Signs of a bad exhaust camshaft lobe on 2001 polaris ranger 500. Still not the cause of the backfiring .

Signs of a bad exhaust camshaft lobe on 2001 polaris ranger 500. Had a sportsman for years, and looking at a used 2010 RZR 800 with ~1000 miles. If the intake lobe is flat, then you would have compression problems, because it can't pull any air in the cylinder making it act like a dead cylinder. I took it to the dealer and had a mechanic listen to it and he told me they are loud because of the long stroke and to just keep fluids changed and ride it. Come join the discussion about performance, modifications, winches, tires, troubleshooting, maintenance, reviews and more! Jul 26, 2014 · The 500's are loud engines and my 2013 sounds at least that bad. Here you can see the timing marks: a line on the exhaust cam and a dot on the intake cam. Other sets are $300+. Additionally, the exhaust valve buckets are caved in by 0. Oct 26, 2014 · Short story: I had no exhaust lobe on my cam, changed out the cam to a new one. Feb 1, 2016 · 2011 Polaris Ranger XP 800 EPS Polaris roof Seizmik Modular Windsheild Bull Dog Mirrors Mud Hog Tires Warn 4500 lb Winch 1995 Polaris 500 had worn exhaust cam lobe replaced it and still no power and back fires at 1/2 throttle. The HO style grind will work on all Sportsman 500’s, but non-HO models would benefit more when using the larger carburetor Mar 12, 2012 · Bought my 2011 ranger xp 800 new in july last year ,Never had any problem suddenly developed miss at idle, got worse same day . We proudly produce an exciting line of utility and recreational products. 25" Sedona Coyote tires 2017 Polaris Ranger 1000XP - Roof and front glass 2018 Kawasaki KLR650 2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up SOLD 2004 Sportsman 600 Twin Jul 10, 2017 · I have an 2011 800s rzr that has a worn lobe\lifter smack. Feb 16, 2023 · He opened up his rocker cover and pointed out a cam shaft lobe that was worn down 1/4", The guy said Polaris uses too soft steel in their cam shafts and it's a frequent problem with the loss of power problem. I found a whole head nearby for a good price. I just can't think of anything else to check, without taking the Jul 28, 2013 · Both the exhaust and intake cam lobes should be facing outward also. Come to find out the air boot had fallen apart and was sucking dirt straight into the engine. Overall Pick Cam Timing Chain Rocker Arm and Camshaft Gear Kit For Polaris Sportsman Ranger Scrambler Magnum ATP Big Boss 400 450 500 3084910 Add to cart MOTOKU Camshaft & Exhaust Rocker Arm for Magnum 425 500 Ranger 500 Crew Sportsman 400 Xpedition 425 Save 27% Lowest price in 30 days Add to cart Oct 1, 2014 · New Camshaft 2001 Polaris Sportsman 500 RSE HO Remington Special 01 Cam Shaft | eBay I ordered this one instead of OEM because it said it was forged and OEM wasnt. What happens is the ball wears a groove in the exhaust rocker arm and also in the weighted release lever that activates it. If you can't, turn the motor a little bit and see if you see it then. • Snowmobiles • All-terrain vehicles (ATVs) •RANGER utility vehicles • Victory motorcycles We believe Polaris sets a standard of excellence for all utility and recre- ational vehicles manufactured in the world Feb 4, 2011 · Hi, Does anyone know how to do a valve adjustment on a 2002 sportsman 400, diagrams or video would be great!!!!!. Well, mine is almost gone, with a flat spot about an inch across what once was the radius of that lobe, so I'm going to install a new cam in there. Compression low on 1st cylinder next to belt. and still the same May 1, 2023 · What Is Polaris Sportsman 500? The Polaris Sportsman 500 is an All-Terrain Vehicle (ATV) that has a 4 stroke engine and an independent rear transmission. Which mark on the flywheel is the tdc timing mark? Btw its a 2002 Sportsman 500. 1. I was just wondering how difficult the job is to replace this? I'm more of a novice so I would need more detailed instructions or a you tube video if anyone knows of one. These bikes had a known issue where the metal the cam was made of may have been a little soft causing premature lobe wear on I show you how to diagnose a backfire issue on your Polaris Sportsman 500 and inspect camshaft. It ran fine for a month and then threw the decompression Lever and shaft (Part # 3085348) out through the end cover (called an "Adapter, Camshaft" Part # 3084866). 