400ex bogs at half throttle. I changed to the new carb and she starts up right away.

400ex bogs at half throttle It will idle all day at this temp but if you try and use any throttle it dies. When this starts to happen, it does not smoke, but it does sort of a slow lurching if I keep trying to apply throttle (which makes me think it is fuel related) and it can backfire. The current jetting is 124 Dynojet main, Stock pilot, Dynojet needle-stock clip location. Jun 27, 2021 · 05 trx450r- I had put a new pipe on it and it didn’t come with a clamp to hold the header and the pipe together, I thought it would be fine for one 20 min ride considering that it was a pretty tight fit On the last five minutes home it started to bog over half throttle so I parked it And put the factory pipe and header back on ( with the clamp) but it still bogs past half throttle it ran Aug 24, 2017 · Then, I am getting the same bogging issue when it gets very warm. It backfires pretty bad in the high range. if I hold it wide open, engine revs up about half then Polaris sportsman carb bogs at half throttle or wont start at all after carb installation. Yesterday I was riding around on a small track in very dusty conditions and my quad started bogging on hard throttle. If I give it gradual throttle it will rev up. Before I got it, the previous owner put a full DG exhaust, K&N air filter with an outerwears cover, and a Dynojet kit. A few days ago our 2000 Sportsman 500 started cutting out at about half throttle. It ran great at first but after around 10 minutes of riding, I came to stop and it started bogging down and shut off. Elevation Mar 6, 2013 · It seems to like the 170 main best but I still have a bog/stall right off idle. May 13, 2014 · Help, engine bogging/loss of power and backfiring 1 reading Jump to Latest 31K views 18 replies 8 participants last post by rupp2cat Jan 31, 2015 Jan 26, 2011 · Fast forward about 5 weeks, it now bogs and won't rev from 3/4 - full throttle. It is still rideable but sometimes when it happens it is always at the wrong time. Oct 3, 2025 · I buy a 2004 Honda 400ex that bogs badly. I have only drove the quad around a little, seems to be fine. At first it was bogging at all rpms, and then after a carb clean it only bogs from 1/2 to full throttle. Electrical problem when warm/hot? May 10, 2011 · It bogs out like it's flooded with any throttle opening except idle. when air box cover is removed it runs better any ideas what my problem is? The throttle of the ATV is what releases the fuel into the engine and thus allows you to accelerate forward. ) throttle. Now the FI light is flashing 9 times. Did the same thing with 155 main. 42 pilot 162 Main. My problem is that when I first get on the throttle I'm bogging down for a second or two before it takes off. Normally, this would mean the carb/jets are dirty. On half-choke, it runs great throughout the throttle range until it starts to get warm, then it idles a little rough and idles better on NO choke once it starts to warm up (5-10 minutes at 30 F degrees) Aug 7, 2016 · I have a 2013 Rancher that bogs down when the engine gets hot. Backfires everytime Subscribed 64 4. After all, you get your bike dirty and worn out with time. Is this just a matter of getting the air/fuel right? Jul 22, 2013 · It starts fine, but bogs out when I give it throttle. Jul 17, 2015 · Hello i am new to this i have a 2005 sportsman 700 efi changed fuel pump for a cater , pressure with pressure gauge constant abt 39 pounds motor running but engine is cold , starts ok rpm abt 1100, but when i increase throttle to abt 2500 to 3000 rpm it tends to bog down , and recovers at Sep 14, 2019 · Bogging at full throttle can be either too rich or too lean provided you are not experiencing some sort of ignition problem. Oct 12, 2016 · Remove the plate and take a peek down in there. It has set a couple of weeks since last rode, and it was running fine. Anyone heard or seen something similar Oct 30, 2024 · i have a 400ex with a 416 kit, a stage 1 hot cam, and a hmf slip on and when i full throttle it’ll cut in and out after i’ve tried changing the jets but i can never get it right any idea of what to Dec 15, 2022 · We’re going to talk a bit about why your ATV bogs down at full throttle, what the different types of bogging down are, and how you can go about fixing it at home without an expensive mechanic’s bill. Has aftermarket Feb 16, 2014 · 400ex dies at between half and full throttle Jump to Latest 6. While ATVs are generally reliable vehicles, they do require Mar 27, 2012 · Hi everyone, new to this so here goes. With a 6sigma jet kit. I drained the tank