Harley davidson exhaust glowing red. It goes from there to a progressively brighter red, then almost a bright pink before finally turning yellowish. 2) being air-cooled they ran at lower combustion temps (hence cooler exhaust gases) than modern, more efficient engines. 1- The engine is running too lean If your motorcycle’s exhaust gasses are becoming hot enough to make the exhaust glow, it’s usually a sign that the engine is running too lean. My pipe started to glow red after 2min pf idling. Some bikes are more prone to it then others, and how hard the bend is off the head is a direct factor. But check the valve clearances anyway, if only for piece of mind. Anyway, when I got to the "Y" section of my pipes right where it connects to the motor, I saw the pipe section that isn't covered was bright red glowing! Has anyone experienced this and should I be concerned? Common Reasons for a Glowing Red-Hot ATV Exhaust So let’s dive into the potential causes of your glowing ATV exhaust pipes. The other night I took my '05 King for a short ride around the 'hood. Read our comprehensive guide for clear, step-by-step troubleshooting tips! You open the hood and see the Catalytic Converter Glowing Red . One possibility on small engines that run a flywheel magneto is that the keyway/key may have damaged itself or sheared off, allowing the timing to go out. I have a CFR pipe And A k&n airfilter. Not enough vacuum is taken away without a load on and it will create a lean condition making the exhaust glow red hot. Dec 16, 2010 · Glowing red pipes, at idle, is normal, especially on an EFI bike. Just out for a ride tonight 55 degrees out and noticed that the exhaust was glowing cherry red where the 2 headpipes come together at highway speed at about 3000 rpm. I took it to my AT that point it's just hot, but not hot enough that things around it start to glow (glow as in show up in the dark from the exhaust light) from the heat. I have a 07 R. Spoke to my mechanic who suggested I open the exhaust up - so I've fitted 12 discs and opened the end cap (I have those end caps that you can adjust with an allen key to open/close). aiso have stage one air cleaner kit but i removed my v. My '04 RK Classic's rear cylinder seems to run very hot. 3K views 24 replies 7 participants last post by Jan-Dirk Oct 3, 2022 Gevarlik Discussion starter 2021 street glide. Your's is an '08 with oxygen sensor, don't those engines run a good deal hotter than earlier V-Rod's? The bike is running great - but I noticed the header pipes (front and rear to varying degrees) glowing red after a night ride. Discover 7 simple reasons why your dirt bike’s exhaust might be red hot and learn easy fixes. If this is a homemade dirt bike make the exhaust pipe routed away from you as much as possible and add a guard around the outside of the pipe. Smoking and cat glowing red hot!?!? What’s going on? Cole Greathouse and 10 others 11 reactions I have a 06 electraglide and when it was stock the engine felt like it was a glow plug between my legs. Have a brand new VRSCDX an went out for a ride came back after about 20-25 miles and front ehaust pipe under heat shield glowingbike still stock is this normal/has anyone else had this issue? Milan, italy 20 september 2025: harley-davidson v-twin engine and exhaust pipes showing polished chrome surfaces, reflecting the road and sky, conveying freedom and vintage style on an open road Macro shot of neon lime technical mesh fabric featuring professional black piping and internal stitched seam detail. 32400 miles lots & lots of extra chrome,I put a bigger cam in. just got my bike running for the first time in 4 years, i rebuilt carb, changed fuel, voltage regulator, and battery but the rear pipe on the rear cylinder is glowing red hot, why? I'll bet most of you (with late model EFI bikes anyway) would see the pipes glowing, not cherry red, but just dull red, if you looked in the dark. Does it have any other issues besides running hot, such as rough running or sputtering? Does red header = boom? Not necessarily, however I certainly would be logging O2 sensor data (WBO sensor if possible) when tuning/concerned about glowing headers (as the OP is). Don't say they are the stock ones now. Has a stage two screaming eagle, la choppers exhaust, under glow lights. . You should fix it before it gets worse, and here is how!. Many stock exhaust systems have dual-wall designs so you never see the pipe that the exhaust is actually flowing into. All matching covers primary Plenty of modern car exhaust manifolds glow a dull red in the dark and that is considered perfectly normal. Now if it's cherry red in the daytime, you have a problem. Check for a rich air-fuel mixture caused by faulty oxygen sensors or fuel injectors. ATV exhaust glows red due to fuel mixture faults or ignition timing errors. Bike has ran great and has been setup like this for 5000+ miles. I get home the the exhaust is glowing cherry red. This (highly likely) means that the ignition timing is out, or the fuel mixture is too lean. Nov 4, 2024 · Here are a few possible reasons for your motorcycle’s exhaust glowing red. 2008 RKC 3350 miles as of today Mobile one vtwin K&N Air filter not a velocity stack just plain replacement filter SE Slip on's Xieds Rode less than 105 miles today and tonight when i went to leave my friends house it started and had Exhaust glowing red, wtf? Jump to Latest 4. I get onto the freeway travelling at 100kph and more after 5km it starts to glow,right where the cat is. Red-hot exhaust pipes usually result from unburned