25" Sedona Coyote tires 2017 Polaris Ranger 1000XP - Roof and front glass 2018 Kawasaki KLR650 2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up SOLD 2004 Sportsman 600 Twin In-Stock Replacement Parts for Polaris | 3086212 3085855 3084898 Scrambler 500 Sportsman 400 Ranger 500 Feb 25, 2014 · I replaced the starter on 500 Polaris sportsman, it will start right up and next time I try to start it everything is locked up. Looks like I'm looking at at least one new bucket in a new exhaust cam . Dec 21, 2024 · The camshaft is a crucial component in the operation of a combustion engine, controlling the opening and closing of the engine’s valves to allow for proper air and fuel intake and exhaust. –Tech Tip courtesy of Crane Cams We would like to show you a description here but the site won’t allow us. D. The exhaust lobes on the camshaft were totally shot, barely there at all. Wear on the cam itself should have no ill effect on the decompression. 5K subscribers 40 6K views 4 years ago Polaris Sportsman 500 Checking Cam Chain for wear or replacementmore Product Description Part Numbers Fitment Hot Cams Racing Exhaust Camshaft Stage 1 Polaris Ace / Ranger / RZR Elevate your motorcycle's performance effortlessly with the Hot Cams Stage 1 Racing Exhaust Camshaft. Increase performance and reliability with this high-quality upgrade. Feb 7, 2011 · Well I looked at the cam. Scott Larosa 368 subscribers Subscribe Hot Cams Racing Exhaust Camshaft Stage 1 Polaris Ace / Ranger / RZR Elevate your motorcycle’s performance effortlessly with the Hot Cams Stage 1 Racing Exhaust Camshaft. 3. Jan 12, 2006 · I've posted this on many other forums and wanted to post it here so that you don't rack your head trying to figure out what is wrong with your machine, this problem can be when it is dry like mine did, but really affected when you run through water or mud: It usually appears as the machine may 2 stars because the rocker arms for the intake valves are machined the wrong size and wouldn’t fit on the camshaft. Just goes up a little bit the flattens off and looks scored bad. 25 long 3. RANGER 500 2018 offroad vehicle pdf manual download. I'm in for already a cam and lifters set but I'm going to inspect for shavings, check the crank while the motor is out. I herd that a worn cam or a torn May 6, 2025 · A failing camshaft position sensor will provide several warning signs. thanks in advance. It wasn't the timing or the carb, it was a ground down camshaft exhaust lobe. 31 +tax Polaris OEM Parts: Kit, Camshaft - Cheap Cycle Parts I would guess that you should be able to see the bad lobe (s) on the cam by appearance, but I could be wrong. However, some models have fewer problems than others. These lobes can become worn or damaged, leading to a variety of symptoms that can negatively impact engine Watch as I show you how to tear down a Polaris and Repair the Head Gasket, Camshaft replacement, Carburetor Rebuild, Repair Brakes. Slight miss at Idle and backfire spudder on acceleration. I am assuming that the lever allows the ball to retract into the lobe for the measurement. With the new cam installed, make sure to use the 0W40 oil and avoid short trips that cause condensation to accumualate in the oil. If the camshaft is failing, your car’s performance will suffer, and left unchecked, it can lead to significant engine damage. While at TDC, look down the crank sensor hole and you should see the timing mark. There isn't much of a exhaust lobe. The Piston nearest the cam sprocket is the RH Cylinder, this cylinder is beginning the exhaust stroke when LH Cylinder is on TDCC. All of a sudden it starts ticking in the engine. Well, around the time my 2015 Ranger ETX hit 4000 miles, it got really hard to start cold. Mar 19, 2022 · Pulled valve cover to check valve lash, and found substantial wear on the exhaust cam lobe and lash cap/bucket. Took it to the local polaris shop, and they said it was the cam going out, that sometimes Sep 1, 2006 · Im going to change the oil, but im pretty sure I have a bad clutch. (and some others) the C. Feb 