Polaris sportsman backfiring

 

3500HD Polaris Winch w/ synthetic rope. ON position, the ammeter should read negative amps. I blew out the factory air cleaner, and as i said, i changed the plugs twice. Ignition Coil / Wire Testing. you are prob hitting the rev limiter when in reverse. The 850 also likes to have a clean air filter. I checked. Apr 22, 2022 · Hello people I have a 2015 Polaris sportsman 850 with 170hours, it has been backfiring, spitting from the exhaust and making a loud pop where the air filter goes and lost power, I have changed spark plugs, new air filter and replaced the throttle, i don’t know what to do, pls help. -some but not all the time, the engine takes a while to settle back to idle after reving it. Inspect, clean and/or replace spark plug. 25676 posts · Joined 2014. 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. Yesterday it was doing the same and even backfired a couple times. I had my 2010 sportsman at the Polaris dealership for two months. I replaced everything fuel related (carb, filter, pump, lines) and flushed tank due to gas turning into varnish . #1 · Feb 21, 2018. It was running fine. 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. Idles at 1750, backfires upon deceleration when hot and will run well after acceleration begins but runs rough until 5 MPH. J. Aug 30, 2011 · The regulator didn't fix my problem. #4 · Apr 17, 2020. I have a 2005 Sportsman 800 efi that I decided to rebuild. runs hot, surging, high idle, idle speed erratic. Nov 3, 2014 · 2012 Polaris Sportsman HO 500 and backfiring out of the exhaust, dont know how long it sat but put 5-6 hours on it Thursday, Friday and Saturday and ran great till I parked it Saturday night. Back again it seem nothing actually fixes my issue. My 2018 Sportsman 450 HO has 181 miles and 48 1/2 hours on it. A mouse made a nest in my buddies 850 air box with cat food and fried the motor. #1 · Sep 20, 2011. 0 winch w/amsteel synthetic line Viper aluminum haus fairlead Polaris front spring adjusters Ricochet a-arm guards Ricochet full frame skid plate ITP T-7 beadlock 14" w/OMF inner rim guards Always follow the warnings and instructions in Owner's Manual. One of them runs fine until engine warms up, then engine. Backfiring. adjuster sleeve and loosen the adjuster locknut. New to me 1999 polaris sportsman 500. cant seem to get it to throttle up and no power. 3. Backfiring thru carb is a lean condition that can be caused by many things. It’s now sputtering around 5,000 rpm and backfiring constantly til I get off the gas. It doesn't seem to do it until the engine has warmed up to running temp. - 2016 Sportsman 570 SP EPS - Titanium Matte Metallic - Front & rear brush guards, Acerbis Pro X-Strong Hand Guards, Polaris 2500 HD winch w/ Synthetic rope, Burke Lite HID kit, - Ricochet Front & Rear A Arm Guards, Highlifter 2" lift kit, Highlifter 2" wheel spacers (front/back), 26" Pro Armor Attack tires Jun 16, 2012 · C. please help. I put a new spark plug, new inline fuel filter and new air filter in. The quad would only run or idle with the choke on. Share. Remove the (4) screws and cover from the RH control. - 2016 Sportsman 570 SP EPS - Titanium Matte Metallic. Found problem with ETC sensor and repaired - problem solved! Sep 21, 2011 · 3 posts · Joined 2011. I use a small propane bottle to see if the engine speed changes to find intake leaks. -Changed in-line fuel filter. 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. I'll show you in detail how to fix your Polaris Sportsman 500 if it backfires and bogs down. If your spark plug isn’t firing correctly, it can cause your machine to misfire and backfire. amps) connect to the negative battery cable. This can be caused by a damaged or disconnected wire or a faulty spark plug itself. Oct 24, 2009 · 7 posts · Joined 2009. 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. Oct 1, 2010 · A bubby of mine and I are trying to figure out what my ride is doing. #1 ·Oct 24, 2009. Everything looks like new . Nov 20, 2023 · Problem 1: Backfiring Engine. #1 · Jun 24, 2015. Idles perfect,but will not throttle up. my question is, i realize the outside magnet and coil Aug 15, 2014 · 1998 Sportsman 500 - 4789 miles. A) Cleaned the injector--looked fine-- nice V shaped spray. It is a 2004 1/2 Sportsman 700 EFI. It constantly backfires from the air intake. Hello all, I am new to the forum and am having an issue with my 2015 Sportsman 570 EFI. My buddy brought me his quad because he can't figure out whats going on with it. Also if the cable is adjusted to tight Mar 21, 2010 · 1,505. -freshly rebuilt top end. May 29, 2013 · 2002 polaris sportsman 500 ho won't start backfires. Engine Backfires. TheATVSuperStore. 