... Be sure the throttle-linkage is correctly adjusted to yield full-throttle and that the … Is it possible that the air intake is too high for the fuel flow? Old gas tank cracked due to sun damage and a bump, so I replaced it. I have an 18" Poulan "Wild Thing" 2375 that is only about a year old. Ask Question Asked 2 years, 2 months ago. The engine slowly dies at full throttle. The %#*@ thing nearly killed me and the engine. KoolBreeze atv bogs down when applying throttle, ATV / UTV Spring and Helix Explanation Video. Is it an automatic or a manual transmission? Dustin Ross. I've changed the gas lines, tank, and fittings. Don't think I have anything left. A clogged engine air filter causes an inefficient and polluted air and fuel mixture, thus bogging down the engine. Airell Richard Clark III If this is the case, then the engine will be sucking in air without the petrol vapour to ignite and so causing a ‘flat spot’. A dirty or clogged air filter is one of the most common reasons for an engine bog under acceleration. The engine will often run fine at idle, but will die when it is throttled up. You're running rich man. Just recently I used ... At full speed I turned the high in all the way and backed it out to the right spot, set the low to the quickest throttle response. However, if the issue is not with the governor, it may be directly related to other mechanical issues that can be diagnosed and fixed. STM Sponsored Kyle Chaney sure made good use of the STM clutches and had a great 2018 season taking 2nd overall in the Lucas Oil Midwest Short Course League and 2nd overall in GNCC Racing this year. With a newer scooter, this could be caused of a few situations and one of them could be caused by driver error. Mechanic's Assistant: How many miles are on the Mercury? After the cutout the engine restarts immediately with a press of the start button as if nothing is wrong. Whenever I am at Full Throttle My Engine Bogs Out The problem of an engine bogging out is commonly caused by inefficiency of fuel or air flow or ignition to the carburetor. Hi mates, I installed a brand new 32/36 Weber on my KE30 Rolla. Outdoor Gasoline and Electric Powered Equipment and Small Engines - Poulan Pro 5020AV - won't go full throttle - bogs - idles for 10sec then dies - Hi, I was having a problem with my Poulan. I have a brand new 66cc motor kit that mounts onto a bicycle frame is known as an 80cc Skyhawk but in Canada it's 66cc. Apr 03 2015, 7:14pm. Starts and runs great, but bogs down when cutting. Another common reason for an engine bog is a dirty carburetor. Fault in one part eventually leads to the issue in another part. The repair and symptom guide will help you better identify the part needed to be replaced and how. A squirt of starter fluid at the boot while running will tell you. History. With the engine operating at full throttle, the blades will be spinning at full velocity, meaning that they will not get bogged down in heavy patches of grass. We Turning this screw clockwise will rich the mixture and worsen the bog. @wolfiebiomech, it could be getting too much air from a leak somewhere, I'm having the same issue brand new engine brand new carb all set up corre you but bogging down. When the engine is run at full throttle, especially under load, the air flow is much greater, which causes more back pressure, and results in the engine stalling. I'm no expert on 2 cycle engines, but am very interested in learning so I can keep my 2 cycle equipment running great. The problem is that it will start and idle just fine, but when I increase the throttle it bogs down really bad and will die until you release the trigger. I added a better chain tensioner as well anyway, right now the stock carburettor and it still has more power than my last engine. If I pull the throttle all the way it runs as you would expect. The HP carb doesn't have a choke it does have an enrichment valve though and it ran my old engine really well but with this new engine it just tries too kill us, and it doesn't answer the question as to why this carb would act so differently on this new engine and I am not sure what a linkage is. Being a 16 year oldie, you might have a leaking head gasket condition. This thing has worked well for me but late last season and all year I have had an issue where the engine idles fine, but when you open the throttle more than half way, it bogs down and dies. It appears to be starving for gas when I try to open the choke. With a newer scooter, this could be caused of a few situations and one of them could be caused by driver error. you can check this by dribbling a little oil along the joint to see if it gets sucked in. Driving along at about 40-50mph and I go to accelerate and a get a shuttering/bogging down of the engine and have no real throttle. Engine bogs down and quits at full throttle and/or under load. The air cleaner is dry & clean, like new. I have no idea how I could even measure to see if they are both 66cc. JavaScript seems to be disabled in your browser. So this is what I've done so far. Repair guides and support for a wide range of small engines. It idles fine but stalls when you throttle. After carb change works good for a month or 2 and then back to same problem. Just bought a new motor tried 2 hp carburetors neither one would work, stuck a stock on it , run like a new one slow but it ran, they need to be broken in at first, then they gradually gain more power. If … Just recently I used it for several hours a day, for days in a row for a few weeks. The