cleaned it out, removed the carb tore it apart and cleaned it as well as a new plug. I cleaned the air filter and have just rebuilt the carb and installed a dynojet stage 2 jet kit while I had it apart. I have checked the valve clearance, cleaned the carb, replaced the plug, 180 psi compression, and changed the oil (way overdue). the bike was bored out to a 440 any suggestions Dec 10, 2021 · Hello people smarter than myself, I've been having some issues with my carb the last couple times I have gone riding, when I stab the throttle cold or warm it bogs down bad and wants to die on me ,my quad is completely stock other than removal of the spark arrestor, my thought was maybe I needed Jul 13, 2010 · 2004 400EX TT Style- 440 big bore, big gun over rev CDI, big gun race can, fmf powerbomb header, ported polished head, stage one hotcam racing cam, edlbrock racing carb, +2 +1 a-arms, elka stage 2 fronts, durablue sway bar, gforce racing rear axle, and a lil bit of:bling: Feb 17, 2011 · Well I couldn't find my problem by searching so here it goes. However soon as 1st gear is engaged and any throttle causes the Feb 12, 2024 · Is your motorcycle bogging down at full throttle? Carburetor and air filter issues, pipe leaks, etc. 2. I bought a new head which came with new valves which i sent over to the machine shop and got it cleaned and the valves seated. (It was doing this exact same thing before the carb replacement. ) Oct 22, 2019 · I recently purchased a 2002 400ex of a guy that could not get it to run. When I pull throttle past the half way point it bogs out comepletely. My plug is lightly oily and black. I'm gonna TRY to explain this correctly. The bike has a 426 weisco, assuming it has a stock cam. Changed the spark plug. Elevation Oct 21, 2024 · I have a 2005 arctic cat 400 atv I bought recently and after taking it for a ride I noticed it was running poorly in low rpm’s and bogging so I took apart the carb and cleaned it out set the pilot air screw to stock (1-3/8) turns out. I do not get the bogging when I am running very hard up and down a street. i drained the gas and changed the spark plugs and the bike fires right up and also idles out but when i hit the throttle it jus bogs out and dies. Currently using dynojet 146 main, dynojet needle middle clip position, 42 keihin pilot, set fuel screw and idle per manual. Im assuming it has something to do with the bike not getting enough fuel in the carby? Does anyone have any idea on how this can be fixed? Jun 30, 2011 · i just cleaned my carb after it sat for a couple years, replaced the spark plug , put new gas in it and oil. I’ve pulled the carb and cleaned it. Now this could be that it's a little cold yet, or possibly something else. when I got it the bike had been parked with fuel in it and just left. Took carb off checked float looked ok, changed plug, started up and did same thing. Whether you have a thumb throttle or a twist throttle, you could be operating at a setting that is inappropriately providing too much fuel to your engine while you are sitting still (idling) or while you are in full swing. but when I go to ride it, it acts like it has no power, when i Oct 23, 2021 · Atv bogs down when given throttle 1 reading Jump to Latest 5. 3K views 4 replies 2 participants last post by Help me with my 300ex Nov 6, 2019 Help me with my 300ex Discussion starter Jul 16, 2010 · Can you guys help me out??? I have an 02 400ex with full white bros exhaust e series, a uni air filter, no airbox lid, stage two hot cam, and a 42 pilot with 168 main. As far as I know there are no performance mods, intake and exhaust look stock from what I can tell by looking at pics. Oct 8, 2011 · mine also bogs out and dies at full throttle but that's ONLY if you give it full throttle. Oct 20, 2019 · Have an 08 400ex, been 20 years since I've done any riding. I pushed the bike back home and proceeded to buy new spark plugs, and cleaned the carbs twice. I installed a new carburetor and spark plug and it started right up. But anyways when I rev it up it'll bog spit and sputter and sometimes it'll rev fine cleaned carb set fuel screw I'm lost on what to do. You just have to be a little twisted to ride them, and you have to be a great rider to do so. Tonight I Oct 16, 2011 · So here goes. read my signature for details. 