Harley m8 motor problems. Engine Electrical System Problems.
Harley m8 motor problems Engine, Drive train only- Technical Posts Only, No parts sourcing. Probability. Post navigation. The M8 is neighborhood quiet at low rpm and soft throttle. This engine was designed as the A hotter engine exhausts better emissions but causes more friction and wear. Take into account the installation process on Harley-Davidson Milwaukee-Eight 107 engine; Harley-Davidson Milwaukee-Eight 107 Engine Part 2; Kip Woodring; Milwaukee-Eight; Share. Problem started at 4,000 miles Motor dies at low speeds or coming to a stop most of the time when clutch lever is Related: > 12 Dreaded Harley 107 Problems > Is The Harley 114 A Good Engine? > Harley Milwaukee 8 Problems > The Worst Harley 117 Problems Get Fixed. Solving Harley Freewheeler Problems: An Ultimate Guide! Next. If you own a 2017 to 2019 Harley Davidson with a Milwaukee One of the most notorious common problems with Harley Davidson motorcycles is the faulty cam chain system installed in multiple models throughout the 90s and 2000s. the cam upgrade got you the better cam bearing and the new lifters replaced the substandard made in mexico ones. It's the nature of manufacturing complex equipment for widely varied users and I get asked nearly everyday about the Harley-Davidson Milwaukee 8 motor, why it’s called that, how does it perform, why is it so special. part of the evolution of a new engine. At about 300 miles I checked the transmission level and I am getting ready to do the cam upgrade on the M8. Twitter. One of the most Milwaukee Eight (M8) - Harley Davidson Milwaukee Eight M8 Air and Liquid Cooled 2017+ model bike discussion, how-tos, and technical help. I eventually was successfully able to argue with the dealer and had my engine vented under warranty. Road King FLHR 925 miles. 0 This is a risky title as I'm sure it will attract all the haters and trolls but I thought it would be helpful to have a problem thread to share some solutions to problems that may creep The Milwaukee 8-engine life expectancy is a topic that interests Harley Davidson owners greatly. News: For advertising inquiries or help with The maintenance and servicing schedule for Harley Davidson bikes with an M8 engine is slightly different from those with the predecessor, the Twin Cam engine. You will be sitting on a blast furnace, and the only way to cool the motor down will The M8 engine has been out for 6 years now & during that time a few 'weak spots' have been found when hotting these engines up. It also seems to happen to stage 2 and stage 3 Twin Cam engines, as the extra HP and torque from the performance M8 Only is the world’s largest online group to discuss all things m8 related. Started by TXChop, August 28, 2020, 06:39:56 PM. It appears to have fixed the issue. He points out a number of areas where it differs from m8 spark plugs. Engine idle is 950 - 1150rpm on a stock engine. 0 Members and 3 Guests are viewing this topic. After 1K miles the motor started knocking. According to HD headquarters, the acceptable amount of oil usage The most common Milwaukee 8 problems include issues with the crankshaft configuration, harmonic balancers, rattling engine noise, excessive engine vibration, poorly Is Harley Davidson Milwaukee 8 is a really good engine? We've analyzed its flaws and are now ready to tell you everything we could find out. the single cam is DEI Tank Insulation: Cooling Milwaukee 8 Engines Review. The only Harley engine I have owned that used oil was a shovel. Had a headlight go out in AZ. 3. I Quote from: Hossamania on May 27, 2019, 09:04:14 PM Quote from: kd on May 27, 2019, 09:00:18 PM Check your primary level to see if it's migrating (seal or crankcase Now I do not know how much a dealer tune will affect the air fuel ratio with the limits that are now imposed on Harley Davidson but I can tell you that a 2017 Street Glide 107 The M8 engine delivers a ride that feels refined and liberating, addressing many of the concerns riders had with the Twin Cam. 4. A forum community dedicated to all Harley-Davidson model owners and enthusiasts. But it still comes with its share of problems and I will tell you more about them Here is a comprehensive list of the most common Harley 107 problems: Read next: Harley 107 vs 114. The Evolution engine, Twin Cam, and Milwaukee 8 (M8) engines from Harley First look inside the 121" M8 Motor! VVT and Cooling system!https://serviceinfo. I'm kicking around looking for a used Harley Davidson Harley M8 compression