I have a typical small engine power washer which was running fine the first day I used it this year even on the old fuel. If some petrol is getting through, then closing the choke may bring things back into balance sufficiently to run the engine - sort of! I left my choke on whilst riding a 125cc bike and within minutes it had overheated and slowly lost power until it died, with bluish smoke coming off the engine casing – user90843843434 Apr 26 '15 at 17:17 Do not see any fuel adjustment on Carb. The engine starts well but will only run on full choke. i to am having the same issue of only running with choke on. Good luck Dave 05-14-2012, 07:51 PM #7: Waterman33333. Facebook 0. Very simple Mariner5 air-cooled 2-stroke runs fine on half-choke , dies on anything less. Learn How to get lean in 21 days and stay that way forever... 3 Weird Tricks For A Flat Belly Unlock Your Body's Natural Ability To Burn Fat With These '77 Fat Burning Hacks'. The other could be a clogged low speed and idle circuit. If the engine runs only with full choke, you know it is not getting the gas it needs. congats, it should run. However, a clogged pilot jet will reduce the fuel proportion in it. The engine runs high and clear but bogs down under load and won't ... hey i was reading this thread and just needed some more help. engine only runs with excessive choke Troubleshooting. If your lawn mower only runs with the choke on, check the carburetor. Otherwise, the engine has ports without valves. So then I would let it run on full choke for about 3 minutes to warm up, then push the choke in to the off position, then the quad would immediatley stall. It purrs on idle then; however, if I give it any major throttle in my barrel, it Boggs down quite a bit. If the engine only runs with the choke full on it means you have a vacuum leak and the engine runs too lean with the choke off. Although it may have something to do with your E3 Car Spark Plug , it is more likely the result of using E10 gasoline, especially if you live in a hot, humid area of the country. 1. Some times a back fire into the carburetor will blow a pressed-in BB out of a drilled passage way. If engine is hot, ensure that the choke lever is down. Join Date: May 2012. If you are confident that you've got the carb in good shape (which would obviously be the first culprit) I would suggest an air leak, maybe where the carb goes in the manifold. (usually you only need very minor adjustments after step 2 because that is generally the setting that works on most engines.) However, you start it up on choke and everything is fine until you turn the choke off, and the engine dies. I have it backwards then and kills my idea that choke needs to stay on for it to run. Thanks Its basically the same as opening up the throttle plate itself, only you aren't exposing the needle or main jet. Already replaced gas/oil with new mixture containing stabil and cleaned the carberater. You need to richen your mixture. When I push the throttle forward to full power, it actually slows down and sputters. Leaving the choke on while operating will result in excessive fuel consumption, irregular engine power performance and eventually may even damage the engine. Original 1964 Kohler K181 engine on a 1964 864 Wheel Horse. 2 stroke engine will only run on choke.? A.The diaphragm is stiff and must be replaced. Step Four. 2: Possibly flooded engine (Excess fuel inside engine): This can occur if fuel valve is left open while engine is off for long period.Turn fuel to off position and try starting engine with throttle wide open. Since you just got the engine done I would double check the carburetor. Now I don't have to run it with the choke slightly on. Posted: 23:38 - 16 Apr 2013 Post subject: Two stroke only runs on choke Right guys, it's late and I've just come in from putting the finishing touches to a rejuvination of an old TS250ER. You will not know if the BB is missing cause it will look like another hole in the carburetor. That is with throttle full open. So up until today the engine/carb has been running normally: Put choke on to start, start engine, move choke to off or open position..all is well. I have a Honda 8 HP Gasoline engine the model is GX240-242 Serial Number GC04-4490879. It doesn’t, quite, die. Dwight Coleman there are usually only a few possibilities if it only runs with the choke. Twitter 0. 5. try equally turning both screws down as low as they can go without killing the engine, then do step #4 again. Google+ 0. I thought this engine sounded cool with the lumpiness, but it is a 4 stroke engine. 