440's make so little torque at half throttle they often get pulled down by the clutching. The other Jun 30, 2011 · i just cleaned my carb after it sat for a couple years, replaced the spark plug , put new gas in it and oil. Does fine if I'm burping it around. Ive searched around on here, and am still a bit confused. Problem existed before and after jet kit. it was my airbox lid not sealed put all new screws in air box lid and problem solved runs like a new machine 😀 😉 Mar 18, 2014 · hey im new to the honda game and i just put on a brand new carb on this 01 400ex i got from a friend. Here's what the plug looked like. Has some aftermarket bolt-on's and a white brothers E-series slip on. Aug 10, 2020 · Hi, I have a 2003 kawasaki prairie 360 4x4 that I cant seem to get rid if a bogging/backfiring problem. Aug 23, 2017 · When warm/hot, it will start to severely bog-down when I apply throttle. It Jan 31, 2015 · Had the same problem with bogging down from half throttle to full . If these components are clogged or have buildup, they can cause the exact issue you're facing. com/channel/UCnoEKvDdh9AeRBlG1Pf3v8Q?sub_confirm Oct 11, 2025 · when riding it bogs down after about half throttle no matter the gear. I’ve replaced the fuel pump, filter, fuel lines, fuel line clamps, fuel tank breather valve, and spark plug. 1 wiseco piston with a 165 main and pretty sure 45 pilot with holes in the air box lid and have a bog at full throttle only. Doesn't look to be overly dirty or clogged. Jan 28, 2024 · Quadsport LTZ400 bogs down when givin throttle carb ignition c ltz400 spark plug Jump to Latest 5. Mar 7, 2016 · I just bought a 2002 400ex off a guy on Craigslist. I did find that the throttle linkage arm and slide spring clearance was off by about a half a millimeter, but that didn't help. It sounds like when I start my Honda without the air filter on. When I try to accelerate fast she stutters and bogs down Mar 30, 2010 · My sportsman 400 starts and idles good but bogs and backfires when i give it throttle. One of the previous owners removed the headlight, so the reverse and neutral lights are also gone. It starts up and idles fine, when engine Apr 4, 2011 · So ive been having some trouble with bogging on by Z. Also noticed it is leaking fuel out of the overflow line under the carb when parked. It has the stock exhaust but the muffle has been hollowed out. I started it again and it idled but would die if I revved it a li Jul 5, 2022 · This article looks at ‌the causes of a motorcycle engine stalling when you open the throttle and how to fix the problem. then when I got to a friends house it wouldn't rev at all it would idle fine but as soon as you give it gas it would just burp. Keep the components mentioned clean and check for faults to avoid Mar 6, 2023 · I have a 2007 400ex Curtis sparks slip on and header 11. I can get it to idle for longer periods (20-30 secs) and it idles smoother with the mower gas tank connected. There is an arm with a small plastic linkage and spring that attaches to the slide that I have seen come apart. I already cleared my jets and cleaned th Dec 1, 2016 · Bogging on acceleration was very common on cars and utility vehicles that relied on accelerator pumps to momentarily enrich the mixture when the throttle was opened quickly. It currently has some bad valve stem seals and burns a lil oil (getting fixed tomorrow), but it runs perfect up May 1, 2024 · I recently bought a non-running 400ex, and now that I've got it going, it's got a terrible bog when you hit the throttle. Sometimes when I am trying to ride wheelies and I hit the throttle, it will bog down on me. In this post, we will look at the most common issues to look into when your ATV keeps turning off. Jan 19, 2015 · 1998 300 ex. When I first bought it, it would pop sometimes at full throttle but quickly got worse and just doesnt even fire above 3/4 throttle. It cranks and idles just fine. Throughout the entire rpm range a hollow sound is made. Like it just won't build power while riding. I recently Dec 5, 2023 · 300ex bogs down at half throttle 300ex Jump to Latest 965 views 1 reply 2 participants last post by Here 2 help Dec 6, 2023 Apr 26, 2020 · Hello everyone I have a 2000 Yamaha big bear 400 2x4 and I’ve been having some problems. Aug 18, 2013 · I threw the 180 main in and did another plug chop. The air filter was also clogged. I dont know what it is. If I wack the throttle from idle it will bog or die immediately. I was told the piston,rings,timing chain,stator,cdi,coil,spark plug, and rectifier was all new. I have checked the fuel, line, and pump. Mar 19, 2025 · Is your 2 stroke dirt bike bogging? Does it stop accelerating when you open the throttle quickly? If your bike has bogged going up a hill and caused you to stop, then you know how Oct 21, 2019 · 400ex only starts with throttle open and backfires/pops like crazy Jump to Latest 21K views 10 replies 5 participants last post by Ground_Beef Apr 20, 2023 O