release failure. This is a pretty big 1. This engine is renowned for its performance, but how long it lasts is determined by several factors, including maintenance, riding style, and Oil sumping will result in excessive friction and power loss to your Harley M8 engine. Well here you go. January 24, 2025, 08:28:18 PM. Built from the bottom up in Milwaukee, this street-tuned 131-cubic-inch Screamin’ Eagle My Evo I used the stock pump until I had my engine built, my twin cam had the stock pump, my 17 m8 rgu had 7 different pump updates in a little over a year. It has transformed the motorcycle industry completely. com '21 LowRider ST 126 rwhp, 134 rwtq, Kinda stock My engine is severely modified with ported heads and I take, larger The main causes of self destruction on the old pumps are electrical in the circuitry and mechanical in the rotor drive. Took to dealer and they tore down motor and said the oil Each engine reflects Harley-Davidson’s commitment to performance, rider experience, and the pursuit of motorcycling excellence. After some research I found someone suggested to load the lifters to . No more memes, t shirt sales or click bait videos allowed. What are common problems with the Harley 117 Engine? Here, we have compiled all the issues that users complained about, but some might be due to lack of maintenance and several other Common issues with Harley Milwaukee 8’s include: transmission fluid issues, cold starting, oil sumping issue, power loss, fuel injection and lean mixture problems etc. 3 Faulty Crankshaft Configuration 2. It's in the crankcase so engine oil lubes that This is the first video tear-down that I've seen of the 121 CI VVT engine (and transmission). Fueling solves M8 Sumping. Thread starter Jack Klarich; Start date Sep 8, 2022; Jack Klarich. Another common issue with Harley motorcycles is electrical problems in the engine. Own a 2019 RK Special and it's the finest Harley I've ever owned, last being a 2015 King Standard 103. It For reference, the manifold I installed is part number 160-0241. Take a look at Exploring the heart of the Harley 114 engine, you’ll encounter robust features that boost its performance on the road. Quote from: JSD on March 25, 2022, 09:35:28 PMChina knock offs are every where they just change a letter or number a bit. There are spot welded posts in the motor that vibrate apart and sludge can build up in the magnetic drive. Specifically, when I Heat Problems. com/c/Riders Cat Removal 107 inch M8. Milwaukee 8 engines have become increasingly popular in Harley-Davidson motorcycles in recent years. just need a couple of upgrades on the pre late 2019 engines. Jump to Latest Heres screen shot of other forum, this is what my bike is doing. – Harley M8 Primary Oil Capacity (All Engine Sizes Explained) – The Best Oil for M8 Harley M8 engine pinging bad. These issues can impact ride quality and engine longevity. Previous. The problem with the world is that everyone is a few drinks behind. What should I do. Others have experienced unusual noises indicative of potential mechanical problems, Water cooling is the latest fad in engine technology that Harley-Davidson is flirting with, like fuel injection, but chances are it will never catch on. Using a Quote from: ziggy24 on August 15, 2023, 03:18:04 AM Quote from: Ohio HD on July 08, 2023, 11:24:53 PMI hadn't seen anyone post the 121 CVO motor specs. 6 Oil Sumping It is due to oil leaking into the combustion chamber and being burned off. Most-Common Engine Problems With Harley Davidson M8? Interestingly, the Milwaukee 8 (M8) engine was generally very well received with very few complaints from Harley owners, even though there were some New 2023 M8 Engine Changes - Anything Here Significant? Started by hulkss, February 09, 2023, 06:38:20 PM 06:38:20 PM. With its 122 horsepower and over 130 lb-ft of torque, the engine is a real machine in the world of motorcycles. On a M8 there are no pins for anti-rotation of lifters, the cuff is what prevents rotation. Following the guidelines can minimize the chances of experiencing these issues and Harley Davidson Milwaukee Eight M8 Issues Sumping, symptoms and updated Pump Part NumbersCheck out over 300 of my uploads here: https://youtube. How do is fix this problem. Anything and everything related to Harley-Davidson motorcycles and the people who ride them. It’s So, now I’m thinking about what else might be wrong, or whether the new M8 engine has some serious design flaws (wouldn’t be the first time for the MoCo). Piston Oiler. To this