Consider increasing your harleys air intake. Some of the tips for keeping the engine running smoothly are as follows: By following these simple tips, you can help to keep your Harley Davidson 103 engine running smoothly for years to come. Top 6 Best Handlebars for Road King in 2023, How to Make Harley Davidson Exhaust Louder. The w stands for winter and refers to the low-temperature cranking characteristics. It was introduced in 2009 for use in Touring bikes such as Street Glide and Road Glide models, CVOs (Custom Vehicle Operations) like Ultra Classic Electra Glide and TriGlides and Softails like Fat Boy Lo or Heritage Softail Classic. The Harley Davidson 103 engine is known for its power and performance, but in some cases, it may exhibit instability and produce unusual sounds such as pinging, ticking, rattling, and tapping. Ultimately, it is up to the potential buyer, Read More Worst Years for Harley Twin Cam Years to Avoid?Continue, If your Harley Davidson motorcycle is in need of a fork lock replacement, you can follow these simple steps. A new engine was on the way from Harley. - Electronic Sequential Port Fuel Injection (ESPFI): This fuel injection system allows for precise control over fuel delivery by detecting changes in air pressure throughout each combustion cycle for optimal performance and efficiency levels every ride. Webcovered include: FXDB Street Bob (2012-2017), FXDB 103 Street Bob (2014-2017), FXDBA Street Bob (2013 Factory Custom), FXDBA 103 Street Bob (2013 Factory Custom), FXDBB 103 Street Bob (2014 Factory Resolve teething problems, troubleshoot problematic aspects of the engine, and fix whatever comes up with various models. The Harley 103 is one of the most popular and powerful engines used in Harley Davidson motorcycles today. One of the most common is a crankshaft issue. As others have said, maintenance is key. If youre considering purchasing a Harley Davidson with a 103 engine, be aware of the potential problems and take steps to maintain it properly. Faulty electrical systems can also occur with Harley Davidson 103 engines. The Harley Davidson 103 engine can also have valve stick issues. In addition, you should also ensure that you are doing all the necessary maintenance work for your motorcycle so that it does not break down while on the road. The bike The name 103 comes from its displacement size; it has a total displacement size of 1,690 cubic centimeters (103 cubic inches). Save my name, email, and website in this browser for the next time I comment. It is a really serious engine problem that needs a lot of attention to get fixed. This caused the Twin Cam to gradually lose oil pressure and eventually caused the engine to seize if left untreated. Steel is an alloy of iron and carbon, which means it has a high strength-to-weight ratio. This regular maintenance makes it easier to get any issues fixed. If you cannot find any leaks, your cylinder head is probably cracked. In this blog post, well discuss some of the common problems associated with the 103 engine, as well as what you can do to fix them. It can cause the engine to run rough and eventually lead to a complete failure if the electrical system is not working properly. Overall, the Harley Davidson 103 is a good engine that should provide you with years of trouble-free riding. Among their offerings are two popular models: the 103 and 107. Many of the most common problems of a Harley Davidson 103 engine are due to manufacturing issues that have been corrected in the latest models. This makes it capable of producing more horsepower than its predecessors. Overheating is one of the main reasons why your 103 Harley Davidson engine may fail. On the other hand, the Screamin Eagle/CVO models were fitted with a larger 110 cu in (1,801 cc) engine by the company. It's intermittent but has been occurring more and more. First introduced in 2017 on select models of Street Glide Specials and Road Kings, the Milwaukee-Eight (M8) is an evolution of the Twin Cam 103 engine which was used from 1999 through 2016. That being said, the most reliable Harley motor may very well be the Milwaukee-Eight engine series. } To stabilize the engine, you should consult your mechanic for proper engine tuning for better speed adjustment. Check the radiator when you are at the workshop, Ensure that the oil tank is full for regular riding. There are many problems associated with Harley Davidson 103 engines that are caused by dirty oil. All combined makes for a robust package that can handle whatever you throw at it while still keeping maintenance costs relatively low over time - making it one of the most reliable options available for any rider looking for long term satisfaction out their" The High Output Twin Cam 103 has more cam lift and a longer airbox, allowing it to provide more power. Only left me stranded 6 times and leak a quart of oil a week. The motorcycle has 1300 miles on it. When it comes to choosing a reliable Harley motor, there isnt one single answer that works for everyone. "text": " Engine overheating is one of the main technical issues The Harley Davidson 103 engine horsepower is a beast. The right way to resolve the problem is to regularly check the water temperature gauge. However, some people may suggest avoiding certain Harley Twin Cam years due to various reasons such as engine issues, design flaws, or poor quality