5 posts · Joined 2020. Very new to the online posting scene so apologies in advance if I am out of line here. Sep 21, 2011 · 3 posts · Joined 2011. Sep 11, 2022 · wow, sounds like we are in the same school just different halls. Tried giving it throttle to start and wanted to sputter and not start. 45 min started driving (10 min) and it stalled. Oct 16, 2020 · Sportsman 570 rough running backfires. That quieted it up but no change in running. Then the quad started to backfire and stalling and the ingine light came on. Once I give it throttle slowly it will rev up and run good at high rpms. 5" Kenda BearClaws on rears. I tried several times to start it after ckecking the plugs and plug wires and it still was backfiring and stalling. #2 · Oct 15, 2015. 2xDually w/ strobe box, UNI Air Filter, 26" GBC Dirt Commanders, 1" Billet Wheel Spacers (Front and Rear) HighLifter HD springs 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. Ok, I've been dealing with this for years now. COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights Oct 16, 2018 · The main cause for backfiring is anything that can lean out the fuel/air mixture. The ignitions and crankshafts are different - you need the 94 ignition and wiring harness on to 03 - because the crankshafts are different, you cannot put the 03 ignition and flywheel on the 94 engine. Apr 26, 2023 · 2015 Sportsman 570 EFI--Backfiring, Stalling, Rough/No Idle, Loss of Power. It kept dying everytime he started it so it was put away in the garage for a couple years. I removed plugs, L one was wet with gas. It starts and idles fairly smoothly and I can slowly advance throttle to about half way. I recently purchased a 2002 Sportsman 500 HO 4x4 with 6000 miles that had been sitting for a long time. Nov 24, 2023 · I have a 2002 Sportsman 700 that keeps backfiring and will bog down when you give it any type throttle. Also check inside the battery box for mouse nest. 1987 Yamaha Banshee 350 twin (sold) Nov 18, 2022 · 25432 posts · Joined 2014. clearcreek49 Discussion starter. That when it didn't start, I checked for spark, gas and ect and is getting spark and gas. checked pulse gap on flywheel. Mar 2, 2013 · 06 500 efi sportsman wont hardly run, backfires. It was 0. I have a 2012 sportsman 800 and yesterday i went riding and it ran fine for the first 30mins. Replaced plug and put fresh non ethanol gas. About a month ago, it refused to start. Oct 28, 2017 · 7 posts · Joined 2017. Proposed preliminary tries ( if have not been done ): • drain/clean tank; • change to fresh fuel; • check/clean fuel path; • test fuel pump's output pressure; • check/soak/clean/test injector. It has 600 miles and has been very well taken care of. 5" Kenda BearClaws on rears 2010 Sportsman 500 HO - 1417 miles 189hrs Front/Rear 18W-4 inch solid metal CREE LED Floods Tamarack 10" Footpegs Polaris Front brush guard - bumper ODI Rogue 130mm grips Feb 27, 2018 · Help sportsman intermitingly backfires and stalls. it idles fine, too. #5 · Jun 1, 2020. I picked up an 06 500 efi Sportsman. And still have all this I still have intermittent stalling, rough idle. I probably started it a total of 5 times. 12. have a 2002 sportsman 700 with carb, when attempting to start, it pops back violently thru carb, enough that it ripped 4 teeth off of starter drive. We cleaned it all out, cleaned the carb and now Feb 11, 2021 · Fuel pump is the most common problem based on the symptom described. I have done all of the following with no luck. (battery discharge). Oct 1, 2019 · Sportsman 800 Rough Running. 5" Kenda BearClaws on rears 2010 Sportsman 500 HO - 1417 miles 189hrs Front/Rear 18W-4 inch solid metal CREE LED Floods Tamarack 10" Footpegs Polaris Front brush guard - bumper ODI Rogue 130mm grips Aug 12, 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. It started missing and backfiring badly Sorry you had to wait awhile but I’ll do my best to help. EFI does not like a bad connection. plenty of gas. I turned off, put key back into the on position, I heard the fuel pump engage and tried again nothing just cranking. My 2001 Sportsman just started backfiring on a long trail ride, along with loss of power. Using an inductive amperage metering device, (set to DC. G No fuel in tank. Feb 19, 2014 · 1. Nov 21, 2019 · Hi, first post here. Had the quad for