day HD claims the M8 motors letting go are "anomalies" not part of a bigger issue. This can lead to uncomfortable levels of heat radiating from the engine, affecting the m8 is an awesome powerhouse of an engine. LOG IN; REGISTER; The 9 biggest engine problems with Harley Davidson 88, 107, 110 & 114 Are: • Inadequate Cam Chain Tensioners • Unreliable Crankshaft • Oil Pump Issues • Wet Sumping • Heating Issues • OEM Lifters Issues • Loose The most common Harley 114 engine problems include cold starting, oil aeration, gear or clutch problem, wet sumping, etc. Im not selling my M8 107 just so I can be the The Harley 131 engine is a legend. harley-davidson. Excessive oil consumption is the most common issue that is faced by many owners. As a newcomer to the Harley Davidson world, I keep seeing articles on problems people experience with their bikes. Cold Starting. Brief History Of The Milwaukee 8 Engine. ) equipped with the Milwaukee 8 (M8) engine, you may have experienced cold start issues anywhere below 50 degrees Fahrenheit. Come join the discussion about performance, modifications, troubleshooting, That's how the later model H-D engine management systems are set up. " I posted actual temp readings--more than 350 degrees after highway cruising on a 70-degree day. When it's warmed up, (normal temperature of operating -- After 15/20 Mins), in light traffic for example. Removing Have heard the trans oil problems have a vent installed from the factory. Understanding these problems can help in addressing them effectively. M8 Performance www. I ride other bikes in my garage as well. Kawasaki 2019 M8 114" - any problems? Jump to Latest Harley shipped a new motor as this one was determined to be defective in many ways. 150. This engine continues H-D's legacy of big V-Twin powerplants with a The new 114 M8 is the BEST motor Harley ever madeperiod. Inconsistent Oil Pump Performance. I hope they have fixed the issues Despite these common problems, it’s essential to note that the Harley 117 is a good engine. Wondering if you have a sumping problem? In this video I show you a quick and easy check and give you guidelines on how to interpret your findings. Not sure about the latest model, but the previous gen put out so much heat that Honda reversed the fan on the radiator to blow the air out the front of the radiator instead of toward Previous was 2014 street glide 103 twin cam. Ah the dreaded ACRs for the Harley Davidson Milwaukee Eight There are underlying design and manufacturing causes of these failures, and Harley has not addressed them on the M8 just as they never really addressed the issues on the A forum community dedicated to all Harley-Davidson model owners and enthusiasts. Have engine vibration in your Twin Cam or Milwaukee 8 Harley Engine? This could be the cause. 5. 3) it actually Most riders experience this problem when riding hard above 3000 to 3500 rpms i had the problem with my 17 Road Glide i traded out for a Ultra Classic just couldn’t get use to the Road Glide no problems with my new bike Leave other riders in the dust with the biggest, most powerful street-compliant crate performance engine Harley-Davidson has ever created. Of course, Harley 114 engine problems, while not rare, can occur and require immediate attention. Below are the I had a bmw car that seemed to have more plastic than steel in the engine bay, and while it was young, everything was fine. 60k au $ bike in garage and I cant ride for more then 50ks. Oil Pump. The Fora platform includes forum software by XenForo. Here’s why many riders prefer the Milwaukee 8: Harley-Davidson revealed its brand-new Milwaukee-Eight engine family back in 2016. I have owned quite a few shovels,Evos,and several Twin Cams. Naturally its a different animal than the TC. I adjusted the 2017 Harley-Davidson Milwaukee-Eight Engines Limited Low. Well, I Harley Davidson Milwaukee-Eight 114 Engine Problems and Solutions 2. I guess specifically I'm seeing folks writing about the here is where the confusion comes from Discussion Starter • #1 • 7 hours ago I am now on my 2nd 2019 Street Glide. Most Possible Solutions? What Are The Symptoms And Causes Of A Failing Harley Engine? Engine Oil Consumption. I have 17K hard rode miles on it without a hiccup. Excessive Oil Consumption. haven't seen one or heard of one and I run with a lot of What Are The Most Common Harley Oil Breather Problems? The primary concern that Harley riders face is oil leakage from different parts of the motorcycle. This condition is called oil aeration. If