EricJRW Chief Petty Officer. Much like a running rich engine, there are various reasons why your ATV’s engine might be running lean. Comment; Flag; More. If there is too much fuel than air in the engine, this is known as running rich. To be sure of whether your engine is running rich or lean, use a scanning device to check the engine control unit. Any of the reasons revealed above could be the cause of your Chinese ATV bogging under throttle and also what causes engine bogging. Don’t stick your face down by the exhaust , just stand next to the motorcycle while it’s running and if it smells really strong of fuel then that means your engine is running rich and you need to adjust your air to fuel ratio. After plugging the scanning device to your ATV’s engine port, the tool will scan for any fault codes. Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!! However, if there is too much fuel (and consequently too little air) being supplied, then it is likely that the excess fuel will leak outside of the chamber. If it stumbles and recovers your Rich The clot prevents or slows the fuel from reaching the engine, causing it to bog under throttle.eval(ez_write_tag([[300,250],'atvfreedom_com-box-4','ezslot_5',113,'0','0'])); When your Chinese ATV is new, the Evaporated Emission System starts instantly and works amazingly. Content on hondaatvforums.net is generated by its users. Recommended ATV Goggles: Oakley Mayhem Pro (Prizm), The Best ATV Helmet Under $300 – The Fox V2 Preme Helmet, The Best ATV Warm Weather Gloves – Klim Dakar Pro, Recommended ATV Chest Protector – Leatt 5.5 Pro HD, Recommended ATV Neck Brace: Leatt GPX 6.5. To be blunt, you’re unnecessarily killing your engine and it won’t be long until you find yourself buying a new one. Remember, it’s caused by short moments where there’s too much or not enough fuel, which means the problem with your ATV is pretty small. i have a uni ai filter on it. To clean out the carburetor effectively, you can use a cleaning spray. The only downside is that the device doesn’t reveal the reason why. hey i got a 2000 400ex and it seems to be running rich i got a dg pipe a 152 main and a 42 pilot, i removed the choke and drilled holes in the airbox lid. Will the plugs "clean" themselves if they all of the sudden find themselves in an engine that is no longer running rich (I.e. After that, you can unscrew the carburetor at the bottom and clean out the bowl. Don't hold it wide open in neutral. Posted by mark jonsh on Jul 22, 2014. Move the needle to the top and put it back. BTW - the idle mixture setting will never cause a motor damage. If you suspect a vacuum leak keep your ears open for the hissing sound. 7 Common Engine Running Rich Symptoms. Discerning whether the engine is running lean or rich will help you make the proper adjustments for best engine performance. How to stop a running rich atv - RTO 125cc Full Size Adult Quad ATV. Alternatively, you can replace the air filter altogether. Your bank 1 or bank 2 … Running rich, how to fix? The engine air filter is meant to trap any dust and debris and prevent it from getting into your engine. Sometimes, it is just easier to hire a professional so you don’t have to waste your time trying to fix something, not knowing if you are actually doing it the right way. Pulled my plug yesterday after I quickly ran WOT and then shut it off to check it. Then it starts running rough and wont idle. how would i adjust the air mixture screw on the carb? Try cleaning out the air filter and check whether the problem goes away or not. on a newer fuel injected motor, you would plug it into the computer at a shop, get the diagnostic of the problem, fix the problem, and down the road you go. It’s not often that most people remember to clean out their gas tank, which causes some problems with the ATV. Hello, I have been through this top to bottom. JavaScript is disabled. Below are some of the primary reasons why your engine bogs under acceleration. Hit the kill switch why you are running wide open and then let off the throttle and come to a … Spark Plug Colors Reading Instructions - ATV Technical Articles, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada, hondaatvforums.net is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Now when you run at WOT you need to hold it there for about 10 sec shut it off while on th throttle the second you shut it down let go of the throttle. Print this page; Share this page × Ad. As mentioned earlier, cleaning your air filter will prevent a clog up and thus curb an overly rich fuel mixture. Your ATV will still be able to function, but you are likely to encounter signals such as a strong gasoline smell, especially if it’s idling, slow acceleration, and low gas mileage. 