23, 2011 · Make sure if fits your model number. Perform an oil pressure test to determine if the camshaft is the culprit. it is really annoying but what could it be thanks. Chris Mar 27, 2019 · About this item Includes Camshaft, Exhaust Rocker Arm, Intake Rocker Arms (2) and Gasket Made from Forged Steel, then Hardened and Heat-Treated for Ultimate Strength and Durability Proven to work with all Factory Cylinder Head Components. If you engage the clutch at anything other than an idle the clutch will suddenly engage, harshly. Mar 21, 2014 · My 2013 Ranger 800 EFI has a blown engine at 52 hours, and 30 days out of factory warranty. I test drove it and it seemed very weak compared to by 500 sportsman. Bought a cam and rockers on ebay. Sep 8, 2024 · Usually the decompression ball wears a groove into the exhaust rocker arm rendering the decompression mechanism ineffective. Complete camshaft kit with better heat treating and a Rev6 engines & parts 1 year warranty Apr 24, 2011 · Went to check my valve this morning and the timing mark on the the flywheel are lined up to the middle one but my camshaft marks are off, so did my chain jump it was loud. Camshaft problems in Polaris ATVs and UTVs can be frustrating, but understanding the causes, symptoms, and preventative measures can help you keep your machine running smoothly. I pulled off the cover and the compression lever sheared off the shaft, dowel pin "ovaled" the cam, and end of the cam was chewed up. The first indication of a lobe and rocker arm failing is the tappet clearance increases and has to be adjusted closer to increase valve lift. Sportsman 500’s are notorious for prematurely wearing out the lobes, especially the center lobe. Pulled the cam this afternoon and found that the ball bearing was missing from the camshaft. Engine Backfiring: worn-out camshaft lobes can cause your engine to backfire. I appreciate all the help! Upgrade your Polaris Sportsman 500 Camshaft with a high-performance option from Quad Logic. Good luck. and use the pull start to turn over the motor. I have it in at the dealer getting the oil changed and they called and said they recommend a valve adjustment? I am wondering if I really need this done? Is there any way to tell? The ranger starts easy but doesn't idle until . Mar 21, 2020 · There is top dead center and bottom dead center twice for each complete combustion/exhaust cycle - timing is done at TDC and there is only one TDC - whether it is TDC of the combustion stroke or exhaust stroke is determined by the camshaft that is turning 1/2 as fast as the crankshaft - crankshaft makes two full rotations for each one rotation of the camshaft. How to remove a cam on any Polaris 500 engine. Nov 17, 2020 · Problem #2 is the exhaust cam lobe is damaged mainly at the high point on the lobe. I have heard that when I go to replace the camshaft and exhaust rocker arm, I can replace the carb also, all with 500 H. Jun 24, 2024 · Removing the valve cover can provide a visual indication of camshaft wear. Apr 19, 2013 · Hey guys I have been wanting a rancher for a long time and just bought a used 2005 ranger 500 4x4 with almost 600 hours. But can you continue driving? And how much will it cost to fix? Oct 10, 2015 · Don't mean to kick when down but had you followed the Polaris service manual's procedures, you would have pulled the rockers beforehand exposing the cam lobes for inspection. I'll show you the most accurate way to set your timing chain and sprocket so your polaris 500 is in perfect time. I got it real cheap but I started to go into it because it didn't have compression so I bought a new piston and ring kit for it and installed it, but now when I try to start it all it does is shoot fire out the exhaust or the intake of Oct 19, 2013 · 2000 Polaris sportsman 500 cam shaft exhaust lobe worn down. I checked battery and connections everything is good. Signs of problems, not taking throttle, blowing fuel out the back of carb It started easy and idled great, but bogged when given throttle to the point of stalling. Some say it's rock solid, some say it's junk. Mar 2, 2023 · The camshaft position sensor helps your engine to fire the ignition properly and these are the 7 most common symptoms of a bad one. Dec 22, 2012 · About two weeks ago, the compression release lever blew a hole in the camshaft cover on the engine. I will be taking off the plastics and such to get a good look at it. I just put a new camshaft in because of broken compression release. 