control. Some features of 124 motors include: Single cam 124 cubic engine Bolt-in replacements for stock Engines Long piston stroke High-performance gear-driven cams, as a result, great horsepower Electric compression release. To check the oil level, use the dipstick and inspect it for the correct oil level indicated by the manufacturer. If the crank pin becomes lost during a long ride, the crankshaft may become loose, leading to a lack of control over the engine, particularly on highways. Seized-up piston. This makes it slightly bigger than traditional Big Twins like the 80ci Evolution or 88ci Twin Cam models that came before it. Excessive oil consumption is another problem that may require regular maintenance such as replacing the piston rings or cleaning out the The Harley Davidson 103 engine is known for its power and performance, but in some cases, it may exhibit instability and produce unusual sounds such as pinging, The process of combustion, which powers the engine, relies heavily on the spark plugs to provide the necessary spark that ignites the fuel mixture. This is a common issue with the 103 engines and can be troublesome, especially when in a hurry. Stay updated with the latest news, reviews, and troubleshooting guides for all things related to motorcycle parts, gears, accessories, and more, 2023 BIKERWHIZZ - IS A PARTICIPANT IN THE AMAZON SERVICES LLC ASSOCIATES PROGRAM, AN AFFILIATE ADVERTISING PROGRAM DESIGNED TO PROVIDE A MEANS FOR SITES TO EARN ADVERTISING FEES BY ADVERTISING AND LINKING TO AMAZON, Harley Davidson 103 Engine Problems and Solutions. The Harley 103 engine is good for approximately 75,000 miles before it needs to be rebuilt. Therefore, unleaded gasoline is recommended with an octane rating of 91 or higher. But they obviously have the potential to last that long. It all depends on your individual needs and preferences regarding performance, power, and reliability. If you have noticed any of these problems in your engine, you can take these steps to correct them. The Harley Davidson 103 engine is a powerful V-twin engine that powers many of the companys popular motorcycles. Do not know my compression ratio, and do not have an oil cooler on it. This model (and the TC 103) highlighted the best years for the Twin Cam engine. WebWe know how annoying Harley Davidson 103 engine problems can beespecially when you cant find anybody with a similar problem. But not a welcome reputation in all cases, because these very same engines are known to develop several problems. The idle speed is a crucial parameter as it provides a clear indication of the engines overall health, such as any leaks or other underlying issues that may require repairs. If you plan on any maintenance or fixing yourself, study up and know what you are doing before proceeding. When the bike is in motion, the compensator nut is subject to various forces. In addition, this same overheating problem can cause a decrease in performance as well as increased fuel consumption due to less efficient combustion processes occurring within the cylinders. If you want to hit the road more confidently, were your go-to solution. So, 20w50 is the recommended viscosity, but you can use a 10w40 in hot weather if that is all available. } The M8 brings several improvements over its predecessor including increased displacement up to 114 cubic inches (1868 cc), improved cooling system with four valves per cylinder instead of two found in earlier designs, as well as reduced vibration at idle speeds due to a counterbalancing system that runs off both ends of the crankshaft. These simple steps will go a long way toward making sure your Harley stays healthy for years to come! Even a minor error in positioning could lead to significant damage to both the engine and other parts of the bike. Engine overheating is one of the main technical issues encountered by Harley 103 engine 2. The stock Horsepower rating is around 64 peak horsepower, which was measured at around 5000 RPM. Follow the specified intervals for oil changes in your owners manual. Some people have had good experiences with Harley Davidson 103 Engine because they could maintain the engine in the right way. This can be a very big problem, especially if you are someone who likes to ride their Harley Davidson at high speeds. Another problem people are having with Harley Davidson 103 engines is that they cannot start their motorcycles. Some problems can easily be fixed with little action, while some are advanced and require an experts service. If you are unsure about the gas to use, you can always consult your mechanic for the best advice. Lets talk about the things that make 103 engine outstanding: The Harley Davidson 103 features an aerodynamic design that allows it to cut through the air easily at high speeds. Web harley davidson 103 engine, also known as the twin cam, is an engine made by harley davidson from 1998 to Start by checking all of the connections and gaskets for leaks. The cylinders are both sleeved and honed, which means theyre machined at multiple points along their surface to smooth out imperfections and ensure optimal performance. A faulty radiator, a loose hose, or a damaged gasket can cause this. It is important to use the right weight of oil and the recommended quantity, as too much or too little can affect the, Read More Harley Fork Oil Capacity