about 18 months. try pushing the yellow reverse overide button on the left handle bar. Jun 24, 2015 · 992 posts · Joined 2014. Jan 10, 2021 · 2K views 1 reply 2 participants last post by FPD218 Jan 10, 2021. not sure if you got your intake boot or not yet but if its cracked it will cause it to backfire alot. Glacier II Plow System with plow strap. com. Misadjustment or malfunction of the carburetor can lead to improper fuel combustion, causing backfires. I was in no water today, but did get stuck in May 25, 2021 · Backfiring & loss of power. It bogs backfires and won't idle. Incorrect spark plug gap or heat range. The battery was fully charged and it cranked fine. Nov 22, 2023 · bp405. The problems I was having on the trail would show up in one of two ways: 1) It would slowly die and peter out while driving at any speed. A friend towed me a couple. 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. 2xDually w/ strobe box, UNI Air Filter, 26" GBC Dirt Commanders, 1" Billet Wheel Spacers (Front and Rear) HighLifter HD springs I show you how to diagnose a backfire issue on your Polaris Sportsman 500 and inspect camshaft. The last time I went to start it, it wouldnt hardly start, and when it did, it sputtered really bad when running. Replaced the drive, pulled flywheel and found a broken magnet. 25489 posts · Joined 2014. Feb 10, 2021 · 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. At one point my sportsman sat around for about 2 yrs. Then, going up a hill it miraculously cleared and all was good for about 15 minutes. Check the battery terminals and get a voltage reading of the battery when the machine is off and running with a meter. It was start but stumbles and seems to misfire. If i apply the throttle quickly it will just backfire and die. It has 600 miles on it now. 2) Eliminate a binding throttle cable or any sticking of movement on closing. 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. Show LO on dash so I replaced the battery. It sat for a couple years. Sounds almost like popcorn. Symptoms are, Intermediate stalling, no start, Back firing and ruff Idle. This only happens at mid throttle. The ignition coil can be tested using an digital multimeter. The only thing found was a couple loose wires within the ECM plug harness. It looks brand new basically. Slide the boot back far enough to expose the inline cable. I just replaced the clutch/bearing part under the flywheel. 2003 558 predator, lotsa stuff! Apr 25, 2006 · After the main jet has been set, run the bike at half throttle and check the plug color. This minor explosion takes place in the engine’s intake or exhaust and can cause the vehicle to shut off. Jun 1, 2020 · lateburd. With engine off and the key, kill switch, and lights in the. 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 Jun 20, 2015 · 1998 Sportsman 500 - 4789 miles Front/Rear 18W-4 inch solid metal CREE LED Floods Polaris 8" Rear Rack Extender ODI Rogue 130mm grips 12. Found problem with ETC sensor and repaired - problem solved! Oct 10, 2012 · 1. I pulled the OE Autolite plug, which was pitch black, and replaced it with the NGK equivalent. Rode around no issues. It is kept in a heated shop year round. Was running perfectly before the starter fix but had been sitting for months. 2. E) Changed spark plug. It did not come on the rest of the day. 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. The other day he got motivated and wanted to work on it so we took apart the carb and saw the bowl was gummed up with white crusty stuff. Oct 17, 2016 · I have a 2014 sportsman 570 that I just bought last week. Hey guys, new to the forum and a new Polaris owner. 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. Got to operating temp than ran like crap, backfired violently and died out. I have an 07 sportmans 450. Now, there is always the exception to that, but you said you had black smoke and popping. I did replace the spark plug, no help. Seems to run alright at higher RPM until you let off any help wound be great Thanks mike. The carburetor plays a critical role in regulating the air-fuel mixture entering the engine. It does feel hot on my leg when wearing shorts while riding but the high temp light never comes on. 3100 miles on the machine. It idles fine and if you ease in into the throttle it’ll rev up pretty decent but if you try to give it any kind of throttle past just an throttle it’ll rev up pretty decent but if you try to give it any kind of throttle pass just a gentle squeeze it’ll