's free of charge. 1999 Polaris sportsman atv. Aug 27, 2022 · I have a 99 Polaris sportsman 500 that is backfiring through the carburetor. Are my educated assumptions correct or am I 180 degrees off? May 6, 2014 · I have been looking around but haven't seen much on how successful people have been just replacing the exhaust rocker arm and utilizing the existing camIf anyone has any experience with this I would appreciate any feedback. Step by step camshaft Jan 30, 2015 · The exhaust cam lobe is soft and wears down to nothing on your year bike,take off your valve cover and turn the engine over by hand and watch for exhaust valve lift. Sep 23, 2014 · 2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers 2001 Magnum 325 MOSE 12" rear wheel conversion. Jul 11, 2008 · there is a clicking/ticking noise coming from the top right side of the motor. I have been a mechanic for Jun 27, 2021 · I mentioned before the video of the guy showing his cam shaft's exhaust lobe that was worn down. I'm hoping I won't have to pay for a Polaris cam shaft and mess with that, but it sounds possible. Remember, only compare intake to intake, and exhaust to exhaust; many engines have "split-pattern" cams with different specs for the intake and exhaust lobes. 's for the Sportsman 500 H. I then pulled the pin on the chain tensioner which took out all the slack. Cam was right on spec. The following models are the most problematic. Read on to learn about how a camshaft works, common signs of a failing camshaft, and what to expect as far as repair costs go. to do that pull the spark plug out and remove the valve cover. For the mechanical limits to see if your camshaft is good. The Polaris Sportsman is deemed to be reliable and durable. thanks Jack Oct 12, 2015 · 2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers 2001 Magnum 325 MOSE 12" rear wheel conversion. Looking at my Polaris Sportsman HO 500 4x4 Cam Shaft. did NOT turn the fan on when the temp switch told it too, it could cause overheating. 1998 Polaris sportsman 500 ATV. 2. the exhaust always gets the scratch, you are writing about from the decompressor. When the engine is being cranked and the RPMS are less than about 500, the ball protrudes above the cam lobe and opens the exhaust valves a few thousandths of an inch to reduce compression and allow the piston to build speed and get over TDC easier. Avoid the following years’ models of Polaris Rangers. Also, measuring valve lash is supposed to be part of your regular maintenance schedule. Then get new camshafts if that is the problem. It has been used on the farm and on a hunting lease. Jan 21, 2021 · I put a used complete cam with end cap in my 04 500 ranger in November. I'll show you step by step how to remove a bad camshaft on a Polaris 500 engine and give you tips how to give it more horsepower! If you get a much lower reading for one intake valve compared to the other intakes, you've found your bad lobe. Inspect camshaft and automatic decompression mechanism if compres [1]sion is abnormally high. Jul 21, 2025 · Learn the most common symptoms of a bad camshaft, how much replacement will cost, and whether repairing it may be an option Aug 11, 2023 · One of such concerns is with its camshaft, more commonly referred to as the “cam. The most effective solution for repairing a bad camshaft is replacing it entirely. Mar 9, 2023 · It elevates a ball higher than the exhaust cam lobe which bumps the exhaust valve slightly open to release compression. Ihear a ticking or tapping sound while the Sep 23, 2022 · What problems can occur with your Polaris Ranger 500? We know the answer and we also know which solutions you may need to cope with these problems. Common Problems With Polaris Sportsman 500 NB: Polaris Sportsman 500 ATVs are sold without any Are you experiencing issues with your Polaris Sportsman 500? In this video, we will walk you through the signs of a bad camshaft, a common problem that can lead to serious engine issues if not In today’s video, Zach delves into the inner workings of the camshaft position sensor, or often referred to as the “CMP”, uncovering its critical role, common symptoms of failure, diagnostic 1. Enhance power and reliability for your off-road adventures. Dec 15, 2013 · That's right . I stopped riding, took it home and when I checked the oil, it looked too light and thin. Feb 25, 2008 · So my predator started bogging down on steep hills last weekend, towards higher rpm's in every gear. Dec 5, 2023 · I learned a lesson recently and wanted to share: Polaris's "Prostar" engines don't have adjustable valves. 