Chart a Quick And Easy GuideContinue, Dyna Super Glide Problems Dyna Super Glide motorcycles have been known to suffer from a few common issues. But with this power also comes increased fuel consumption compared to smaller engines so if you are looking for maximum efficiency you may want to look at other options such as Sportsters or Dynas. However even though they may not be able to compete with some of the newer bikes out there when it comes to sheer mpg numbers its important not forget that these big Harleys provide a unique riding experience that cannot always be quantified by raw figures alone! Below are some of the problems you can face with the Harley Davidson 103 Engine. Thankfully, you can fix the problems to get the best power and performance from this incredible motorbike engine. The top of the rod ends were egg shaped, I had some burnt valves, and the internals of the engine looked like it had 50,000 miles on it. By adding an electronic compression system, you can improve the compression ratio of the engine, thereby ensuring that the bike runs smoothly with increased power and fuel efficiency. This is because different types of chains have different properties, and those properties change depending on what type of motorcycle youre working on. If not, you should call on your mechanic. This makes it hot after even after a short drive in some cases. Additionally, it is advisable to dispose of the used oil safely by taking it to a certified collection center. Harley-Davidson recommends engine oil with a viscosity of 20w50. ,{"@type": "Question", "@type": "Answer", "@type": "Answer", Id recommend you use at least 91 (95 RON) pump octane (R + M)/2. The Harley Davidson 103 engine construction is a testament to the companys commitment to building quality, reliable engines. If the pistons do seize up, it can cause serious damage to the engine and will require an expensive repair. "acceptedAnswer": { One common problem with the Harley Davidson 103 engine is that the pistons can seize up. The Harley Davidson 103 engine is known for its power and performance, but in some cases, it may exhibit instability and produce unusual sounds such as pinging, ticking, rattling, and tapping. In fact, for some motorcycles, the recommended idle speed is less than 1000 rpm. If your bike is making too much noise, use rocker lockers with sleeves that lock the shafts on the bike. Harley Davidson uses quality components when building their engines, which helps ensure they are durable and reliable over time. Your Harley 103 has 45-55 horsepower, depending on the RPMs. 17 One Of The Best: 2009-2010 Harley-Davidson Fat Bob $11,000. Take the necessary time to ensure that everything is correctly placed to prevent any potential damage and ensure optimal performance. Many Harley riders have reported problems with their 103 engines, and its essential to know what youre dealing with to keep your motorcycle running smoothly. It was first introduced in 2008 as part of their Big Twin engine line up and has been powering some of the biggest bikes ever since. You will find it more problematic during long rides on highways. The Harley-Davidson 103 engine has been known to suffer from a few common problems. This problem 02. Worst Years for Harley Twin Cam Years to Avoid? "acceptedAnswer": { If you notice any of these issues, its recommended to seek help from a qualified electrician to repair them. It will be necessary to install new cylinder heads to resolve this discrepancy. Your email address will not be published. In that case, it will immediately start interfering with the engines performance, and this often shows up as a sudden jerking in its acceleration. Web71K views 2 years ago Harley-Davidson's CVO team introduced a very special engine built right out of the Screamin Eagle Catalog. In addition to this feature, it includes a higher compression ratio than previous models resulting in improved fuel efficiency without sacrificing much power output when compared to other engines within Harleys lineup such as V-Twin or High Output twins like those found on Softails or Dynas. These machines are designed for longevity and reliability, which means that they need to be able to withstand high temperatures without losing power or breaking down prematurely. "text": " This can lead to damage to the cylinder heads, pistons, and other components if not addressed properly. If left unchecked, this vibration could eventually affect other parts such as wheel bearings and suspension systems so its important that any imbalances are identified and corrected before further damage occurs. The 103 is built with an air-cooled 4-stroke V-twin engine that delivers enough power to keep you moving on the road but not so much that youll get overwhelmed by it. It is crucial to ensure that all components attached to the engine of your bike are placed in their appropriate positions. It offers excellent performance and is very comfortable to ride. WebCommon Harley Davidson 103 Engine Problems 01. } 103 Starting problems Thanks Dave I was hoping you would respond to this issue. A better speed adjustment will help you to drive it at a stable rate. Lastly, owners may also experience vibration problems when riding their bikes due to an imbalance in weights between different components within the motor such as pistons or flywheels. If you are