fuel igniting in the exhaust system. I Thought every thing was going ok got a few data samples tweaked the map Why are my exhaust headers glowing red? Our stainless steel wall is only . You don't want to rev any engine to long in neutral that uses a map sensor. This phenomenon can indicate several underlying problems, from improper tuning to exhaust blockages. This article will discuss the most common problems causing the catalytic converter or exhaust manifold to overheat. which toyota engine front exhaust manifold and pipes always get hot quick even more quickly if have taken out the cat and bolted in cat I work at a Harley-Davidson dealership, and for the past couple days I've been going to some classes on Harley's "Race Tuner" program, which is basically EFI tuning software. You can't be looking at the shields, you have to be looking behind the shield at the pipe itself. Both V-Rods run flawless from idle to 9200 ripums. Rojas 121 CVO Performance and mods 9w · Public Brand new 2025 CVO road glide with 325 miles on the clock. Mar 18, 2012 · maybe nothing to worry about, but thought i check to be sure. I guess now i know why my right leg was getting fried last weekend on a trip. The exhaust only travels a little over an inch till it hits the exhaust pipe and then nearly has to make a 180 degree turn or more. Go back and check your idle / low circuit and make sure all the fuel passageways are clear. Added slips and took a 3 mile ride. Also I noticed the pipe "glowing" when I pull into my garage when it is dark. Am runing correct octane, no additives no faults on bike. Wondering why you have a dirt bike exhaust glowing red and if it's okay? Whether you just got your bike or you've had it for a while and it started getting red hot, you're in the right place! In this article, I'll explain what it means when the exhaust is glowing red, whether it's okay or not, the most common causes, and how to fix it. All the exhaust heat hits the pipe square in the face, that's what makes it glow, 1300 plus degrees heat. h. Today we were using the program on a V-Rod, and the instructor, who is a very knowledgable dyno tuner by trade, was doing the tuning. What gives? Dec 14, 2008 · I've noticed that my 98 wide glide feels a little hot on my leg, but when I was riding home at night I looked down and noticed that my rear pipe was glowing bright red hot about four inches down from the exhaust port. If you need choke for more than a minute on a medium temperature day (in stock configuration) you’ve got an issue with fuel. I understand that there is a over-heating problem with most ultra's but this is rediculous. i have a tfi part no fi-1250st settings are grn-2:30 yel- 3:30 red 3:30 and rpm at 4. The bike is new to me and the pipes are wrapped with exhaust wrap down to the Mar 20, 2025 · Motorcycle exhaust glowing red? Discover the reasons behind this issue, how it affects your bike, and the best ways to prevent and fix it before it causes damage. I seriously doubt that red-hot exhaust manifolds are ever normal. I called several dealerships the next day,and they all said it wasn't too unusual, esp. In addition to the cherry red, there's a bluing of the exhaust pipe in a perfect ring bookending the glowing red, the bike smells of something burnt and a white smoke was rising off the exhaust pipe. Yamaha dirt bike with exhaust glowing red. Why would the exhaust be glowing red hot? 2022 Nightser 975 Rode for about 20 mins through the neighborhood then I felt an overwhelming amount of heat hitting my thigh. Come join the discussion about performance, modifications, troubleshooting, builds, maintenance, classifieds and more! I've got a new to me 06 vrscd with 4400 miles. V-Twin Harley Davidson forum. The Engine Is Running Too Lean If the bike, for some reason, does not get as much gas as it needs, it will still run, but it will be running too lean. Yes, the bike is running lean -- but it is the way that the factory has designed the motorcycle to run. Come join the discussion about modifications, troubleshooting, maintenance, performance, classifieds, and more! I am stumped. exhaust pipes glowing I never seen a Harley that did'nt have glowing pipes near the heads. We can hope! That would explain the red glowing exhaust pipe. Harley 125 enduro (I think it was a re-branded Aerimachi) that the exhaust glowed red on any time I rode it more than half an hour. But you say " the exhaust coming out of the front cylinder isn't hot" but the pipe is glowing red? :31: A red header and exhaust popping is a sign of an extreme lean condition. But a little color at night is just where it should be. short shots and reinstalled my stock header pipes and put on se slip on mufflers. The bike continues to run fine at speeds with no misses, backfires or sputters. Bike is ready to go no issues Full service done at 16k miles possibly trade for nice boat with some money The engine of my Harley-Davidson Street Glide rattled my chest, a low, familiar thrum that usually served as my moving meditation. 1. 1998 Harley-Davidson Heritage Springer · Driven 32,400 miles 1998 Heritage Softail Springer 95th Anniversary. All of my exhaust pipes glow orange/red when I ride them hard. Is it normal for a bike's exhaust to glow red hot when starting up? Sorry, this post was deleted by the person who originally posted it. The reason the muffler is glowing red is because the exhaust temperature is off the chart. Your headers are glowing because of the rapid increase in exhaust temperatures. 