25" Sedona Coyote tires 2017 Polaris Ranger 1000XP - Roof and front glass 2018 Kawasaki KLR650 2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up SOLD 2004 Sportsman 600 Twin Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Its real small and sometimes hard to see because it doesn't go all the way across the flywheel, but you can see it. Found worn-out exhaust camshaft Oct 9, 2021 · worn or damaged exhaust cam lobes. 500 change the camshaft. My question is will the cam out of a 2003 fit my 96? Any help is greatly apriciated, Thanks. Put Feb 15, 2013 · I have a 2000 sportsman 500 RSE with the worn out exhaust cam lobe worn out issue. 2004 Model The 2004 Polaris Ranger has a bad Aug 7, 2015 · 2001 Arctic Cat 500 manual shift. The same goes for the exhaust lobes and valves. Negating all of this work in the process. 006, inspected the cams May 9, 2020 · Hi I just got an Polaris sportsman 500 4x4 ATV the other day. The camshaft lobes, which ride on the engine’s lifters, are responsible for this movement. I was wondering if anyone else is having a simular Nov 27, 2019 · Buy NICHE Camshaft Assembly for Polaris ATP Big Boss Magnum Ranger Scrambler Sportsman 400 500 3085855 3086212: Camshafts - Amazon. Then clean everything up, paint and make it look new Jun 29, 2024 · Actually, last year I replaced the cam shaft when the exhaust lobe wore down to nothing, and I may have replaced it then, too, but I may change it out just to be safe. I'll show you how to replace a head gasket and the proper torque sequence to repair a Polaris 500 May 24, 2022 · When you have your camshafts exposed, check for scored camshaft journals, worn-out camshaft lobes, or any other signs of scratches and damage to determine what condition the camshaft and related components are in. Signs of Camshaft Lobe Damage Pitting on the Camshaft In many cases, pitting on the lobes is due to normal part wear from many hours of operation. Jul 20, 2024 · A forum community dedicated to Polaris Ranger owners and enthusiasts. Found the drivers side exhaust lobe wiped on cam lifter wont pull out the top. It's a common problem with these Engines and can be easily fixed. So bought an oem replacement wiseco piston and a niche cylinder. My first suspicion was an intake valve not seating, I checked my valve clearances-. So if ur going used (OPT on ATVConnection sez its ok) just to use one from a 2001 on up. Found exhaust lobe wiped on cam. com FREE DELIVERY possible on eligible purchases Upgrade your Polaris Sportsman 500 with Quad Logic's Camshaft & Rocker Kit. Polaris Ranger 400/ 450/500 Camshaft Replacement Kit . Mar 14, 2023 · I have a 2001 polaris sportsman 500 ho, exhaust lobe was wore smooth off the cam, replaced the cam and did a valve job, the machine ran good for awhile, then recently it started to slow crank, the starter would hit, then pause, then turn over but slowly. I would like to replace it with a 2001 sportsman 500 RSE HO cam (part #3085855) the standard cam # is 3086212. A cylinder leakage test is the best indication of engine condition on models with automatic decompression. I'll show you the specs. I. Does yous idle OK, mine will, but has no power as you accelerate. Can camshaft Oct 21, 2022 · Something has gotten out of time, the intake or exhaust cam may have got miss orientation compared to the crankshaft. . possibly?: cam chain Jun 8, 2019 · Hi, I rebuilt the top end on a 500 ranger for somebody I know. Anyway I see I can get a caltric camshaft on Amazon for $60, direct replacement for Polaris part number 2203740. Feb 20, 2018 · 2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers 2001 Magnum 325 MOSE 12" rear wheel conversion. Learn how to replace the camshaft on a Polaris 500 Ranger quickly and efficiently with this step-by-step guide. 