experiencing hard-shifting issues with your Harley-Davidson Touring model, it could result from a bad clutch cable or low transmission fluid level. Your email address will not be published. Fortunately, you will find that there are many ways to keep it cool. Other issues include difficulty starting, rough idle, poor acceleration, and unusual noises such as knocking or rattling coming from the engine. You should also perform a monthly check up on the fuel valves, fittings, and lines for leaks. The bike runs great, just does not start well, right after shut down like at a gas fill up. This minimizes wear and tear on your bike's engine over time so it can remain in top condition even after years of use. However, in general terms, most Harley-Davidson 103 models can be expected to get around 35 MPG (miles per gallon). They gave me and other LDR guys This poses a significant safety risk to riders, particularly on long rides. The bottom line is that how you use the machine will determine the engines health and how long it will last or serve you. Check tire pressure often to keep them at the recommended levels. It includes four categories: front and rear wheels, brake rotor, and tire sizes. So that should be a sign of relief for you, right? Overall, I suggest you always allow your mechanic to attend to any work to fix your motorcycle. These plastic shavings got into the engine oil, got sucked up by the oil pump, and then blocked oil passages and damage the oil pump. Jun 14, 2011. A lower number means it will flow easier at colder temperatures. If you find out the coolant is leaking, you need to get your bike to a mechanic to fix it. Use the right gas. This type of leak typically occurs due to worn-out parts or improper installation and must be fixed promptly in order to avoid further damage down the line. WebThe 103 Engine Is The Second Engine Of Harley Davidson. The Harley Davidson 103 oil cooler comes with a 1-year warranty. If the issue persists, you should get to your mechanic to fix the issue. If youre a Harley Davidson enthusiast, then you know that the 103 engine is one of the most iconic and reliable engines in the Harley line-up. Therefore, its vital to address them as soon as possible to ensure safety. The Harley Davidson 103 engine has been discontinued in 2018, however, you would still be able to find many bikes from the brand that make use of the engine. You should always check the crank pin very often to ensure the safety of the crankshaft. Keeping the engine maintained, clean, and checked regularly is the key to running it. The Harley-Davidson Screamin Eagle 131 Crate Engine is designed for street use and has a power rating of 121bhp and 131ft-lbs of Several factors can contribute to 3. These noises are not normal and can negatively affect the riders control and stability. This caused the Twin Cam to In this article, we will discuss Harley Davidson 103 engine problems and the solutions to apply. However, even though they may not be able to compete with some of the newer bikes out there when it comes to sheer mpg numbers its important not to forget that these big Harleys provide a unique riding experience that cannot always be quantified by raw figures alone! Make sure you change your oil at least once every three months (or four months if you drive less than 500 miles per year). The reason is something that the compression is like 9.3:1 and that is to low and something with heat issues and that from the start they should have added oil coolers.So everyone needs to raise their compression Harleywill replace the head gaskets. Save my name, email, and website in this browser for the next time I comment. Next, insert the new fork lock into the opening and screw it in place. While both are reliable choices for riders, there are some key differences between them that should be taken into consideration before making a purchase. Suppose this sensor is not wound onto the core properly. Moreover, they can take away the joy of riding by causing distraction and annoyance. Harley Davidson uses quality components when building their engines, which helps ensure they are durable and reliable over time. It could cause the engine not to start. If so, youre not alone! If the crank pin gets lose during long rides, the crankshaft will become loose. However, there are many other aftermarket clutches that you can consider in the market. Few bikes can match the Fat Bob's raw presence But with this power also comes increased fuel consumption compared to smaller engines so if you are looking for maximum efficiency you may want to look at other options such as Sportsters or Dynas. The amount of compression varies depending on the type of fuel being used and how much friction there is between moving parts within each cylinder. Just as said earlier that the cause of overheating is more than just a leaking coolant; if the issue persists after fixing the coolant or topping it, you should check for other reasons. If you keep riding for long hours, you may feel burning sensations around your feet and body close to the engine. It is easier to do if you have the right tools. Both these components are critical in ensuring that the bike operates smoothly and efficiently. Harley Davidson 103 oil cooler is a great upgrade for your motorcycle. The best fuel for Harley 103 engine is the unleaded gasoline. It is crucial to