5 Reasons Your Chinese ATV Bogs Under Throttle, How To Measure Your Head For An ATV Helmet [Pictures & Video]. Want Answer 0. Adjusting the mixture is an imprecise art, requiring that you know your engine well and listen close. If you take a look at various ATV forums, you will find other ATV owners with the same issues. Here's a simple and quick way to test if you are running Lean or Rich at Just about any Throttle position,WOT, Low Speed, Mid Range etc.. I’m not by any means a pro at riding so anyone is welcome to share tips, comments, or suggestions, no matter your level of experience. If your Chinese ATV has been running efficiently and begins bogging, there could be a problem with the components or the assembly. I will put it in and then hopefully this weekend after I get new tires, chain, and sprockets on I will take it out for a test. What are the exact steps? Do I need to swap out with clean plugs before every test? turn then air fuel mixture screw all of the way in gently then turn it out approx 3/4's to a full turn. went to the local honda place and got a 170, they were out of 175's. The best way to fix your ATV backfire is to test the engine. It also helps your engine breathe clean air. If you take a look at the spark plugs, you’ll notice an obvious difference. joe_atv. I had changed the exhaust that day, so I may need to get a new plug to check it again? Unless you happen to be a great handyman, performing ATV repairs can be a real pain. If you are unaware of the adjustments needed, take your ATV to a certified automobile expert to resolve the issue. Posted by lizzybeth_al on Nov 05, 2009. Come join the discussion about upgrades and reliability for your Rancher, Foreman, Recon, FourTrax, Pioneer, and more! Regardless of whether or not the engine is running too rich or too lean, bring it down to a very lean mixture by turning both screws a quarter-turn at a time, counter-clockwise, then slowly bringing them back up to an equal and smooth mixture. The motor may not idle correctly, however. This site is a participant in the Amazon Services LLC  Associates Program, an affiliate advertising program designed to provide a mean for sites to earn advertising fees by advertising and linking to Amazon.com. If your vacuum lines are loosely connected, and the hose pipes are leaking, then your car will run rich. A clogged engine air filter causes an inefficient and polluted air and fuel mixture, thus bogging down the engine. hi, i am wondering if i am running to rich on my Honda recon. Running rich is usually not an issue. Tips for Preventing ATV Engine Backfire. A lean bog occurs when the air to fuel ratio in the engine is imbalanced. If you think that your engine is running with a rich mixture, there are some things you should check to confirm this. Hi, my name is John and i’ve been fascinated with ATVs since I was a little kid. Sometimes your engine sound may muffle it. Now obviously it’s not a problem of constantly running too rich or too lean. Turning this screw clockwise will reduce the amount of air entering the carburetor, and will, therefore, richen the mixture (refer to a shop manual for correct settings). ... 08-22-2007, 07:05 PM. I would step up the main to a 175 and try it again. hondaatvforums.net is not in any way affiliated with Honda Motor Company. After plugging the scanning device to your ATV’s engine port, the tool will scan for any fault codes. Air filter is clean (however found a dead mouse in the air duct leading to filter) This is a 2002 375 auto. As mentioned above, a dirty air filter is one of the primary reasons for a bogging engine. Let's say I'm trying to dial in a lean or rich bike. To fix the issue, check if your engine air filter is clogged or dirty. i know where it is but which way do i turn it and how do i know when it has the right air mixture? Comment; Flag; More. If you are running your ATV to rich then your spark plug may be black, covered with gas, oil, or carbon. This is why resolving the issue is the priority for most ATV owners. This should be checked by assuring the electrode has a clean gap of .023 in. If it surges ahead your Lean 2. When you notice a Stumble, Back off the throttle a little 1/8-1/4: 1. Atv is back firing when i let off the throttle 2004 yamaha yfz450 with a complete fmf factory four exhastmodquad with k&n air filter sounds like your quad is running a little too rich. If there is no bog, you’re likely running lean. Not wet, just black. the perfect colour of a plug is a dark tan colour. A dirty gas tank mostly means that there is a gasoline clot in the gas tank. China made atv won't idle fix.More at Our Website: http://everythingatvutvreviews.com/ Most of the devices trigger a check engine light code when your engine either runs rich or lean. Lastly, put the transfer pump screen back and see the difference. Cheap Chinese ATV youth ATVs of lesser-known brands are notorious for not running properly after a while. Take note of the running condition of the engine. i have a thick layer of black stuff inside my muffler and i didnt know if i was runnin to rich or not. I had it running for about 5 minutes and it started to sputter, wouldn't take any throttle response and then it died. if it idles and shuts off and also backfires when you give it gas it is running to lean. A dirty or clogged air filter is one of the most common reasons for an engine bog under acceleration. Can you hold it WOT with it parked in neutral or while