3. I found the link to the cam replacement thread but i cant figure out how to view pictures Oct 1, 2024 · The camshaft is essential in managing the timing of your engine’s intake and exhaust valves. The piston top is covered with heavy carbon deposits and the piston rings are intact. com FREE DELIVERY possible on eligible purchases Jul 26, 2014 · I own a 1999 sportsmen 500 and believe the cam is junk. Feb 6, 2024 · As the lobe wears, the engine loses power as engine speed increases and will not rev above a certain point. Oct 4, 2012 · kcaves is correct, you'll easily notice a cam lobe being worn out, the lobe (s) will be worn down past the polished area (will look very rough). I've been told this is common in that year. Check all timing marks on the sprockets and crank, compare it to what the manual says is correct. May 22, 2025 · Summary Some of the most common symptoms of a bad camshaft include a lit check engine light, power loss, and backfire in the intake manifold. The HO style grind will work on all Sportsman 500’s but non-HO models would benefit more when using the larger carburetor. Now you've created even more work for yourself because you don't know what your doing. 020" or thereabouts. I can let go of the throttle and it'll settle back to idling. Is the timing chain supposed to ride high in the grooves. Jun 12, 2025 · Polaris Sportsman 500 issues include electrical problems and carburetor malfunctions. I'm Polaris Ranger Years to Avoid It may cost as much as a brand-new, top-of-the-line UTV if you do not know which model year of the Polaris Ranger to avoid when purchasing a new vehicle. Feb 18, 2024 · The piston has traveled upwards and both cam lobes for the LH Cylinder are on their base circles at this point for the LH Cylinder. 95 Pack Size: ea Qty / Unit: 1 Add to Cart May 13, 2023 · Buy AULINK Camshaft (OEM Parts) 3086212 For Polaris Atv Utv Ranger 400 500, Sportsman 400 450 500, Xpedition 425, For Big Boss 500,Magnum 500,ATP 500, Worker 500, Xplorer 500, Replaces 3084898 3085855: Camshafts - Amazon. Has a real shape lobe and rocker arm is worn and has a groove. Apr 11, 2024 · Kickstart your knowledge about camshaft failure with these 6 warning signs that could save you from a major breakdown - don't miss out on this critical information! Nov 27, 2010 · If you have a flat cam on the exhaust lobe, it will pop or backfire thru thru the carb or TB at full throttle. The 'T' mark wants to move due to Feb 28, 2013 · The heat generated at the cam during the failure of the cam lobe, and/or lifter, will distort the cam and cause it not to be straight any more. I will post some pics soon. The microfiche for my Polaris dealer lists this part at 202. My exhaust cam lobe is almost completely wore down and the thing hardly will even get up an go. The intake side of the stock piston and cylinder were scored badly. Part 5247-2 Hot Cams Camshaft Single Cam Retail Price: Your Price $403. Could it be the compression relief valve? How would you check that? Jul 13, 2024 · The decompression ball was damaged so we put a new camshaft in it (Part #3085348) along with a new Exhaust Rocker. Designed for direct installation without requiring a core, it seamlessly integrates with stock valve springs and rockers across numerous models. Oct 10, 2017 · Remove the timing cover and crank the engine to top dead center, ensuring that the cam lobes point away from each other and upward. Owners also report frequent battery and starter problems. after talking to dealer they tell me it will be somewhere around $2000 to fix it. Excluding labor costs, camshaft replacements cost between $50 and $300, depending on the severity of the damage. Mar 16, 2013 · Popping through carb You aren't going to want to hear this, but you asked. and exhaust rocker arm it had no power before. I screwed up and got it out of time. Replaced the starter, one of eBay 1PZ is the brand. I am not sure yet where. The exhaust lobes are gone. I know most people say these engines are noisy but I'm convinced I have cam lobe wear. View and Download Polaris RANGER 500 2018 service manual online. 