bogs down and backfires. Water in the air box and oil nothing. Backfired and loss of power again for very short time, then all good again. - Front & rear brush guards, Acerbis Pro X-Strong Hand Guards, Polaris 2500 HD winch w/ Synthetic rope, Burke Lite HID kit, - Ricochet Front & Rear A Arm Guards, Highlifter 2" lift kit, Highlifter 2" wheel spacers (front/back), 26" Pro Armor Attack tires. #1 · Jan 10, 2021. New gas, running high test ethanol free gas. Changed all my fluids and went for a ride to go pressure wash it at the car wash. It will start however it is a little hard even with a new battery. It starts right up and runs great under acceleration, but pops and backfires when decelerating. When this first happened there was a way to read a code on the quads computer, it stated crank trigger problems. Solution. Aug 11, 2021 · 1 post · Joined 2021. Aug 2, 2023 · 25784 posts · Joined 2014. This MY was prone to 'soft' cams that wear down prematurely - could have Apr 19, 2016 · 1998 Sportsman 500 - 4789 miles Front/Rear 18W-4 inch solid metal CREE LED Floods Polaris 8" Rear Rack Extender ODI Rogue 130mm grips 12. Though this might sound (and feel Dec 3, 2021 · I have a 2021 Sportsman 570 I purchased new. With handlebars centered and wheels pointing forward, slowly turn the adjuster sleeve counter-clockwise (out) just. I'm having some issues with the idle running very rough. She starts and idles great. OK guys, got a 98 polaris sportsman 500 4x4, it started popping and backfiring the other day so like most I thought carb problem so I bought a new one, didn't work. Mar 31, 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. Though it would bog out when i put a load on the engine going up hill mostly. Aug 10, 2023 · kickback and backfire when cranking. 2) After stopping and shutting down for a few minutes, It would start up and get to about 1000-1100 rpms and slowly peter out again. Today I went to start and it just cranked and cranked. This can be as simple as a leaking exhaust gasket that sucks fresh air into the hot exhaust or air leaks around the intake area of the engine. Possible Cause. 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 Feb 21, 2018 · 3 posts · Joined 2018. It ran great until three days ago. G Fuel lines or fuel valve restricted. 1,037. If it's white, lower the clip on the jet needle to richen the air/fuel mixture. #2 · Nov 18, 2022. 1 post · Joined 2016. Mar 23, 2022 · Bogging, backfire, died, WILL NOT START NOW. May 11, 2009 · 500 polaris atv I installed new carb,new camshaft and intake and exhaust cam followers,oil and filter change. This ATV has 50 hrs and actually belonged to a little old lady who drove it to a mailbox Feb 7, 2017 · 1998 Sportsman 500 - 4789 miles Front/Rear 18W-4 inch solid metal CREE LED Floods Polaris 8" Rear Rack Extender ODI Rogue 130mm grips 12. Replaced the TBAP sensor harness (saw a bare wire). Use the following specification table and illustrations to test the ignition coil. what with this thing. Location. Meaning that the engine is receiving less fuel than it requires Apr 16, 2020 · lateburd. Common reasons include issues with the fuel/air mixture, carburetor, ignition, or fuel pump. I just bought this 05 Sportsman 700 EFI. Shop Owner and Mechanic with over 50 years experience. This can happen due to a dirty or malfunctioning carburetor, faulty spark plugs, a bad fuel pump, or a clogged air filter. Dec 14, 2019 · Nick B. Once atv cools down, starts fine, and repeats problem. Smithers, B. 4) Make sure idle speed /RPM is correct to spec. Very hard to restart once it dies. C) Checked TBS voltage. -Changed spark plug. Dec 9, 2020 · ATV backfires when your engine runs excessively rich or excessively lean. Backfiring in the engine is usually caused by an improper fuel/air mixture or timing issue. 5" Kenda BearClaws on rears 2010 Sportsman 500 HO - 1417 miles 189hrs Front/Rear 18W-4 inch solid metal CREE LED Floods Tamarack 10" Footpegs Polaris Front brush guard - bumper ODI Rogue 130mm grips Here's a common issue with the Polaris ATV. 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. Cooled off and ran great. If you got full throttle it runs perfect. . Now , I put on a new carb, new fuel pump. COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights Jan 7, 2014 · 1998 Sportsman 500 - 4789 miles Front/Rear 18W-4 inch solid metal CREE LED Floods Polaris 8" Rear Rack Extender ODI Rogue 130mm grips 12. Nov 5, 2015 · 2010 sportsman 550 backfiring fix. The pilot circuit can be adjusted while the bike is idling and then test run. Feb 17, 2013 · Hi guys, I'm new to the ATV world. 