now, but finding out a lot of differences. Only has about 540 miles. 7243 posts · Joined 2011. I shut off the quad and now it won't start. #1 · Jan 10, 2021. A little back fire sound out of exhaust. 2005 sportsman 500 efi backfires. Abnormal vibrations felt while riding may point towards worn-out parts or misaligned components that Oct 4, 2012 · 3 posts · Joined 2012. Jul 31, 2013 · 4 posts · Joined 2013. I have an 03 700 Sportsman and expirience the same condition intermittently. 25 inches of travel. I replaced everything fuel related (carb, filter, pump, lines) and flushed tank due to gas turning into varnish . Successor to the iconic Sportsman 500, the vehicle boasts the same innovative features – EFI, EPS, Lock & Ride® system, and PVT transmission. #2 · Mar 23, 2024. 14479 posts · Joined 2011. The fuel system will not pump gel. My brand new (only had it for 5 days) 570 has started bogging down and backfiring when I accelerate. PURE GENIUS - we need to get him a job in the engineering dept. Standard. 5mm,after 3 more rides on the same trail backfire is gone. Backfiring thru carb is a lean condition that can be caused by many things. Then it wouldnt start back and the fuel Sep 3, 2011 · 5 posts · Joined 2011. 2009 850 EPS - 2500 miles and counting. Oct 16, 2020 · Sportsman 570 rough running backfires. the rpm are not stable. sputters, backfires and will eventually die. #2 · Nov 18, 2022. ( latebird) FPD218, you should be on the Polaris design/build consult team. Lean fuel normally is associated with a power loss upon thromping on the throttle, it might putt putt but not have enough spritz of fuel / air mixture to burn efficiency. #4 · Aug 26, 2019. It seems that the only way to get it running it to give it about 3/4 throttle. You Jul 17, 2012 · 7 posts · Joined 2012. The crazy thing is, that it will start right back up and idle all day long but as soon as you try to give it gas it spits and sputters and dies. while driving is not smooth. If you like the content please support the c I'll walk you through fixing the rough idle and other issues on a Polaris Sportsman 600/700 Dec 29, 2018 · Hello everyone! I have a 2011 Polaris Sportsman 500 carb with 336. After it starts, it will run rough and not idle for about 30 seconds to a minute until it warms ATVs commonly backfire due to the imbalance of air and fuel sparked outside of the combustion chamber. I know it's harder to get to on the 570, but with my machine it's less than 5 minutes to get it up and running if it's the plug. 2002 polaris sportsman 700 twin 4x4 - rear cargo box. Jul 2, 2012 · 2007 500 efi backfires. com always has the largest selection of New Or Used Four Wheelers for sale anywhere. The quad would only run or idle with the choke on. 4 posts · Joined 2015. EFI 4X4 Sportsman was running great, sprayed off some mud and now will not idle. Engine Backfires. It has the nimble handling and agility of a much lighter, smaller sport/utility ATV and it can be ridden through Jan 8, 2012 · 07 700 sportsman rough idle backfire. It is a 2004 1/2 Sportsman 700 EFI. Consumers can choose from base, Limited Edition, and X2 trims. E. 0 Tires. May 19, 2012 · 2011 Sportsman XP 550 EPS Front And Rear Rack Extensions, Rear Lock And Ride Box With Back Rest, Heated Hand Grips, winch, Fender Extensions, Front And Rear Bumpers, HID Lights, A-Arm Guards, Low Lock And Ride Windshield, Maxxis BigHorn 2. 2008 800 HO Sportsman X2 stolen. Probably has a bad temperature sensor someplace. 362vdc. #2 · Oct 15, 2015. I recently purchased a 2002 Sportsman 500 HO 4x4 with 6000 miles that had been sitting for a long time. It did not come on the rest of the day. My 570 was running fine. It had been sitting a while so I cleaned the carb and it was good to go. Data Erratic, Intermittent Or Incorrect. This only happens at mid throttle. A backfire is normally associated with excess gas passing thru then exploding from exhaust heat. Front Tires. #3 · Aug 2, 2010. I have discussed this with a couple of my friends who own 2011 and 2012 850s and they say they have the same situations. #1 · Jul 31, 2013. - Garage temp sits around 1-2C, so 33-35F. C) Checked TBS voltage. mine has backfired once since I bought it early Sept. Dec 1, 2011 · Well here's the issue then. 2003 polaris trailboss 330 2x4 - freshly rebuilt engine. I have replaced fuel pump twice, replaced spark plug, air filter, crank position sensor, blow out fuel vents, cleaned all terminals and wires, proper voltage. #1 · Jan 29, 2011. #7 · Oct 6, 2015. The machine is awesome and has incredible power. We rode for 15 or 20 min. Sep 12, 2010 · HELP! 700 EFI Spits, Sputters, and Dies. 9/10x I've had starting issues with my machine was because the plug was fouled. Sputtering, backfiring and just quitting. The idle is running fine around 1220-30 RPM, right with in the manufactures recommendations. I just had the car rebuilt by a Polaris dealer. #16 · Oct 8, 2012. I bought my son a 2005 polaris