That brass collar with the plastic plug in it - thread a sheet metal screw in there and pry it out with a pair of side-cutter pliers. How do I - Answered by a verified Motorcycle Mechanic Since it runs right with the choke on, I would almost place a small wager that is the problem. I have rebuilt the 3 carbs and made sure each passage was not restricted. Basically it's start, putter putter die. It runs on the choke but not when the choke is pushed in. Bike won't run with the choke closed? Joined: Sep 2, 2008 Messages: 12 Then you can adjust your " carb.... - … bike dies instantly if the choke is not on, if the choke is on it runs perfectly. Q: Can I register this bike in my state? The bike starts and runs smooth with the choke on. You are correct, the mixture needs altering. We do not recommend that any type of outdoor power equipment be operated after initial warm-up and with the choke control outside of the normal run position for longer than 5 minutes. I have an '05 mini pit bike 50cc 2 stroke. Enjoy! A: These bikes are LEAN from the factory to meet emissions, Doing the Carb mod like in my Hawk video is the single best improvement you can do for more power and smoother running. To summarize, if it only runs when more fuel is applied to the air fuel mixture via actuating the choke, it must be getting the air from somewhere else or it isn't getting enough fuel to begin with. Bike ticks over on choke but won't run if touch throttle just dies cleaned carbs checked fuel sparks fine pumps good fuel gets to float side of carbs and not to slider side Posted by … You're going to have to drop the float bowl and clean out the jets. Jump to Latest Follow 1 - 20 of 27 Posts. The bike won't start with out it and won't run with it. The 2 main reasons for the bike not running without choke are either because of problems in the air flow or because of … Since you have the same bike, mine is white too, May be you can answer my other question about the catalytic converter. Maybe you can’t even get it started. Quickly Fix a Generator that ONLY Runs on Choke/Half-Choke. The pilot jet is located below the idle adjustment screw[black plastic], and is easy to remove. could someone tell me how fix this problem. does it just need the gas drained, im guessing the carb. i have a KTM 450 EXC 2004 model. This would also be a good time to install an in-line fuel filter between the tank and carb. The bike is now ready to ride. It has done about 800 miles. It runs pretty good on choke but spits and sputters and pops in the exhaust off choke and it won't idle. When the engine starts well, let it run for ten seconds and then turn the choke to off or run position. This guide will help you troubleshoot the most common causes for an ATV that won’t start. If your bike isn’t idling right, warm it up and take note whether adding choke (making the mix richer) or cracking the throttle ever so slightly (making leaner) makes the bike change behavior. Start putter, putter, putter die. It ran fine until one day it wouldn't run without the choke. So when the choke is turned off, the engine gets too little fuel and too much air for it to run and it stalls. Start,vrrrooooooooooom and idle won't slow down then I push the choke back in or take it off and the bike won't start. Bike runs rough on start up and then when I blip the throttle just a little bit the bike dies again. Once bike is warm, pull the choke lever in the open position (as shown in image3 with red arrow, the lever in the DOWN position). In some cases, the bikes won’t run until after 10-20 start attempts. Oh, and don't listen to these guys giving you crap. Let us know if there is rust. If so i have adjusted that already as it was too low and bike … All that you probably did was burn more gas than normal and turn your spark plug black. bike won't run without choke on? If there is rust blocking a jet, the Sea Foam won't help. Another issue on the 49 CC HS motor is the location of the pilot jet. Start up with the choke in position were it will start, run a few minutes to warm up engine. The bike won't run with the choke on. In certain weather conditions, you may put the choke lever in the middle or lower position to help make it easier to start. The bike will not idle off of choke. Q: my bike won't run with the choke off, it spits, coughs and stalls. In fact when it reaches around 75-80°F I rarely have to use the choke to start my Honda Shadow. I don't think there is anything to worry about with riding your bike for 10 minutes on half choke. The ATV won’t start – the engine is not turning over If your ATV […] You won’t harm your bike by not using a choke and you won’t harm your bike by using a choke to start it. The bike runs richer, so uses more fuel and will eventually foul it's plugs. High speed mixture needle is in the body of the carb under below the primer. It will run on choke at about 3000 rpm. Hondas used them on most all four strokes. Often the jet is over looked and when stopped up can cause a lot of problems [choke must be on, won't idle, won't take gas, etc]. From idle to plane the boat will bog down unless I choke it once it planes it runs great. Leaving the choke on while operating will result in excessive fuel consumption, irregular engine power performance and eventually may even damage the engine. And WOT. You could have an air leak on the intake manifold side or a clog somewhere in the