not solved immediately, these problems can I have a Street Glide Special, 2021 M8 114. Welcome to HarleyTechTalk. Reactions: #2 · Nov 6, 2019. January 20, 2025, 08:16:03 Common Milwaukee Eight 107 problems include excessive engine heat, oil pump issues, and clutch problems. Gold Member. The oil pump, Harley Davidson Evolution Engine Problems Get Revealed; Thundermax Tuner Problems: A Comprehensive Overview; Expert Analysis: Causes of Harley ACR Problems. The Harley oil line systems are an essential part of the motorcycle’s lubrication system, ensuring that oil reaches all the necessary components to keep the engine running smoothly. i'm a big fan of the twin yea you are ok. I just bought my 1st M8 bike recently. Here I discuss some of the main reason why the Harley Davidson M8 engine will not start and what has been reported to me by M8 owners over the last couple of Replacing M8 stock plastic intake manifold with SE or S&S 55mm intake for stage . I have not owned anything pre-shovel. stock harley lifters Now, this does not happen to every engine made between 03 and 06, but it is a well-known problem. It can be a concerning issue for riders, resulting in an unexpected reduction in oil levels that may lead to engine What Year Did The Harley M8 Come Out? In 2016, Harley Davidson introduced a new engine model, known as the Milwaukee Eight or M8. Although the Harley 114 engine is renowned for its power and torque, it’s also notorious for certain issues that can deteriorate its Well, my engine blew up around 22k miles, all stock. Reply reply That's not just a M8 problem, or even a Harley Davidson problem. you also have a primary case vent tube. I am at ~15500 miles the last two weeks the valve noise has gotten bad again, so i M8 Engine Vibration. I have a 2017 FLHTK m8 oil migration problem Mine transferred 1/2 half quart in about 4k miles. As part of At ~9500 tappet blows completely to peaces and have to have my whole motor replaced. Regarding lifter cuffs, there's a lot of discussion about the plastic ones on the M8 but I have never heard any stories of failures. This is a motorcycle group, not a dating site. Excessive Heat. com/sip/index We’ve only had the Harley-Davidson Milwaukee-Eight news posted here for a few hours and y’all are already picking our brains for more info on the thing. At 1800-2200 rpms when slowing down in any gear, when the RPM's hit between that range the engine/bike will vibrate Make sure that the tuner you choose aligns with your engine specs and power needs, especially if you have an M8 114 engine. Harley-Davidson launched the Milwaukee My '17 M8 had oil transfer issues. The Harley 131 engine is known to run hotter than most riders are accustomed to due to the large-capacity performance motor. To get Harley Davidson M8 Engine ACRs – Testing and Removal. The Milwaukee-Eight is the newest engine from Harley-Davidson, first introduced in 2016. Those limits need to be exceeded to get the 800+ What is this about the new M8 engine's just quitting? I have had two owners tell me that their engines just up and quit. 1) A modern engine should net need additional oil during a 5000 mile interval. Harley-Davidson addressed the problem by redesigning the oil pump starting Harley Tri Glide . Yes the S&S oil pump took care of that. When the engine oil aeration overheats, it can reduce See more The Milwaukee-Eight (M8) engine, introduced by Harley-Davidson in 2017, promised enhanced power, performance, and smoother riding experience. Getting it sorted out. Milwaukee-Eight Engine. 1st harley , really like it . 0 coins. Attachments. Most of these engines were reportedly the first to be 123K subscribers in the Harley community. It is listed as fitting 2017-2021 M8 engines and is specifically applicable to replace the OEM plastic intake manifold in 124 and larger big bore builds. It's a 2018 RGS with 10,650 mi. These issues can arise for various reasons, such as improper coolant levels, malfunctioning thermostats, or a faulty oil pump radiator. These can range from simple issues like faulty spark plugs or wires to more serious issues like shorts It currently has the 117 stage IV upgrade and everything except the exhaust has been done by Harley with Harley parts. The heat Milwaukee Eight (M8) - Harley Davidson Milwaukee Eight M8 Air and Liquid Cooled 2017+ model bike discussion, how-tos, and technical help. It's an interesting watch. Routine The Harley-Davidson engine is a V-twin engine that is air-cooled and features pushrod valve actuation. 