predator 90cc 2 stroke. It starts and will idle fine but when I try to race the engine it acts just like it is running out of gas. Sometimes it will light early backfire. Front &Rear Extenders Polaris hand guards K&N airfilter box system My FenderGuards EPI Clutch System. Oct 15, 2017 · I have a polaris sportsman 500 EFI 2007. It has 1700 miles on it. ( plumberwl5) 5X ATV OF THE MONTH WINNER. It has 600 miles on it now. Sometimes it will backfire when I'm trying to get it started. com Sep 28, 2015 · 106 posts · Joined 2013. And already it won't idle. 11 850 XP L. #13 · Sep 27, 2010. #1 · Sep 3, 2011. I have done the same things to try and repair, spark plugs & wires, carb to Mar 23, 2024 · FPD218. TheATVSuperStore. Has abt 120 hours. COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights Jun 22, 2015 · Mumble Discussion starter. Mar 28, 2017 · 04 1/2 Sportsman 600 backfires won't run without choke. The quad start and run great but when you are riding about 35 or so at a steady speed it stutters and a light backfiring or popping sound comes from the exhaust. Working on a 96' Sportsman 500 right now, and it's bogging down past half throttle. hello good afternoon, my name is Jose Ramon Carrillo and I have a sportsman 550 xp 2010 and never had problems with it but yesterday came out and began to notice a hum in the sound of the exhaust and when I started accelerating and braking began to thunder, after that when I braked completely turned Aug 11, 2021 · 1 post · Joined 2021. The thing runs great cold, but as you are riding it and it starts to warm up it will start to chug and sputter a little. Jul 27, 2019 · Backfiring occurs when one (or more) spark plug in the ATV engine ignites the fuel when it’s out of turn in the chamber, and the exhaust valve on the cylinder is open. Then tap on the valve under the valve cover, I am not sure how easy it will be to get the exhaust off but I have encountered this before and would bet that's the problem. Improper air intake causing a poor burn and fuel build up. Polaris 8" Rear Rack Extender. Nov 18, 2022 · 25432 posts · Joined 2014. #1 · Apr 26, 2021. 2012 550 EPS LE, Blue Fire. 46 posts · Joined 2010. 1. Mar 11, 2011 · 500 Sportsman will idel but not rev up. B) Changed air filter--wasn't that bad but had one on the shelf. In the cold weather this winter, the ATV started stumbled and then backfired. Crankshaft Position Sensor. Today it double backfired pretty hard getting on the throttle from being stopped and the upper left check engine light came on for a few seconds and then went away. 3999 posts · Joined 2013. #10 · Feb 25, 2011. It’s not the runaway throttle Feb 10, 2021 · shellwaster said: Been a lurker for a few months and just joined this morning. Oct 15, 2015 · jgue498. Lately it has been backfiring and has gradually become more frequent. 2500 Polaris winch. It was 0. Feb 23, 2011 · 340 posts · Joined 2010. 12. Starter turns fine. Turns over but won't run, smell fuel and I would get a backfire or two. 5 to 1 Sep 18, 2011 · our 2010 850 would backfire 1 time during are normal 25 mile loop. My buddy brought me his quad because he can't figure out whats going on with it. I've also noticed that if I happen to have a passenger on, then it does it more frequently. Feb 11, 2021 · Fuel pump is the most common problem based on the symptom described. No change. Like it just won't build power while riding. #1 · Aug 11, 2021 (Edited) I have two 2016 Sportsman 450 HO atvs. 2. com), 3-High Headlight Mod, 6000k HID kit, Rigid Ind. It starts and idles fairly smoothly and I can slowly advance throttle to about half way. 5" Kenda BearClaws on rears. Stealth Black. Backfire through the intake is a rich condition, through the exhaust is a lean condition. It was start but stumbles and seems to misfire. Common reasons include issues with the fuel/air mixture, carburetor, ignition, or fuel pump. Took carburetor off and everything appears 2022 Sportsman 570 Touring, X2, and 6x6 Owner’s Manual P/N 9940170 i 2022 Sportsman 570 Touring, X2, and 6x6 Owner’s Manual; ii Welcome; Chapter 1: Introduction 1. Some pump styles can be fixed with a hose clamp. - Cooter Brown top - EMP rear window - Totron 30" curved Feb 10, 2013 · I have a 2013 Sportsman 850 XP EPS that at times backfires when going slow down a hill. If the unit continues to back fire have the dealer re-install your fuel mapping. Inspect, clean and/or replace spark plug. I was told to check the t-bap plug. Oct 27, 2014 · I have a 2007 Sportsman 500 with about 1200 miles on it. That quieted it up but no change in running. Adjusted to 0. Click the link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris. I have a 99 Polaris sportsman 500 that is backfiring through the carburetor. I have to hold the throttle on at 2800-3000rpm and when you let off it back fires. Dec 9, 2020 · ATV backfires when your engine runs excessively rich or excessively lean. It will just cut off. I saw on the