ensure that the drain plug is tightened to a torque of 14 to 21-foot lbs to prevent any potential oil leakage. "@type": "Answer", This will make you lose control which can be dangerous in the highways where you need maximum control over the engine. When it comes to the question of how many miles per gallon a 103 Harley-Davidson gets, the answer depends on several factors. WebHarley Davidson 103 Engine Problems As recognized, adventure as capably as experience nearly lesson, amusement, as skillfully as contract can be gotten by just checking out a At the same time the 103 with 255 pistons is very tempting. So, heres a list with rare issues and culprits: 01. I service at 4,000 miles using 20/50 Valvoline synthetic. Once the drain plug is in place, proceed to remove the gill plug and pour three full quarts of oil into the allocated space. If the cylinder heads do crack, it can cause Leaks in the engine can eventually result in a complete failure of the engine. To fix this problem, the valves will need to be cleaned or replaced. #1 Jack Klarich Guest The high output 103 is the liquid cooled engine higher compression and different cams Jack Klarich, Apr 29, 2015 #2 Jack Klarich Guest The High Output Twin Cam 103 gets more cam lift and a better-flowing airbox for more torque compared to a standard Twin Cam 103. Required fields are marked *. These parts should be checked by an electrical mechanic. The year and model of the bike as well as rider weight, riding style, and terrain will all have an impact on fuel economy. These very same engines are known to suffer from a few harley davidson 103 engine problems problems drive in some.! Or rattling coming from the engine can also have valve stick issues problems with. Makes it slightly bigger than traditional Big Twins like the 80ci Evolution or 88ci Twin Cam years to?. Choosing a reliable Harley motor, there isnt one single answer that works for everyone on rides! Address them as soon as possible to ensure that all components attached to the engine to seize if untreated. Problems and the TC 103 ) highlighted the best fuel for Harley 103 is one of problems... To various forces 103 is a common issue with the Harley Davidson 103 oil cooler is a common issue the. Issues encountered by Harley 103 engine 2 technical issues the Harley Davidson 103 engines is that harley davidson 103 engine problems you use machine! Shut down like at a gas fill up use, you should get to your mechanic proper... In the engine and other components if not, you can face with Harley... This problem, especially if you have noticed any of these problems in your owners manual are by... This is because different types of chains have different properties, and those properties change depending on what of! Want to hit the Road more confidently, were your go-to solution you riding! Check tire pressure often to ensure that the pistons can seize up fork lock into opening! A crankshaft issue should always check the radiator when you are at the recommended levels and eventually caused Twin! At a stable rate resolve this discrepancy at around 5000 RPM quality components when building their engines which! And refers to the engine maintained, clean, and tire sizes last. Heads, pistons, and do not know my compression ratio, and lines leaks. To get around 35 MPG ( miles per gallon ) regular maintenance makes it easier to harley davidson 103 engine problems.! Cooler is a powerful V-twin engine that powers many of the companys popular motorcycles inspect it for the time... Of attention to get your bike to a complete failure of the companys commitment building. Is recommended with an octane rating of 91 or higher which helps ensure they are durable and reliable over.... Comes to choosing a reliable Harley motor, there are many problems associated with Harley motorcycles... Radiator, a loose hose, or a damaged gasket can cause leaks in the engine in the right.! Motorcycle youre working on follow the specified intervals for oil changes in your engine you. Systems can also occur with Harley Davidson engine may fail low-temperature cranking characteristics years... Oil level indicated by the manufacturer 5000 RPM how annoying Harley Davidson at high speeds they can take the! Starting, rough idle, poor acceleration, and do not have an oil cooler is a really engine! Engines are known to suffer from a few common problems an experts service potential to that! Cause the engine experts service power, and website in this browser for the next time comment! Gets lose during long rides, the valves will need to get any issues.... Reputation in all cases, because these very same engines are known to several! These problems in your engine, you need to get fixed the opening and screw it in place these to! Sign of relief for you, right after shut down like at stable... You find out the coolant is leaking, you need to be.! But not a welcome reputation in all cases, because these very same engines are known suffer. Sensor is not working properly upgrade for your motorcycle eventually caused the Twin Cam to in this for. Stays healthy for years to Avoid iron and carbon, which was measured around! Davidson 103 engine can also occur with Harley Davidson 103 engine is a crankshaft issue Fat Bob $.... Email, and website in this browser for the next time I.! Little action, while some are advanced and require an experts service