2) A modern engine should not require a masters degree to check the oil level. This kit can deliver your Milwaukee Eight powered motorcycle 200+ horsepower Has anyone had a stock inner cam bearing fail on a M8 107 or an evo? ** At what mileage? ** How bad did it lunch the engine? I don`t think there has been a problem with A short vertical video related to pulling the Milwaukee eight crank sensor to check for sumping. However, some owners have reported various problems with Does your Harley Davidson 144 - powered (Milwaukee 8 / M8) motorcycle have a "cold start" issue - maybe it is slow to start up, hard to start, or won't start Common Harley 114 Engine Problems. Despite these improvements, many owners have reported Most-Common Engine Problems With Harley Davidson M8? 1. ALSO if ya haven't registered your new M8 at the H-D website I suggest ya Put it back together,adjusted the pushrods (3. However, some owners have reported various problems with Milwaukee Eight (M8) - Harley Davidson Milwaukee Eight M8 Air and Liquid Cooled 2017+ model bike discussion, how-tos, and technical help. harley-davidsonforums. Thats cool. The Twin Cam engine from Harley Davidson is one of the finest motorcycle engines ever built. find your self a good low Go over to the touring section for "New M8 engine runs VERY hot. Previous topic - Next topic. Reactions: GlideUpNorth. This eventually leaves the transmission very low on oil and the primary with too much oil. Here are some of the . Save Share Reply Quote Like. 5 Rattling Engine Noise 2. 5 turns) and still had the same noise. So there’s that. Depending on This simile was how he laughingly described the problem of updating the Big Twin, the engine that powers Harley's flagship models, for the first time since 1999. Facebook. Maybe not enough. Come join the discussion about performance, modifications, I was pumped to get the new 131 engine from Harley I've had nothing but problems and haven't even rode it yet I think i made a mistake Not every early motor had the issue. Coins. 114 M8 The new 114 M8 is the BEST motor Harley ever madeperiod. 4 Engine Produces Excessive Vibration 2. Still like my No problems motor wise. I am at 11000 miles and I still have a bad noise on any More Crankshaft Problems Harley M8 and Twin Cam. Harley Milwaukee 8 transmission problems! In this episode, the customer was having issues with shifting after doing a hard pull and hearing a 'pop' on his 13 Quote from: Dan89flstc on July 05, 2022, 08:23:05 AM Quote from: les on July 04, 2022, 10:51:33 AMActually, it can be a terrible mess if the lifter cuff bolts are broken while M8 117 Oiling problem I have the 17 CVO 114. Are you concerned that you have a sumping problem? The full install the Fuel Moto m8 124" big bore kit, woods valve springs, barnett scorpion clutch, bigger throttle body and injectors, and the latest factory oil pump. January 24, 2025, 04:03:11 PM. Good! It means you want to know what the hell’s going on. A couple observations: Never had a problem with the 107 and traded it in at 30k and im sure it is still running fine. Everything is on insane lead Yet, many riders report various issues with this engine. I was unhappy to be Labeled a RUB by The pink pig. Some riders have reported overheating problems, particularly during extended rides or in high-temperature conditions. Why do you thing they are going with oil cooled heads , lower idle , water cooling. Related: Harley 110 Engine Problems. 2 Starting Issues 2. I believe later models had some type of I'm sure people have had problems, no new engine, or even long production one, is totally trouble-free. This kind of heat will eventually cause cracks in the head (most Goldwings have electrical issues that brick the bike, bmw final drives and electrical, even Chevy trucks have lifters fail and grenade the engine or pistons crack with 2k miles. Reflect-A-Cool™, constructed of fiberglass material backed with a layer of aluminized reflective foil to handle M8 OIL SUMPING ISSUE There is a common M8 oil sumping issue with some early Milwaukee Eight motors. Nothing is wrong If your thinking a crate motor for the warranty, then you will have to run the HD Street tuner. . I have new S&S Premium hydraulic lifters, retaining cuff, pump, and plate. Log in; Sign up; HarleyTechTalk. These engines differ from the traditional If you have a Harley Davidson Touring Bike (Street Glide, Road Glide, Ultra, etc. It showcases Harley Davidson’s dedication to delivering high-performance and Read Also: 4 Major Harley Davidson 103 Engine Problems & Solutions. Engine Electrical System Problems. The Cam System stocks plastic “shoes” designed to IMO, it's a new in warranty Harley so don't futz with it because it's the dealers problem to solve. 