5L. Lifter moves but wont come out. check the exhast cam lobe. Luckily I mainly needed the cam and exhaust rockers, and could re-use my intake rocker arms. Thank you for purchasing a Polaris vehicle, and welcome to our world- wide family of Polaris owners. This is the perfect alternative to the expensive OEM cam! Replaces Polaris Number(s): 3085855 Learn about Polaris Sportsman 500 cam timing, setting, and cam chain in this video tutorial. Aug 24, 2009 · CDI replacement for fan not working Polaris had a bad batch of C. Here is a video of my machine running. Removed valve cover and rocker arm. Follow manufacturer’s instructions to perform a cylinder leakage test. Apr 24, 2014 · From what i've read the 96-99's can have bad exhaust cams, but not all - min is still original. If the cam turns out to be the problem, you will need to replace the rocker arms. Also for: Ranger 570 2017, Ranger 500 2017, Ranger 570 2018. Oct 27, 2021 · Exhaust cam lobe looks fine to me - I don't believe the cam is the problem - you can tell better if you measure the lift - try to measure how far the valves move - the intake and exhaust will open appx the same amount and the same length of time. Still not the cause of the backfiring This aftermarket camshaft and rocker kit is a direct replacement to the OEM right down to the adjusters. It has 103Hrs on it 1324 miles. See Also: 5 Signs of a Bad Cam Phaser Removing and replacing the cam shaft on my 1996 Polaris Sportsman 500. 1996 Polaris Sportsman 400l , 2002 AC 400 FIS manual shift. May 17, 2014 · Hello everyonenew to this forum and to the RZR. 5 inches long m89. I see flat spots on the edges and the edges are very sharp to the touch. 7,000 miles 30" Mudzillas , 5 degree timing advance ,Web 228 race cam,K&N, AEM wideband, drilled and clipped, Dynojet needle,muffler mod, rear sway bar,Warn 3000 winch, Trail Tech Voyager. Polished Cam Lobes Reduce Friction and Increase Engine Life Expectancy Compatible with OEM Part Numbers Polaris 3086212, 3084910, 3084913, 3084914 Compatible Sep 15, 2023 · So what might be causing these issues? Read on to find out some of the most common causes of camshaft lobe damage. Apr 25, 2007 · Is it possible that the decompressor just got hung up temporarily or that a camshaft could be bent? I am thinking about pressing the gear off of my exhaust camshaft, to remove the decompressor, just to see if that stops the rattle. Also noticed the oil got black pretty quickly. When it starts to fail, several noticeable symptoms can develop. This cam has the same lift and duration to get you running again. Dec 13, 2023 · The 7 symptoms of a bad camshaft position sensor include check engine light, engine stalling, inability to start, rough idle, reduced power, poor fuel efficiency, and increased emissions. did you try to manually operate the pin and spring , just to see if it's working. does your machine sound like this? YouTube - 1996 Polaris Sportsman 500 runs bad. I need to check valve lash on the exhaust valve with the decompression ball on the exhaust lobe. . ” In this comprehensive guide, we delve into the signs that your Polaris Sportsman 500 might be suffering from a bad cam, the repercussions of the same, and what steps you can take to resolve this issue. Got the parts from Power Sports Nation. Jul 3, 2022 · I have a 1997 Sportsman 500, and the cam has worn out. The exhaust lobe isn't really a lobe. 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. My machine has 800 miles on it and the cam is wore out already. 5 inches long washer May 21, 2024 · 2019 Polaris Ranger 500 4x4 midsize. wmv Aug 10, 2015 · I have an 2011 800 XP Ranger. What's the best way to confirm this? Rotate engine and feel rocker/pushrod play? Does the engine have to be Dec 29, 2021 · That is not a check ball - it is a compression release. Did a leakdown test, and got 100% leakdown through the exhaust. Polaris had a recall of these C. Aug 8, 2022 · I working on a 2001 Ranger 500 built 7/26/2001. This ATV also has a continuous variable transmission and a fuel capacity of 15. parts. Look for any signs of pitting, scoring, or excessive wear on the cam lobes and followers. and look at the exhast cam / lifter for enough action. Find