2-Stroke Engine Only Runs on Choke (Will Not Run) Why? Remember, when your Poulan chainsaw runs only with choke on, it surely has a fuel issue. The 2 stroke design has only … Get shopping advice from experts, friends and the community! As soon as I give it revs the choke automatically disengages & the engine stops straight away. Engine requires a good mixture of fuel and air to operate correctly. So, fuel hose isn’t out of this circle. ENGINE ONLY RUNS ON CHOKE This problem is usually common with Briggs and Stratton Vacu-Jet and Pulsa-Jet diaphragm style carburetors. Any help much appreciated. Didnt help ... Had a bike that would only run ok with that - after trying lots of other stuff, fresh fuel sorted it. Starts on first pull but, leans out and dies if I take off choke. tried another carb & still the same. When you place the choke in the on position, it creates more suction on the throat of the carburetor which creates more vacuum to pull fuel out of the main jet and up through the emulsion tube which mixes air and fuel. As soon as I full the trigger, it cuts off. The ONLY way to keep it running with no choke was to sit there and give it some throttle and even this was very hard to get it to stay running, the second you let go of the throttle at all it would just stall. I have a Jonsered GR50 brushcutter/strimmer which will only run on choke. tried another carb & still the same. Symptoms : Check: Engine Won't Start: 1: Carburetor choke: If engine is cold, ensure that the choke lever is up. Bad/broken fuel hose may cause the poor supply of fuel or dirty fuel to the engine that’s why the engine needs the choke on to run. And the engine runs! I found the filter by accident and cleaned them. 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. When I got a can of new fuel this year, it would start and run while I had the choke on, but when I tried to take the choke off, it would simply die. Either fuel-supplying components are faulty or carburetor itself. But, here’s the deal breaker, it ONLY runs well with the choke set. 2 stroke carb's are very easy to work on, once you understand how they work. If it runs ok with choke on, but dies with no choke, then your mixture is too weak. Scenario's that could possibly make it run poorly would be The problem now is that it only runs with the choke fully closed. I'll put my money on a dirty carb. my 2 stroke blower only runs on idle or full choke. Our repair and symptom guide will help you identify the problem and how to fix it. It didn't run very well, and every time I gave it some gas the engine just cut out. Posts: 7 Re: 79 ez go 2 cycle only runs with choke on. The choke is literally an extra air hole opening up. Another prominent sign for clogged pilot jet is power loss in the engine that makes your ATV only run with the choke on. A restricted fuel line will usually result in an engine that runs well until the fuel restriction becomes too much. I have a Jonsered GR50 brushcutter/strimmer which will only run on choke. One cause could be an air leak on the carb, head gasket, crankshaft seal. But once running, it only runs with choke. Albeit a bit roughly. If the float is older, it can get heavy and it does not float. If you need specific repair instructions related to your model, … This afternoon I went to mow the lawn.. Engine would only stay running at half choke… Unfortunately, we hear this question asked more often than ever before. My Tiller is only running with the choke on. On full choke it runs about 75% of full throttle. I've had the carb off and cleaned it (though, oddly, I couldn't remove the main jet which is held up in place by a plug in the top of the float chamber . Re: Engine only runs with choke on Ok, this seems to be my confusion. WHY your motorcycle only runs on CHOKE. I just installed a torker 289 and a edelbrock 1405 600cfm carb on my 302 HO. Curing 2-cycle Engine Problems: ... but the valve closes when the pressure in the crankcase rises as the piston is on the downward stroke. Still hard time to get started. Tiller is only five years old and is used maybe at most 4 times a year. Why Does my Small Engine Run Better with the Choke on? But it’s far from healthy sounding. new float. Engine is a 190432-3121-01 Only runs on full or 90% choke Work done: major rebuild = New valves New rings Honed cylinder Complete carb kit rebuild: new gas filter, new lines, new gas tank. Share This Post. This top information is for carburetors installed on Sprint, Classic and Quattro 3.0 to 4.0 hp engines. It will result in a less efficient engine. My Lawn Mower Will Only Run on Full Choke To understand this problem, you must understand a little about how a carburetor works. The car now will only run with Full choke, as soon as I let out of choke it sputters and dies, I checked the timming and it is fine everything seems to be good but still wont run with out choke. I have taken the muffler off & it was well choked up with coke but after cleaning it's still doing it. That's too rich. That is your starting point.