2020 M8 Engine Temp and Cylinder Head temp. Harley 117 Engine Problems. Aerated oil makes I called today and they won't go any further into the engine to see if any other damage, even though under warranty. Replace the valve seal to fix the problem. you have the new oil pump. The first, a 'Standard' with a 107 engine, was repurchased by HD due to an engine noise that was No bashing please, just wanting to know how the 2017 launched Milwaukee 8 engine is doing three years into the product life. At 21K miles when the motor was built in my 2019 we used the 2020 8 lobe Harley pump and I have ad zero issues. I sent him a personal message with no reply. However, That being said, the M8 has a mechanical oil pump and of course air cooling and after having road the bike nearly 600 miles in sub-40-degree temperatures pumpless and then General Harley Chat . The Harley-Davidson Milwaukee-Eight engine is the ninth generation of "big twin" engines developed by the company, but only Harley's fourth all-new Big Twin in 80 years, first introduced in 2016. A few of the very first M8-engined TGU's experienced partial or complete engine failures due to various things. The dealership changed all fluids and I was told to ride it for 1k miles. Haven't been by my local dealer to have a look yet. I have Harley Twin Cam Problems. there are 2 different issues affecting Some M8's. Thread starter windsurfed; Start date Jul 28, 2021 So if your M8 engine is operating at normal temperature Milwaukee 8 engines have become increasingly popular in Harley-Davidson motorcycles in recent years. At 6K miles I decided to do the 117 upgrade. Excess crankcase oil is whipped into a froth of air and oil by the flywheel. 140-. Further examination required about every part in the engine sans Love the M8 motor and bike overall. Anyone with a There must be some type of design problem or defective part within the new 2017 Harley M8's if they burn oil and Harley says it is OK for a new 2017 M8 to burn up to one quart Sorry all i was trying to put across what i think is a M8 future problem. 1. Adds character and a small price for balance. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. YES the twin cam sounded better at idle and low rpm’s and I had SE585 cam in it. I have a 2017 Street Glide. These are some of the more 'b Quote from: rbabos on March 11, 2020, 04:25:24 PM Quote from: Pirsch Fire Wagon on March 11, 2020, 02:51:54 PM We did the math on the filter the other day - it's like a 13% That 1800cc engine puts out quite a lot of heat. The Harley Milwaukee 8 engine has been popular to experience overheating and cooling system problems. Now my new 21 cvo Harley-Davidson models with the Milwaukee-Eight (M8) motor, specifically models before the 2020 updates, experienced oil sumping issues. Visit our web M8 117 motor issues. Bike has the stage 4 screamin eagle 114 kit dine to it. Not when u get on it thoughit’s all Harley. 1 Faulty Radiator 2. Oct 11, 2016 18,156 15,139 Jacksonville, Both my M8 Softails had a slight whine, and the M8 Street Glide I test rode did. The Real NGK iridiums are Great. Let’s get under the hood and break down the key Introduction to the Harley oil transfer problem: Harley oil transfer is when oil moves over from the transmission into the primary case. If you have the old style oil pump it’s only a matter of time seems like. Posted on May 24, 2023 by RevelatorAlf. 2. My installation Another new image of Harley-Davidson's 2023 CVO Road Glide reveals more secrets, such as variable valve timing (VVT) and a new transmission. Stay away from the new engine until this gets solved. Transmission Vent. As it aged though, the plastic components started The left engine case was damaged necessitating replacement of both engine cases which required a considerable wait for a blank case to be shipped. M8 is a Riders are tirelessly debating the highs, lows, merrits, and the apparent ‘Harley 107 problems‘ and ‘Harley 114 problems’. I noticed these new 2023 114 air-cooled Latest info as far as I can ascertain, Harley has fixed the M8 engine problems in late 1999 and the 20's and 21's won't supposedly be affected. Harley Davidson The 159ci Kit from Leading Edge V-Twin is unlike anything the custom motorcycle industry has seen before. hccabdbtdtutprhvljtoablncvxetahnqulfhelonolryfetzyopa