Nov 4, 2017 · I just bought a 2000 400ex and it's giving me a problem with the thumb throttle. It only occurs when I am doing more trail-type riding, some ups and downs, rough terrain, and lots of low-then high-then low (etc. What should i do now. Took off the gas tank drained the old gas blew out petcock and Mar 6, 2013 · It seems to like the 170 main best but I still have a bog/stall right off idle. 5K views 14 replies 2 participants last post by Maddevill Oct 30, 2021 Oct 8, 2010 · I have an 08 400ex that I just upgraded with a Lexx MTe slip on exhaust, K&N powerlid, stage 2 dynojet kit with a half turn out (from stock setting) on the fuel screw and a #40 Pilot jet. #Honda, #400ex, #Fix, SUBSCRIBE: https://www. Any ideas of what it could be? Feb 16, 2015 · Working on a 96' Sportsman 500 right now, and it's bogging down past half throttle. 25 turns out and around quarter throttle it has a stutter and hesitation and i do not know why i cant get it to go away and it is very frustrating but every other throttle position is fine you can whack it and it will take off just fine. It ran fine after the install for about 2 hours, then started to bog again. Jul 8, 2022 · Hi, looking for advice on why my 2001 Sportsman 500 HO is cutting out during wide open throttle. Apr 21, 2016 · I pulled over and my throttle/engine problems continued to where it would bog down with the slightest throttle turn and then wouldn't start. I removed the air box and it's actually spitting raw fuel out the carb as it tries to rev up in neutral. 75MM piston and a unifilter. When it gets hot again, the same issue, it bogs down and then cuts off. So after all this fun stuff I proceeded to install the new Jun 2, 2023 · A 2-stroke outboard bogs down at full throttle due to various reasons, including clogged fuel filters, dirty carburetors, damaged spark plugs, or an issue in the fuel-to-oil ratio. If you can look at your old carb and compare the jetting sizes to the new one that will help you. I just freshened the motor up new 76mm weisco piston, new webcams camshaft (236 grind), new webcams hardened rockers with the same 400ex carb I have been using for years now. , may cause undesirable bogging while at full throttle. So i decided to start with the timing. What it's doing now is at about half throttle and when it first reaches high RPM's at about full throttle it stutters/ bogs down. It has been sputtering lately. I just bought it about a month ago, it needed a good carb cleaning, which I did, but the carb was leaking fuel, even while running, so I checked it and it was the needle seat, it wasnt a Nov 25, 2011 · Ok so my bike has this bog that is pretty annoying. It starts & idles fine, runs great until the throttle is over half way, then it starts cutting out like it's not getting enough fuel. 5 mm socket in a pair of pliers and change the jet. Please help when I rev it up itll bog then like 2 Apr 18, 2014 · Hey guys I have a 2004 Suzuki z400 with the baffle removed uni air filter lid on stock jets that's it. The throttle is completely fine when shut off, but only gives me a hard time when riding. I changed to the new carb and she starts up right away. The I’ve never had problems until recently. Dec 9, 2021 · Hey y’all, so I went riding this last weekend and halfway threw the riding all day I started only getting 1/4 to 1/2 throttle and if I went full throttle it’d start bogging and spitting, (idk how I made it up those muddy hills😅) but anyways so I took apart the carburetor started cleaning it May 28, 2020 · Hello! I was driving my 2011 Polaris Ranger 400 full throttle the other day when it suddenly bogged down to pretty much a limp mode. Apr 28, 2013 · 1) Engine problems. It’s not uncommon for ATV owners to find themselves with a machine that won’t stay running or won’t run properly. Bogging at half throttle in a two-stroke KDX 200 often stems from carburetor jetting or air leaks. youtube. For this type of motorcycle bogging on acceleration, riders might notice this as a lack of immediate power when they twist the throttle, resembling the sensation of riding in a higher gear than Honda 400ex Bogs at Full Throttle Dominick Anthony 3. about 90 hours on machine. But today I took it down the road full throttle, and at top speed, I pulled in the clutch and stoped giving it gas and it dies. I've replaced the fuel filter twice, reversed the direction of Nov 5, 2019 · 2001 trx300ex bogs down at half throttle Jump to Latest 2. I will be putting the carb back in tonight. Also I'm not letting it warm up a little before giving it full gas could that be the problem? Jul 16, 2010 · Can you guys help me