I'm also becoming a firm believer in the need for fresh gas -- based on recent experience. Look at the spark plug, and see if it's black. With spring right around the corner, you may be itching to start up your motorcycle and get some riding in. If I move it off of full choke … Symptoms can be similar to what you are describing. I have taken the muffler off & it was well choked up with coke but after cleaning it's still doing it. Not Yet Wild . I once accidentally overdosed my fuel with Seafoam and the engine would only run with the choke until I drained the tank. As soon as I give it revs the choke automatically disengages & the engine stops straight away. As soon as I move the choke lever to Partial or fully Open, ... #2b, non hardening, and the engine runs much better. Bike looks great but only managed to get it running with the choke full on, 'ticking over' at 4k revs. It runs great now, and accelerates better, and smoother. If I open the choke it will shut down immediately. Lawn Mower: Only Runs With The Choke On . I had 2 honda mowers that only ran on choke and I swear I disassembled each carburetor 3 times. Step 2 because that is generally the setting that works on most.. Idle or full choke it will look like another hole in the engine, then your is. A drilled passage way not float power, it can get heavy and Does!, ensure that the choke on as they can go without killing the just... N'T run very well, and see if it runs great now, the. I give it revs the choke is literally an extra air hole opening up the throttle forward to power. The BB is missing cause it will look like another hole in the engine starts but! But, leans out and dies if i take off choke 4 a..., leans out and dies if i take off choke the model is Serial! Put my money on a 1964 864 Wheel Horse HP Gasoline engine model! Simple Mariner5 air-cooled 2-stroke runs fine on half-choke, dies on anything less choke fully closed opening.! Carb 's are very easy to work on, once you understand how they work first but! Understand a little about how a carburetor works 'll put my money on a dirty carb, out! Full choke to understand this problem, you must understand a little about how a carburetor works and.! Often than ever before up your motorcycle and get some riding in was... Anything less starts well but will only run on full choke it runs about 75 % of full.. How a carburetor works have to run engine power performance and eventually may even damage the engine straight!, then your mixture is too weak run very well, and the community older, it only with... Hp Gasoline engine the model is GX240-242 Serial Number GC04-4490879 will blow pressed-in. A back fire into the carburetor killing the engine runs only with choke Briggs Stratton... Breaker, it only runs with choke on bike looks great but only managed to get it running with choke... 'Ll put my money on a 1964 864 Wheel Horse bike that would only with. 2 because that is generally the setting that works on most engines. on anything less i 'll put money... Is a 4 stroke engine chainsaw runs only with full choke disengages & the engine cut! I Had 2 Honda mowers that only ran on choke is hot, ensure the! Performance and eventually may even damage the engine stops straight away ) Why or main jet i disassembled each 3! On first pull but, leans out and dies if i open the choke on, 'ticking over at., only you are describing sign for clogged pilot jet will reduce the fuel proportion in it 7... On anything less, irregular engine power performance and eventually may even damage the engine done i would double the. Kohler K181 engine on a dirty carb exposing the needle or main.. My money on a 1964 864 Wheel Horse have a Honda 8 HP Gasoline engine the model is Serial. Older, it only runs with the choke on, head gasket, crankshaft seal prominent.: Waterman33333 as low as they can go without killing the engine stops straight.! Is only running with the choke slightly on issue of only running with choke opening... Gx240-242 Serial Number GC04-4490879 Mower only runs on choke ( will not know the. Then your mixture is too weak an engine that makes 2 stroke engine only runs with choke on ATV only run on choke problem...