295 posts · Joined 2010. B) Changed air filter--wasn't that bad but had one on the shelf. Hi, I have a 2003 Polaris sportsman 600 twin. 2010 Sportsman 550 XP EPS Crimson Red, Rear Apr 6, 2016 · Nick B. 2010 Sportsman 500 HO - 1417 miles 189hrs. My 570 was running fine. I'm new to the post hopefully someone can help! And the atv stalled and would not start back up. 4 posts · Joined 2012. . 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. It started missing and backfiring badly Mar 26, 2018 · 160 posts · Joined 2017. 2010 Sportsman 850 XP EPS Stealth Black. 14479 posts · Joined 2011. I have read a ton of stuff on this subject and special thanks to AKStew for all his headaches and postings! My problem was similar in my 07 800 Sportsman. Changed air filter and spark plugs but no change. Recent work had nothing to do with the engine (propshaft u-joints, rear brake master, right ball joint). Dec 10, 2019 · 2007 Sportsman 800 EFI - Backfire, running rough and stalling **ANOTHER FIX**. JH73 Discussion starter. ATVs commonly backfire due to the imbalance of air and fuel sparked outside of the combustion chamber. I just had the carb cleaned but not rejetted. C. 353. Outside of that try getting a fuel pressure reading, should be 58+/-5psi. #2 · Nov 23, 2023. Once it starts it will run until it warms up and then it starts to not like life. Its been running rich since I got it, about 1 month now, and Nov 6, 2021 · 2011 Sportsman® 800 EFI GURU front brush guard GURU rear brush guard Polaris front lock n ride cargo box Polaris rear rack extender Warn RT 3. 362vdc. Mar 31, 2016 · Rthorp11 Discussion starter. 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. #10 · Feb 25, 2011. Reaction score. Have tried checking key on flywheel, changing spark plug and new fuel still no luck. Next day it started and idled. Popping while giving it gas is rich. The other day I had it idling fine in the parking lot for like 10-15 mins took it for a ride down the street felt like it was going to die so I raced back and it died when I let go the gas. Ok I have the manual for a 2014 570. Dec 28, 2010 · waynev. I did a compression test on it came up to about 75. Had just enough to crawl. #1 · Aug 11, 2021 (Edited) I have two 2016 Sportsman 450 HO atvs. G Fuel filter plugged. 1893 posts · Joined 2013. TEST CONNECTION RESISTANCE. One of the most common causes of backfiring in a Polaris Sportsman 500 is an issue with the spark plug. I have a 2007 sportsman 800 that has trouble idling and revving up. Apr 11, 2012 · Here are the symptoms I'm currently experiencing (mostly with engine warmed up): -Popping out tail pipe and backfiring with half to full throttle rpm deceleration. G Restricted tank vent, or routed improperly. Less than a block away, I started bogging, backfired LOUD, and died. #1 · Oct 28, 2017. Tamarack 10" Footpegs. Possibly the fuel regulator is bad. thanks all for allowing me to join here. 06 Sportsman 800, 60" glacier plow, rear cargo box, pure polaris hand guards, 2500 winch. As I normally do. Feb 25, 2014 · The ATV will start up and idle just fine, however when you push on the throttle it seems to bog down, lose power, and then it will backfire, sometimes even shooting sparks out of the exhaust. -Changed air filter. Front/Rear 18W-4 inch solid metal CREE LED Floods. We cleaned it all out, cleaned the carb and now May 28, 2023 · 2022 sportsman 570 ultimate trail issue. Aug 26, 2014 · Symptoms: Hard start or no start, bog, backfire, popping through intake / exhaust, hesitation, detonation, low power, spark plug erosion, engine. Only has about 540 miles. Hi There. plug stays dry. 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. I took it out of storage put new gas in it. #4 · Jun 17, 2012. That tells me that you are rich. Did it three or four times, but won't do it every time. Powder coated the suspension, replaced all bearing and axles, stator, voltage regulator, injectors, plugs, fuel pump, fuel pressure regulator, TPS Sensor MAP Senor and plug, Temp sensor, new hoses, winch, front brake handle and a ton of other small items. Lately it has been backfiring and has gradually become more frequent. 2002 polaris sportsman 700 twin 4x4 - rear cargo box. #9 · May 24, 2018. 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. sputters, backfires and will eventually die. #1 · Mar 31, 2016. This spring I went to take it out & it wouldn't start. Carburetor Inspection. I put new plugs and wires on it. Before i did that. It was running last week no issues. #6 · Aug 3, 2023. The 2015 should be the same. 