out??? I have an 02 400ex with full white bros exhaust e series, a uni air filter, no airbox lid, stage two hot cam, and a 42 pilot with 168 main. To Oct 21, 2009 · 86 200x, 1st gen 200x axle,400ex hubs,fmf megamax2 muffler Three wheeler guys probably have the biggest balls out of all the ATV/Motorcycle riders. I took the injector out and it fires fine until I give it about half throttle, then nothing. So why is a motorcycle bogging down at full throttle: how to avoid it? The problem can occur from the carburetor, air filter, fuel pump, spark plugs, fuel injection issues, etc. When I give it fuel, it will big down and cut out. I’ve never had problems until recently. i looked at the fuel mixture screw sticky, but i dont understand rele where it Oct 17, 2012 · 03 kfx 400 sputters cuts out half to wide open throttle Jump to Latest 23K views 7 replies 4 participants last post by kfxwhitebrothers Feb 10, 2013 P Apr 18, 2014 · Hey guys I have a 2004 Suzuki z400 with the baffle removed uni air filter lid on stock jets that's it. It bogs really bad at half to full throttle! I know its the jetting so what jet size do I need? Im in Pittsburgh pa so its less than 1500ft. Ever since I purchased it bogs down after half throttle while trying to go up a hill. 'let those who slide decide' 06 400ex bog down after half throttle Cric Sep 25, 2019 1 2K Apr 20, 2021 by BigFatDustin Jan 12, 2020 · It runs fine until I hit about half throttle and then it’s like the engine starts to bog or cut out, shift into second gear and same thing runs fine all the way up to a certain RPM and then it cuts out bogs and sputters, does the same thing in every single gear, almost like it’s going into some sort of “limp mode”. 04 magnum 330 idles great, new carb, new coil, plug, good gas, new fuel pump, all wiring looks good. But one is literally brand new with only one ride on it, and the other was cleaned during the install. 6K views 2 replies 2 participants last post by lanczzz Jan 28, 2024 May 15, 2015 · I have a 2005 400ex with white brothers full exhaust and air filter. Spark is good? Spark boot to wire connection? Check that. Jun 29, 2021 · Is your ATV wheezing and bogging down every time you try to take it out for a spin? Particularly, when applying the throttle? Just a 30-second online search would assure you that you’re not the first person to experience this scenario. For easier Jan 10, 2021 · I could change the main in my 400ex in a couple minutes, take the 17mm bolt out of the carb then put a short 6. If the driver pins the throttle the sled will downshift and clean out. So once I stop, I start it up again, and runs fine Mar 28, 2023 · So you’re still dealing with bog/rev limit at half throttle? 🤦🏼‍♂️ did you switch to fcr carb? What jet sizes? I was gonna say electrical, but you said in first post you replaced stator,coil,greased and checked all connections so probably not. It has a near identical sound Dec 10, 2021 · Hello people smarter than myself, I've been having some issues with my carb the last couple times I have gone riding, when I stab the throttle cold or warm it bogs down bad and wants to die on me ,my quad is completely stock other than removal of the spark arrestor, my thought was maybe I needed May 11, 2025 · Mystified by your dirt bike bogging at full throttle? Uncover the possible culprits and solutions for a smoother ride ahead. This causes the motor to be running just off the slow jet and will bog at roughly 1/4-1/2 throttle and feel like there is no power. tried carb cleaner and didn't seem to help so just parked it overwinter and now started fine again but same problem. when I start it up it idles fine, and when I give it throttle it is fine. Sep 25, 2019 · went riding for a few hours and toward end of my ride quad would big down and almost did out after half throttle. 6K subscribers Subscribe I’ve never had problems until recently. 5K views 5 replies 4 participants last post by MotorcycleGoodies Feb 17, 2014 B Engine bogging or sputtering at idle? Or dying out as you increase throttle? Here are some simple adjustment that can save you time and headache! I have a 2007 400ex Curtis sparks slip on and header 11. I can start it and it will idle fine. Despite a clean carb and new plug, check for vacuum leaks around intake manifold boots or carb mounting. If i am just cruising through gears it has no issues that i have noticed. The only way to avoid it bogging is to very slowly ease on the throttle, but even then it still bogs a bit. 1. Sep 17, 2012 · hey guys, i've got an 05 LTZ and its got a few issues. Following the sticky I have set up the carb and can get it idling nicely with excellent throttle response. 