Polaris site that the spark plug cap could be bought Mar 21, 2010 · 1,505. With handlebars centered and wheels pointing forward, slowly turn the adjuster sleeve counter-clockwise (out) just. 2009 550 EPS - 8200 miles and counting. I probably started it a total of 5 times. Nov 29, 2012 · 2008 Sportsman 300 - Purchased in 2012 with 25 hours on it - UNI air filter - Polaris 1500 winch 2011 X2 550 - Purchased in 2012 with 58 hours on it - Viper 3500 winch - Front lock and ride storage box - Bighorn 2s all around 2012 RZR 570 - Purchased Dec 2013 - Viper Elite 3500 winch. Went to start it and it kinda chugged. This minor explosion takes place in the engine’s intake or exhaust and can cause the vehicle to shut off. 2010 camo SunPro Temp gauge. Sep 9, 2023 · 2016 Polaris Sportsman 450 HO issue (sputtering,backfiring) Buddy’s 450 HO is going through an insane issue when throttling low. Back again it seem nothing actually fixes my issue. Moved on to checking timing and valve lash clearance Ok, thought maybe the chain slipped, but timing is ok per service manual. New spark plug, has spark, replaced head gasket. As for the hesitation, the 850 doesn't have the instant throttle response like the 800 or 500. Shop Owner and Mechanic with over 50 years experience. Sep 18, 2014 · 4. 4) Make sure idle speed /RPM is correct to spec. My 2001 Sportsman just started backfiring on a long trail ride, along with loss of power. Avante-garde features, a longitudinally mounted Dec 6, 2013 · 6 posts · Joined 2013. Dec 13, 2011 · Mine: 2011 Sportsman 800 Polaris Front Brush Guard, Polaris Rear Brush Guard, Polaris Rear Rack Extender, Polaris L&R Rear Cargo Box, Warn 2500lb winch, Winch Saver, Ricochet A-Arm Guards (www. Ok, I've been dealing with this for years now. I have a 2020 Sportsman that has 65 hours on it and it recently spent 11 days at the dealership to fix a check engine codes 2-520194 and 7-520194 and to resolve a backfire or afterfire. Now it wont run. Though this might sound (and feel Jan 11, 2006 · I just got a 900 and it’s built with a turbo, I’ve driven this machine many times and was bought from a good friend. It doesn't do it every time, and it'll still accelerate in stages and get up to speed. C. Hey guys any help appreciated. Weak spark from spark plug. Location. it's sounds like a fuel mixture/plug issue to me. The Atv dies when Idle, the machine is working at 1120-1180 and suddenly dies and backfire. Stamped Steel. So my '12 XP550, 354hrs, 1112 miles. I added a new fuel filter, fuel pump, and fresh gas. 2xDually w/ strobe box, UNI Air Filter, 26" GBC Dirt Commanders, 1" Billet Wheel Spacers (Front and Rear) HighLifter HD springs Sep 4, 2014 · stave7119. Anywhere from a simple boot air leak, carb not operating correctly (due to dirt, worn needle/seat, worn slide) to bad compression to bad cam. May 25, 2014 · I Have A 2014 Sportsman 570 EPS With 70 Miles On It. I went on a trip this past weekend and bike was running great until the last day. If you got full throttle it runs perfect. On Yesterday I Went Riding On The Trials For 3 Hours And When I Stopped, It Shut Off. Once and a while it will suddenly run great and have no issues until you shut it May 21, 2017 · Current rides:2015 570-a keeper 2016 570 X2-a keeper 2012 550 X2-selling Past rides:2008 800HO red Sportsman, sold. When this occurs I can pull out the choke (enrichner) and the acceleration returns. #1 · Jun 22, 2015. Keep this in mind before spending $300-$400 on a new pump. Figured it got a batch of bad gas, which the locals seemed to agree with. Has not started since. #44 · Dec 15, 2019. I was then convinced to order the t-bap upgrade plug kit from eBay for $34. 2007 sportmans 500 efi running bad ,somtimes it idles high and then goes down down and dies when idling and backfires when you let off throttle. When the key is in the start position the solenoid powers the starter. Get rid of the K&N filter and put the OEM filter in - the K&N will cause a lean mixture and possibly cause backfire in the intake and the most common of a backfire from the exhaust can be a failing spark plug. Then, going up a hill it miraculously cleared and all was good for about 15 minutes. Spark plug has been changed, he runs ethanol free fuel, an really can’t seem to figure out why all of a sudden this is happening. Front/Rear 18W-4 inch solid metal CREE LED Floods. Apr 26, 2021 · 2351 posts · Joined 2013. Wont start, was running fine the day before. 06 500 HO EFI X2. Jun 10, 2012 · The problems can be divided into three. #1 · Feb 21, 2018. Polaris SPORTSMAN 550 Four Wheelers. com. Sep 6, 2011 · New to this but love to ride. I herd that a worn cam or a torn intake Mar 2, 2013 · 06 500 efi sportsman wont hardly run, backfires. The hotter it gets, the worse it gets. Jun 8, 2011 · 2009 Polaris 500 HO :fing02: Front&Rear Brush Guards 2500lb Polaris Winch 2" Ez install lift kit 26inch Zillas & 14 inch ITP wheels . dn gc jj hp sp nn mm vo ic ee