3) they ran less-restrictive exhausts, allowing hot gas to exit faster. It was the only thing that kept the ghosts of my time in the 75th Ranger Regiment from screaming too loud. " and this one Like I said,I use a SERT for tuning. Hey Guys, Has anyone had a problem with the front exhaust pipe glowing red on a 2008/2009 XL883 and lots of engine noise? Lean Maybe? Head pipes are glowing red hot at stops - 2002 Harley Davidson FLSTF - FLSTFI Fat Boy Posted by mlmarti on Nov 04, 2009 Why Are My Exhaust Pipes Glowing Red Hot? Exhaust pipes glowing red often indicate rich fuel mixture or clogged catalytic converters causing overheating. Stan The exhaust actually glows red/orange just after the two header pipes meet. Also I have notice that the head pipe (pipe underneath the heat shield coming just out of the head) starts glowing red after just a short start up and idle. Is this A forum community dedicated to Harley Davidson V-Rod Motorcycle owners and enthusiasts. 1) they had heavy, thick chrome exhaust pipes, double-tube in many cases. It's a timing problem of some kind, ignition or valves (or both!). On Sunday I started Tweaking a map to compensate for the 26t. Steel will glow red at 900 degrees F. The best systems I've seen with cycles are the ceramic coated exhausts but that process needs to be performed before the pipes are heated. Assuming that you do have a 45 Service Manual, don'cha? It's not hard to do, and on a 45, the cams are right there on the outside of the frame and all. Now I gotta check my UC when I get it back from the shop too. "An exhaust pipe will glow in the dark. 2K views 19 replies 12 participants last post by bugsy27_141 Dec 18, 2023 VegasOctane Discussion starter To be honest it may not be a problem at all, I hade seen lots of pipes give that dull red glow in the dark and an engine on a test bed will have exhaust pipes glowing red hot. It's fine and completely normal. Inside the cylinders there is a fire when the engine is running and the exhaust gasses coming out heat up the metal. 103 twin cam- exhaust and intake and PCV- headers glowing red at night when idling? My 2011 road glide 103 has a TBR 2-1 shorty exhaust and screamin Eagle open air filter. ‘Running lean’ refers to when an engine has an overabundance of air without enough fuel. If the catalytic converter is glowing red hot, the first thing that most people think is that the catalytic itself is clogged, but that is not always true. Most of the time when a part of the exhaust system gets hot enough to glow like this, there’s a restriction somewhere. It also backfired 2s after stopping the engine and now there smoke coming out of the exhaust after 5min with the engine stoped. i was Sep 21, 2022 · Glowing Red Exhaust ( turbo w/T-M ) Jump to Latest 4. It has a power commander V, with one of their tunes available from their website for a similar setup. Hello All, Not sure if I have a serious problem with the Bike, When starting from cold the exhaust header pipe glows cherry red and then after a minute turns blow torch red, This happens on the curved part of the exhaust header pipe which comes out from the cylinder head, Possible an over rich The exhaust AirInjectionSystem (AIS) used on the 2008+ bikes, combined with over-use of the cold start enrichener circuit (one to two minutes is normally enough) causes the un-burnt gases from the combustion chamber to finish burning in the exhaust port & header pipe. (thumbs) 11 I have typically replaced my stock exhaust systems with aftermarket race systems. A couple of weeks ago I installed a 26 tooth pully. Put a big sucker air cleaner,pcv power comkander and 2 to one pipe and 1/2 the heat now. Last edited by Sargehere; 11-09-2010, 12:46 PM. Harley had ceramic coated exhaust on the Destroyer V-Rods, they glow orange in daylight ! Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about . Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. During night time riding on the interstate, I noticed the rear cylinder exhaust pipe turning "red hot" where the crossover pipe is welded to it. One of the most concerning issues is when the exhaust system glows red hot. Understanding the causes and implications of a glowing exhaust is crucial for any dirt bike enthusiast. 028" thick and it is completely normal for the header tubes to glow a dull red in low light with the bike idling. Less of the exhaust heat was conducted to the outer surface of the pipe. on EFI & O2 sensor bikes. I noticed my rear pipe was glowing RED HOT at the split at the rear cylinder exhaust port. A forum community dedicated to all Harley-Davidson model owners and enthusiasts. I have been using A Twinscan II+ & a SERT. Lean conditions will cause it, but so will unburned fuel in the exhaust at idle, and that's what's being seen here. What pushrods are you using, and how are they adjusted. Checked the pipe and it was red hot. My first thought is the heat shield on the back exhaust but I can't find anywhere that it may be lose. Not super red but red enough i can see it . 21 reactions · 13 comments · 1 share 󱎖 Harley Davidson smoking and cat glowing red hot? Wayne N. I checked the Britbike forum Forums British Motorcycle specific Brands Triumph bulletin board Need some help understanding glowing red exhaust pipe Forums Calendar Active Threads Single wall exhaust, ball park 1200 degree F combustion temps = glowing exhaust unless there is some cooling air over the header. I ran it tonight in the shop for a bit and noticed the pipe from exhaust turning glowing red hot. sgxo, yu7zxs, yxji, o8du5, ukqjxt, u530w, l6ng, xlqij, e0yqh, snt7s,