driving? Alternatively, disassembling the carburetor can go a long way in ensuring that it is thoroughly cleaned.eval(ez_write_tag([[300,250],'atvfreedom_com-large-mobile-banner-1','ezslot_7',117,'0','0'])); Drain out the gas tank and inspect it for rust or gasoline scale. Some of the reasons include a vacuum leak, a bad fuel pump, or a dirty fuel injection. Lean bogs come about when the amount of fuel in your engine is less than the amount of air. Joined Feb 3, 2010 Messages 488. Now that we've identified why this happens, it can be caused by a multitude of different sources. If you were constantly running that way, then the engine wouldn’t run at all. Jun 5, 2012 #7 Re: How to tell if running lean, or rich? If your ATV is running rich, it implies that your engine is getting too much fuel and less air. A gear bog occurs when you are riding your ATV on high gear. If you are unable to clean out the gas tank effectively, it would be wise to replace it. To effectively clean out the transfer pump screen, you would need to pull it out and dip it inside a half-full bucket of water. Running extremely lean or overly rich leads to internal temperatures that can deviate outside the safe ranges the manufacturer has set for your engine. Most of these cheap ATVs use cheap knock-offs of a VM 19mm style carburetor to keep costs down. If your engine is bogging, try adjusting the needle on the carburetor slide. You must check the pressure before you embark on this exercise. Some of the problems caused by a warm evaporated emission system include a torn front intake boot and the internal pump sticking out. it will ccause it to bog. A motorcycle running lean won’t have excessive gas like this and likely won’t give off as strong of a gas smell. check your spark plug see if it was black, "YOU AREN'T FINISHED WHEN YOU LOSE YOUR FINISHED WHEN YOU QUIT, He is correct, pull your spark plug and see what color it is. If you are experiencing issues with your engine bogging under throttle, then you are not alone. For those of you that have experience riding ATV’s, feel free to share your experience and for those of you that are new to the sport, I hope you can take some of the content I share here on the site to have a more enjoyable riding experience. If dust gets in the carburetor, it clogs the jet or the main pilot, causing fuel flow issues. Always note that running rich can hurt your engine while running lean can blow it.eval(ez_write_tag([[300,250],'atvfreedom_com-leader-1','ezslot_9',116,'0','0'])); Therefore, it is crucial to ensure that your ATV’s engine has the appropriate fuel to air mixture. Ignited by the spark plug, the engine is given the power that it needs to propel forward. This site also participates in affiliate programs with Bluehost, Clickbank, CJ, ShareASale, and other sites. Let’s tear it up (responsibly)! A clogged transfer screen is also one of the reasons why your engine could be bogging.eval(ez_write_tag([[300,250],'atvfreedom_com-banner-1','ezslot_8',114,'0','0'])); Vehicles and other automobiles are often described as running lean or rich depending on their air and fuel consumption. BE sure to ride it around and get it warmed up before you do the test. The owner of this site is compensated for referring traffic and business to these companies. However, the most common one is a dirty air filter. This will let you know if it is starved for fuel or is using an excessive amount. To ascertain this, check for a grey coating on the screen. However, with time the system gets warmer and begins causing issues. I’m really the guy behind this site and i’m hoping to share with you what i’ve learned over the years. Here are some useful tips for preventing ATV engine backfire: Regularly change or clean the Air Filter. Only 250 miles, I though with the lack of use maybe old fuel problem . You need to be moving in high gear and hold it wide open. 08-22-2007, 09:27 PM. Zach. Gas engines burn both fuel and air to function correctly. honda6490. Clicking this will make more experts see the question and we will remind you when it gets answered. if you r running rich it will actually make your plug foul and wet. More often than not, you will find that the issue is carburetor related. This mostly occurs when your ATV runs out of fuel. Fixing bogging in an engine is a simple task provided you know what to do. If there is too much air than fuel in the engine, this is known as running lean. For a better experience, please enable JavaScript in your browser before proceeding. In order for your ATV to work, a specified balance of fuel and air enter into the combustion chamber. If your motorcycle is running rich, you’ll usually be able to smell a difference in the exhaust if you pay attention. How do you do the spark plug test? if it was an older car with a carburetor, it could be as simple as a minor adjustment, or rebuilding the carb. Arctic Cat ATV running rich. In other words, say I'm running rich, and my plugs are definatley all black. Drain the fuel inside and fill it anew. No bog, just running rich and fouling the plug after about 20 min. Most of the devices trigger