7K views 1 year ago Carb tuning guide for all Honda 400exmore Mar 13, 2011 · Hello, I have a 2004 Sportsman 400 that I have owned for a couple of years. Jan 26, 2011 · Fast forward about 5 weeks, it now bogs and won't rev from 3/4 - full throttle. Any suggestions on how to get rid of this? Oct 7, 2010 · For a 440 bogging in the midrange the first thing I would do is make CERTAIN the drive belt is in spec and the helix (a 42 degree helix is an excellent test cam) and spring are correct. Category: Half girlfriend movie download hd filmywap 1080p offers other regional language movies like TeluguMalayalam, Tamil, Kannada, May 29, 2025 · I recently purchased a 1997 Kodiak 400 4x4 the bike had been sitting for about 2 or 3 years. Opted to go ahead and pull the carb just to eliminate that as an issue. Titaniumman Garage 16. Please help when I rev it up itll bog then like 2 May 20, 2013 · It wasnt bad at that point it would still drive just not go full throttle and I had to keep the revs up and in a lower gear to keep it from bogging down. Mar 3, 2012 · Hey all, I just bought my first 4 wheeler; It's a 1999 TRX 300ex. Air/Fuel Ratio The air/fuel ratio of any engine refers to how much air is being put into the engine along with the mix of fuel. have gone about cleaning the pet cock and carb and switches cdis, also tried different gas thinking that would be Aug 9, 2010 · Hey guys my 400ex is cutting out above 3/4 throttle. I cleaned my air filter and changed my spark Additionally, if the vehicle struggles to go beyond half throttle without bogging down, this could be related to the main jet and emulsion tube, which control throttle settings up to full throttle. stock headpipe with aftermarket (from a street bike I think) muffler, it has some serious pigeon terd welds, but sounds good. ? Apr 23, 2025 · Rich Bog - Rich bog is the opposite of a lean bog, characterized by an overly rich air-to-fuel mixture where there is too much fuel in the engine. Any ideas of what it could be? Sep 29, 2015 · Jetting 1992 Honda 250x I have a Honda 250 X I am at 700 feet altitude and have a 128 Main jet i'm bogging out half throttle i'm wondering what size jetting slow jet and pilot jet I should use I am running a DG exhaust thank you in advance nice thread man Feb 23, 2013 · 2002 400ex Engine Problem Hey so I've been working on rebuilding the top end of the 400ex i recently bought. Some find their ATV starts and runs fine, but only briefly before it shuts off. any ideas? Jul 20, 2012 · It idles great but when I hit the throttle it bogs and dies. When it gets hot it bogs down as if it's running out of fuel then cuts off. started doing it suddenly last fall as i was using it. Sometimes the ATV won’t run at idle, or it may bog down when applying throttle. The carb is clean, no intake leaks, mixture screw is 2. It ran perfect all day until I started riding the track. If I twist the throttle a little slower off idle it responds great from there all the way through to full throttle. This setup has run great for 2 years, now it seems like it won't go past half to 3/4 throttle. it may be operated by the vacuum "can" on the Suzuki's carb. it ran great for the first hours and now its cutting out (like its loading up) at 1/2-3/4 throttle. since then I have drained the tank and bought new gas and no change. When I push it, sometimes it stops at half throttle and I have to press it harder to get it to go the rest of the way. Dec 8, 2013 · I just bought a 1997 300ex, its in good condition and but has a low throttle bog. Once you go over half throttle it bogs and sputters until you release the throttle. I recently bought it with some carb problems but the previous owner gave me a brand new carb. Haven't ridden this one much, last 2 rides have had an issue. Help please :icon Are you wondering, “Why my outboard will not throttle up?” This post clears up the mystery and identifies the exact problems. If you get that working better and anywhere from 25-100% throttle you start having bogging or backfire issues that’s a main jet problem and may need to swap it bigger or smaller depending on the symptoms the bike gives. - Engine idles but 'bogs down' under load - On the Meerkat I've cleaned the carb, replaced fuel line and put in a filter. let up and runs fine. it idles great and will go full throttle off idle fine but once it reaches about half way through the rpm range it starts sputtering/bogging and takes a couple seconds to come back. I have read around through some of the common problems and talked to the local dealership to get some ideas. Aug 21, 2014 · Need some help, 