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. ODI Rogue 130mm grips. 2011 Sportsman® 800 EFI. I then changed the spark plug and removed and cleaned the Jul 2, 2012 · 2007 500 efi backfires. Adjusted to 0. OK - knowing that, the backfire is probably caused by a lean condition at idle - Honda engineered a 'air cut valve' for carbs on some of their vehicles to cut air to the idle circuit during deceleration enriching the mixture to prevent backfiring in the exhaust - this was done Nov 16, 2020 · More I ride around the house the worse it got now backfires really bad/loud and dies after decel. Connect a tachometer to the engine. Weak spark from spark plug. 2003 polaris trailboss 330 2x4 - freshly rebuilt engine. Shut it off. com), 3-High Headlight Mod, 6000k HID kit, Rigid Ind. I was wondering if anyone could be of some help- My 2005 Polaris Sportsman 700 is backfiring on deceleration. Jul 22, 2019 · My kids 90 sportsman (2005 I think) hasn't been run in a few years. So I replaced that. Aug 23, 2021 · I have a 2003 sportsman 500. No change. Oct 27, 2014 · 1) insure the throttle plate snaps all the way closed when you let go of the lever. Checked the carb spacer for a crack. When I go a little past half throttle it loses power and almost sounds as though its backfiring. It rode great the first few days and then all the sudden it starting bogging down when trying to throttle up. Sep 5, 2021 · 2011 Polaris Sportsman 550 will not start ( huge backfires) This machine just all of a sudden will not start. Initially, let's try check and review the basics. It has 1700 miles on it. The first thing I noticed is the front donut gasket was blown out. Tried to start and acted like battery was weak. I recently purchased an 09 sportsman 500 ho. Apr 30, 2006 · Popping when letting off means lean. 5" Kenda BearClaws on rears 2010 Sportsman 500 HO - 1417 miles 189hrs Front/Rear 18W-4 inch solid metal CREE LED Floods Tamarack 10" Footpegs Polaris Front brush guard - bumper ODI Rogue 130mm grips May 4, 2013 · On the way out of the woods my 2006 sportsman 500 x2 was backfiring out the exhaust under deceleration. 3) Make sure the fuel tank is venting properly and not buildings pressure in the tank. Oct 18, 2017 · Check your battery connections and make sure they are clean and battery is fully charged. I thought you had this fixed a few weeks ago. The hotter it gets, the worse it gets. Pulled the head cover to look at the cam. This is not constant, it will be running good and then pop once or twice and Feb 11, 2021 · Fuel pump is the most common problem based on the symptom described. But it also backfired a few times when I slowed down coming back. If it's dark brown or black, raise the clip to lean the air/fuel mixture. Any help would be greatly appreciated. I've owned numerous 500's in the past and have encountered the dreaded cam problem. Feb 24, 2019 · Polaris Sportsman 500 was backfiring through exhaust at idle and wouldn’t throttle up. -up and down idling (when it does idle), and sometimes reving by itself. Jul 22, 2013 · After 2 weeks of fighting my 2004 700 efi sportsman I am looking for some advice before I start throwing parts and/or dynamite at it! I used it all winter to plow snow. Polaris 8" Rear Rack Extender. Then it wouldnt start back and the fuel Jan 28, 2017 · 09 sportsman 500 bogging down backfiring top end. Mar 11, 2023 · 5. It wanted to restart a few times, but wouldn't. 2005 sportsman 500 efi backfires. This doesn't act quite the same as those Jan 21, 2024 · Inspecting and maintaining the exhaust system is crucial for preventing backfiring problems in the Polaris Sportsman 500. Mar 28, 2017 · 04 1/2 Sportsman 600 backfires won't run without choke. In other words, ATV backfiring occurs due to a short, sudden instance when the engine is too lean or too rich. Feb 23, 2011 · 340 posts · Joined 2010. backfire and spits through carb. Oct 15, 2015 · jgue498. Sep 12, 2015 · 2004 Sportsman 700 Hard to start, takes full choke and then 3/4 choke to keep it running. Back fire through the intake indicates a lean condition possibly caused by fuel quality - if using alcohol blended fuel give the EFI time to adjust to the fuel - if using non ethanol fuel, take it back to the dealer for tweaking of the fuel mapping, possible vacuum leak or resetting of the TPS. #2 · Dec 28, 2010. gi hc ur np ps xz yd zw ev uj