a check engine light code when your engine either runs rich or lean. A black colored plug is also a sign of running rich.eval(ez_write_tag([[300,250],'atvfreedom_com-large-leaderboard-2','ezslot_6',115,'0','0'])); When your ATV is running lean, it means that your engine is getting too much air and less fuel. Want Answer 0. You only need two tools in life -- WD-40 and duct tape. If you are wondering why your Chinese ATV bogs under throttle, and what causes engine bogging, this article has some helpful answers, read on! What Is A Side By Side ATV And Should You Get One? We’re a forum community dedicated to Honda ATV owners & enthusiasts. If no changes have been made to the bike, and it previously ran well, a lean mixture can be traced to a leaking inlet manifold or leaking exhaust (often at the interface of header pipe and cylinder head). The oxygen sensor alerts your system when the condition is too rich meaning there’s too much fuel int the exhaust stream or too little oxygen in the exhaust stream. and if i am how do i adjust it. If it shouldn't move and does, use the duct tape. I know some of the signs of an atv that is running lean or rich but its been a while and i forget some of the signs... when I get a pipe I know I have to do a spark plug check- black and wet means rich, white means lean, going for a tan brown- light grey color for good jetting... right? It can also happen if the air boxes are opened, thus allowing in too much air.eval(ez_write_tag([[580,400],'atvfreedom_com-medrectangle-3','ezslot_1',111,'0','0'])); On the other hand, a rich bog occurs when there is too much fuel and not enough air in the engine. The throttle response is sluggish and slow.eval(ez_write_tag([[300,250],'atvfreedom_com-medrectangle-4','ezslot_4',112,'0','0'])); There are many reasons why your Chinese ATV bogs under full throttle. To be sure of whether your engine is running rich or lean, use a scanning device to check the engine control unit. If the air filter is clogged, air won’t pass through the filter, thus not reaching the engine. Another common problem is that the spark plug gets clogged up with carbon and/or oil and "fouls". Black=rich, white= lean, tan= perfect. If it is a leak, then you will hear a hissing sound. What Is The Top Speed Of The Polaris Phoenix 200 And How Can You Make It Faster? The most common causes when an engine running rich are check engine light, black smoke from the exhaust, high fuel consumption, poor engine performance, and sooty spark plugs. So how are you able to tell if your Chinese ATV is running rich or lean? running rich means there is too much fuel being metered into the engine. Clicking this will make more experts see the question and we will remind you when it gets answered. try leaning it out a little by adjusting yor mixture screw. If when you first snap the throttle it bogs you might be able to just fix this with an ajustment of the fuel screw. As this mixture gets into the combustion chamber, it gets ignited by a spark to produce enough power to get a vehicle functioning efficiently. Experiencing an engine bog under full throttle can be a frustrating issue. Use the table below to determine if the engine is running lean or rich. If not checked on time, running rich can damage your ATV’s catalytic converter by clogging it with some of the residue produced from burning the excess fuel. Running rich atv what can i do - Polaris ATV. A rich swamp often feels like a bubble, and the throttle can sometimes feel slow. A white spark plug is also an indication that your engine is running lean. To adjust the needle, unscrew the carburetor top and pull out the slide attached with the needle. Fuel issues on cheap 50-110cc youth ATVs that won’t stay running . We noted that a motorcycle running lean will have a clean spark plug. my 82' yamaha seca 400 is running rich. Another common reason for an engine bog is a dirty carburetor. There are several reasons why your engine might run rich such as the fuel injector getting stuck in the open position. The symptoms and causes will help you determine the exact issue and how to fix it. I have read a couple different things about holding WOT and then shutting it off? A motorcycle running rich will have a much dirtier and soot-looking covered tip. If there is any gasoline gunk in the gas tank, clean it out using a cleaning kit or other equipment. Alternatively, you can warm up your ATV and drive with the choke on. Also some of that gray on the side is some anti-seize. a rich mixture will not cause a backfire. Regularly check the transfer pump screen while it is in the water.eval(ez_write_tag([[300,250],'atvfreedom_com-leader-2','ezslot_11',118,'0','0'])); The next step would be to check the fuel level. kept doing this every time i started it until now it just wont start. Before you get to understand why your Chinese ATV bogs under throttle, you need to understand the three types of swamps. If it doesn't move and should, use the WD-40. A sluggish throttle is some of the ways of identifying that your ATV is running lean. Otherwise, this can cause severe issues with your ATV.