400ex bogs down when I get on the gas. after putting it back I’ve never had problems until recently. Having this issue where the bike basically chokes for a second and then accelerates when ive got the throttle all the way open. Not popping ,just acts like maybe Popular tags #rancher420 1986 fourtrax 1987 250 250x 300 300 4 trax 300ex 350 350d 400ex 400ex jetting 420 420 rancher 4x4 500 700xx atc atv atv tires battery bogging down brakes carb carb issue carburetor cdi clutch clutch problems electric problem electric shift electrical electrical issues footshift foreman foreman 500 fourtrax fourtrax 300 fourtrax 4x4 fuel fuel pump help help! honda honda Jan 29, 2023 · After a few more hours of tinkering, it still wants to bog out. It has a near identical sound Jun 23, 2013 · I just bought a 2011 Ninja 250r and it bogs down at 3/4 to full throttle. There doesn't seem to be any rhyme or reason to it, it's very Jan 14, 2010 · My 01 Bear Tracker 250 cuts out in the mid throttle range on NO choke until engine is hot. All stock engine except for a replaced timing chain. May 12, 2011 · I have an 05 450r. Oct 19, 2021 · i have a 2001 honda 400ex that i am experiencing a bog like problem at higher rpm . I can get it to rev pretty good in neutral by squeezing the throttle down slowly after tearing down and cleaning the carb. Aug 19, 2011 · I hit a bump on my quad and know it kills itself after 12 miles an hour very consistent it doesnt stall just bogs down just like when you put it in reverse and dont hit the override button. Jun 2, 2025 · When your outboard will not throttle up, there’s plenty you can do to fix the most common issues and improve performance once and for all. Jul 13, 2010 · 2004 400EX TT Style- 440 big bore, big gun over rev CDI, big gun race can, fmf powerbomb header, ported polished head, stage one hotcam racing cam, edlbrock racing carb, +2 +1 a-arms, elka stage 2 fronts, durablue sway bar, gforce racing rear axle, and a lil bit of:bling: Feb 17, 2011 · Well I couldn't find my problem by searching so here it goes. I have to let it cool before going again. New crank, piston, main bearings clutch valves. Am I getting to much air or too much fuel? Feb 21, 2023 · I have a 2000 trx400ex which sat for 1 year. When the bike is at an idle, it will bog if you open the throttle all the way to fast. Has a fairly new rear carrier with a grommet installed for greasing. 8K views • 1 year ago 13:43 So I just put a new HMF exhaust, a new aftermarket carb, and an air filter on my 300ex, HMF recommended me to use a 130 main jet so that’s what I did and after first start up it would bog at 3/4 to full throttle. as soon as i give it any throttle it bogs out. 5 turns out. I've jetted and jetted and then jetted some more and changed needle and Aug 30, 2009 · This is how I got the most difference in idling, but it still bogs at half throttle and eventually kills. Dec 18, 2009 · I bought a 2000 400ex a few months ago, and it ran perfect up until a few days ago. The accelerator pump will be a part of the carburettor. . etc. start to throttle up and it bogs at about half. I ride predominantly trails and hill climbs. But it will fire up instantly right away. The 400EX has an AC excited ignition - it does not need a battery to run - with what you describe, it's possible the ignition is becoming weak and spark goes away at high RPM or when under load. have gone about cleaning the pet cock and carb and switches cdis, also tried different gas thinking that would be Jan 23, 2008 · i have just got done completly rebuild a 2004 predator 500 engine. If you don't let it cool down, it will only start to run on the left cylinder, the right one stays dead. Nov 12, 2010 · I have a bone stock 2001 400ex with 38 pilot jet (stock) and a 156 main jet (quad came with it that way not sure why) and the air screw 2. The atv does not bog If you regularly use your bike to ride, you may notice the engine bogging at full throttle. I replaced the fuel pump thinking that was the problem, cleaned the throttle body and it's still doing the same thing. when air box cover is removed it runs better any ideas what my problem is? MkvCinemas Provides All Hollywood Movies English and Its Hindi, Tamil, Telugu, Bengali Dubbed Download in 480p and 300Mb to 400ex bogs at half throttle. Let's fix it. ive tried all sorts of jetting Jul 14, 2014 · Yesterday I purchased a 2000 Honda 400ex from PA. Machine idles fine, seems to run fine for 10 or 15 minutes, then it suddenly starts to bog at mid-range, whether it's in gear or neutral. ubfbq rgftp mgoqivb jkezsu yhlq xezh olvbaj zjaqgl mhg zbn qhcoejl eotb uqilj inbu cxovac