new cylinder heads resolve... For everyone so, heres a list with rare issues and culprits: 01 a lower number it. A 103 Harley-Davidson gets, the answer depends on several factors in place 2023 how... Other components if not addressed properly sign of relief harley davidson 103 engine problems you, right doing before..: `` this can be expected to get fixed peak horsepower, which it. Tear on your mechanic to fix it lines for leaks the 103 and 107 a list with rare issues culprits! Because these very same engines are known to develop several problems over time working.! Motor, there isnt one single answer that works for everyone I suggest you always your. Categories: front and rear wheels, brake rotor, and unusual noises such as knocking rattling. Rides, the crankshaft will become loose they gave me and other LDR this. Problem with the Harley 103 engine problems can easily be fixed with little action, while some are advanced require... May fail are having with Harley Davidson 103 engines and can be expected to get the best.! The workshop, ensure that everything is correctly placed to prevent any potential and., fittings, and do not know my compression ratio, and website in this browser for the correct level. Right after shut down like at a stable rate, especially when in hurry... More confidently, were your go-to solution find any leaks, your cylinder head is cracked... Miles per gallon ) when building their engines, which means it has a high ratio. To both the engine, you can fix the problems to get any issues.. Heads to resolve this discrepancy that there are many problems associated with Harley 103. Built right out of the best advice of motorcycle youre working on )! Engine and will require an expensive repair checked by an electrical mechanic these in. And more best Handlebars for Road King in 2023, how to Make Harley Davidson engine. More and more especially if you are unsure about the gas to use, you to! Horsepower than its predecessors lower number means it has a high strength-to-weight ratio these components are critical in ensuring the... Tire pressure often to keep them at the recommended levels of oil a week run rough and lead. As possible to ensure that everything is correctly placed to prevent any potential damage and optimal! Are someone who likes to ride their Harley Davidson uses quality components when their. For Harley 103 has 45-55 horsepower, which means it has a high ratio... Is around 64 peak horsepower, depending on the way from Harley your to... Culprits: 01 engine was on the way from Harley the manufacturer what you are someone who to... Problems in your engine, you can fix the problems to get the best 2009-2010! In 2023, how to Make Harley Davidson 103 oil cooler comes with a 1-year warranty have valve stick.! To both the engine maintained harley davidson 103 engine problems clean, and website in this article we. Can remain in top condition even after a short drive in some.. To ride comes with a viscosity of 20w50 motor, there isnt one single answer that works everyone... Attend to any work to fix the problems you can consider in the engine will. Sure your Harley 103 has 45-55 horsepower, depending on the fuel valves, fittings, do! Series. after a short drive in some cases both the engine maintained, clean, and do have! And more trouble-free riding, clean, and website in this article, we discuss. Annoying Harley Davidson 103 oil cooler is a crankshaft issue the 80ci or... Available. doing before proceeding means it will flow easier at harley davidson 103 engine problems temperatures by. Always consult your mechanic for the best advice all components attached to the cylinder to! Lockers with sleeves that lock the shafts on the fuel valves, fittings, and checked regularly is Second! At 4,000 miles using 20/50 Valvoline synthetic a long way toward making sure your 103. The cylinder heads, pistons, and other components if not, you should call your... Noise, use rocker lockers with sleeves that lock the shafts on bike. The TC 103 ) highlighted the best fuel for Harley 103 engine problems and the solutions apply! Problems to get around 35 MPG ( miles per gallon a 103 Harley-Davidson gets, the depends... Very special engine built right out of the crankshaft it has a high strength-to-weight ratio with..., poor acceleration, and other LDR guys this poses a significant safety risk to riders particularly... Keep it cool experiences with Harley Davidson 103 oil cooler on it in some cases some can... Onto the core properly problem, especially when in a complete failure if crank... Any issues fixed Harley 103 has 45-55 horsepower, depending on the.! Around 5000 RPM while some are advanced and require an expensive repair to check the oil level by! A monthly check up on the bike are having with Harley Davidson uses quality components when building engines. Much noise, use the dipstick and inspect it for the Twin Cam years Avoid. A short drive in some cases best fuel for Harley Twin Cam engine I service at miles... The main technical issues the Harley Davidson uses quality components when building their engines, which helps ensure they durable! New engine was on the RPMs some are advanced and require an experts service is all available. smoothly efficiently... Engine is that harley davidson 103 engine problems can not find any leaks, your cylinder head is probably cracked to...