carburetor. The choke circuit on Mikuni carbs isn't really a true choke, it is an enrichening circuit. Choose the topic that describes your ATVs behavior the best. Hi guys had some trouble bike won’t run, it cuts out if I don’t hold the throttle, doesn’t sound right either popping when throttle is being pulled but it has to be pulled to run, the other day was riding it ok but every time I stopped big flames where coming for one exhaust every time I was stopped, and I notice one exhaust is hotter than the other so i have a 2001 yamaha ttr-90, just drove it after sitting all winter. they lose power and stall. Then after a while it won't start at all. It only does it when bike is warm and my bike won't run with choke on when it is warm. I can get the bike to run now, but only when the choke is half or fully open. I've tried adjusting the screw for the carb but it didnt do anything. Harley Davidson Community Harley Davidson Community If a motorcycle or ATV only runs with the choke on, it’s because the richer “choke on” mixture is actually closer to the engine’s normal operating fuel mixture than the leaner “choke off” mixture. lately when i go to start the bike, its VERY hard to start. Some issues are easy to fix at home, while others require assistance from a mechanic. The fact that it won't run without the choke on means that the main circuit is running too lean. Won't idle/runs decent on choke. I am betting that carb on your bike has an enrichener. The choke on my 1979 suzuki GS 850 keeps sticking. Another running issue with the Aerox bikes is that they often “cut out”, i.e. If that doesn’t work, set the choke to a halfway position between on and off and pull the starter rope three more times. My bike didn't start on 3 occasions because of fuel deposits on the spark plug (a local mechanic cleaned the spark plug and the bike started) and the authorized service center advised a change of spark plug, engine oil, drain cock packing, gasket cylinder head cov, gasket exhaust pipe, tube fuel, engine head cleaning, carb calibration and new o-rings. I have a 2003 KTM 450SX. A: Most states will register this bike, many will not. Reasons Why Motorcycle Won’t Run Without Choke. ... Now that it’s running, you go to take it off choke to half-choke, ... having one that is too narrow is likely to damage the brass jet when you dry to turn it and the screwdriver won’t have even pressure on both slots that it … Sorry but where is the mix screw and how much do I adjust it? Turn mixture screw all the way in, don't screw hard in (Gentle) could damage screw seating, listen to engine when it starts to faulter gradually turn screw out, listening to the engine sound till she is running smooth on tickover. Bike Loses Power and Stalls. If I take the choke off after warming up, the bike idles somewhat rough, and will not rev above idle.. it coughs and sputters and stalls. On a cold start. hi guys. Is that the screw i adjust for idle speed? À 2 stroke or 4 stroke that won’t stay running is actually a fairly common problem. I did it again before I put it back together. I got my bike out of storage, and cleaned the carb once during the winter. Whether it runs great or it runs rough after starting it, there’s many reasons why your dirt bike won’t idle properly. I have ridden 130 miles with the choke on before. When I took apart the carb the previous owner had a 42 pilot and a 110 main. Anyone have any ideas, thanks The choke circuit is a separate feed than the other jets and that's why it is doing that. It jus keeps cranking over will not run at all. There are some fairly easy ways to remove it. 1989 Evinrude 150 xp with muff on it idles ok a little sneezing. Only way the bike will run on a cold start is with choke off. #5 makotosun, Sep 10, 2008. madassguerrilla New Member. The bike ran a bit rough when I bought it - similar to now, it had issues with the choke being off. has some sort of blockage. Written by Robert Van Nuck. Bike won't Run with Choke Off. If it doesn’t start when it is in the halfway position, wait for … When you clean the bike, have a feel of the choke cable operation, you should feel it close. I inherited a 1974 Honda xl100 from my dad this summer, I installed a new carburetor and got rid of the rust in the tank (apple cider vinegar worked really well). Most all two strokes use enricheners, with few exceptions. A true choke is a butterfly plate in the throat of the carburetor in front of the slide. If that’s you right now, you’re in the right place. If you live in a hot climate, it might not be necessary to start your bike with the choke. I can shut the choke off and it will continue to run at 3000rpm if I keep it there with the throttle, but it will pop through the exhaust. Now, let us investigate the reasons for why your motorcycle is not running without the choke in detail. My bike wont run unless the choke is at least half way. (If you ever own a Guzzi, the O-rings swell, the dealers tune the bike to run on constant choke and the *****y thing does 15 mpg and fouls the plugs every 50 miles ). The whole brass thing can go, it just holds the plug. This problem is common during chilly weather or when the bike has been in disuse for long. In the water it doesn’t want to idle when in gear . I have had the EXACT SAME SYMPTOMS on 5-6 different bikes, and in each case it was the same thing. 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