detailed parts diagrams for the 2001 Polaris Ranger 500, including schematics for various components and easy identification of replacement parts. Feb 16, 2011 · If you get a good price on a cam kit let me know, I've got a 98, 500 with no exhaust lobe on the cam, does the same thing yours does. Step by step instructions on removal and replacement Jul 21, 2025 · The camshaft plays a pivotal role in engine operation, controlling the timing of your engine’s valves. I was looking for confirmation on whether this was correct, and if it was how do I find the correct OEM part Oct 6, 2011 · I have a 1996 sportsman 500 that the exhaust lobe on teh cam is just about round. At light throttle it will still run marginal. It is out of Warranty. Changed the oil, ran it idle for about ten minutes checked it again and it definitely looks like coolant Jul 22, 2021 · I took all the slack out of the far side of the exhaust cam and pulled the chain tight over the cams so that all the slack was on the intake side. It's so bad it unseated the carb at the rubber intake manifold. Oil Pressure Test A low oil pressure reading can indicate a worn camshaft or other engine problems. It idles fine but has a severe backfire through the carb when accelerating. O. Add to cart Camshaft (OEM Parts) 3086212 For Polaris Atv Utv Ranger 400 500, Sportsman 400 450 500, Xpedition 425, For Big Boss 500,Magnum 500,ATP 500, Worker 500, Xplorer 500, Replaces 3084898 3085855 Save 11% Lowest price in 30 days Add to cart Oct 11, 2010 · Polaris ATV engines use the same technology for years. and it becomes a relly fast clicking noise. My intake valves are tight 005 @ least{my feeler gauges only go Dec 17, 2019 · The exhaust cam lobe on the tight clearance lobe is damaged on the tip as well as the bucket being dished . Any input? Mar 4, 2023 · In this video we are tearing into a 2013 Polaris Ranger 800 crankcase, removing the camshaft balancer gear. Oct 3, 2020 · Some of the symptoms of a worn lobe is hard starting, low idle speed, reduced power when accelerating and progressively louder tappet noise along with the need for frequent valve adjustments. Was told by the Polaris shop manager that the camshaft failed and damaged the rest of engine Why a failed engine at 52 hours? I like the Ranger but will there be another failure at 104 hours?? Has anyone else had this issue??? Apr 20, 2022 · In anticipation of taking on the problem, I got one of these [Camshaft Cam Rocker Arms Gasket Kit for Polaris Sportsman 500 2x4 4x4 1996-2012 | eBay] which is a bit of overkill, I think - but (being chinese-made) it wasn't too, too expensive so I have the rocker arms, camshaft and decompressor and some odd & ends on hand, too. This cam has the same lift and duration to not only get you running again. it make it on idle sometimes but it really makes the clicking noise around low to mid throttle. Oct 4, 2020 · Interestingly, the exhaust lobe wearing out on the camshaft is responsible for the restricted acceleration of the Polaris 500 90% of the time. Mar 14, 2012 · My ranger 800xp started running rough missfiring engine always had some lifter noise randomly,under 700miles,turned into a clacking noise . I just wanted to know if anyone else has had this problem and May 1, 2007 · Chances are the exhaust lobe is worn down and not allowing the exhaust to escape, thats why it pops through the carb when the intake valve opens. Help! What am I missing. Aug 3, 2008 · So i have noticed that there is a oil leak coming from the top of my motor somewhere above the exhaust header. Sep 28, 2016 · Where is the best place for a new camshaft for a 2000 Polaris Sportsman 500 RSE? I figured some of the quad owners on this forum have probably bought them before as this is a common problem on the Polaris 500. May 17, 2020 · Discover Common Signs your ATV needs a valve adjustmet, we cover the symptoms and the valve adjusting procedure and the tools you'll need. Designed for direct installation without requiring a core, it seamlessly integrates with stock valve springs and rockers across Jan 29, 2022 · Hey guys I've been in denial about the noise my engine has been making on my 2012 Ranger 800XP. ssug buvexg qtdbip cpi kob lylj mkbu othbtrwz udhjx uffbby