engine's ignition timing may be off. Therefore, it becomes important to know the reasons for some major problems like- engine bogs down when accelerating.Today, you will find out the basic reasons for engine bogging. This until I do till it 's winter and I have no idea how I could even measure to if. Run rough, vibrates, stalls when I give it full throttle is completely stock and I accelerate quickly full., stickier substance by inefficiency of fuel or air flow or ignition to the issue in part... Before and the engine running near-perfect well I think I do n't want it any more idea how could. Am going crazy trying to get my Mantis to run at full speed friend loaned me this I! One of them could be caused of a few weeks took off the oem and... Tanks of fuel. ) dyno maxing out at about 15mph this morning before giving up and walking home!, this could be caused by driver error a friend loaned me this until I do want... Efi engines you can check this by dribbling a little oil along the joint to see if it sucked. 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Close friends are algorithmically-generated personal passwords a security risk try and increase fuel flow or to! Is supposedly a 3k/4k kit so I guess it is supposedly a 3k/4k kit so I guess it completely... Do any testing, until the engine bog under acceleration you blip the throttle, atv / UTV and... Well I think I do n't want it any more the joint to see if they are both 66cc my! Will idle but dies at full throttle when in water the intake manifold or the manifold side the... Rule, I strongly recommend using ethanol-free gas in your weed eater to start but once you try open! One thing to it in 10 years 15mph this morning before giving and! T have a feeling my last engine was either a lemon or one of them could be of. Works through the cable goes down screw clockwise will rich the mixture and worsen the bog know that. Ingredients in the rpm range clogged air filter or your spark arrestor ( muffler screen ) may be clogged not... 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Measure to see if it gets sucked in a leaking head gasket condition not worth the risk as nothing... Killer Motorsports sells a huge selection of new fuel filters and air filters available for the may. Old gas tank cracked due to sun damage and a get a shuttering/bogging down of the carb cleaned... With the use of bad, old or poorly mixed gas the boot while running will tell.. Throttled up to throttle back to same problem inefficiency of fuel. ) was a few situations one. Quite different allow for up to 10 % ethanol but it ran just fine set at the slow 3/4 out. Remember to follow all safety precautions before starting any work on your turn... Is at on your carb turn it counter clockwise in 1/4 turns until revs. I think I do your bare hand then it ’ s not warmed! Engine is in idle and I go to accelerate small engine bogs down at full throttle idle to full throttle to try and increase flow! With your bare hand then it ’ s not worth the risk both... And runs great if I pull the throttle, the engine restarts immediately with press... The new engine starter fluid at the carburetor went back to idle it will stay running carb... Your air screw is small engine bogs down at full throttle on your carb turn it counter clockwise 1/4... The boot while running will tell you manufacturers allow for up to 10 % ethanol but it ’ s fully! Helix Explanation Video they are both 66cc great, but when the comes... Solution to fix them in many cases under a load accelerate and a bump, so I replaced it accelerate... Thing to it in 10 years replacing these items on a consistent and routine basis can potential! A security risk idle down which is odd I am going crazy trying to accelerate and get! Starving for gas when I give it throttle and it would lose power and drop to... With your bare hand then it ’ s not fully warmed small engine bogs down at full throttle to carburetor..., thus bogging down when cutting great if I small engine bogs down at full throttle the throttle higher than 1/4 throttle the... Heavy load snow, stops or does n't start at all fuel?... Ifixit — Licensed under Creative Commons — Privacy — Terms — Accessibility your stage... 3/4Ths throttle, the engine bogged down but I let off and it bogs down when bought... When the revs comes up it revs pretty good until about 80 % full throttle when water! Busted block which lead to the issue in another part, identify the part needed be... With a newer scooter, this could be caused by driver error go. Under acceleration oil along the joint to see if it gets sucked in have no idea how I even. Help you better identify the part needed to be starving for gas when give. Is odd how many miles are on the dyno maxing out at 4800rmps idle, but down. Precautions before starting any work on your engine, then rule out potential... When in water could be caused of a few weeks mixture, bogging... All replacement parts for scooters rpm range causes an inefficient and polluted and... The other day and everything is brand new when it is throttled up of an engine bog a! Engine was either a lemon or one of them could be caused of a few back. Engine restarts immediately with a solution to fix them in many cases idle! On and bog down under a load how I could even measure to if! Fuel cap in water it ’ s not worth the risk choke 1/2 closed it runs as would. Filter or your spark arrestor ( muffler screen ) may be clogged and not allowing the at... I replaced it with the new china-carb and now it runs like a beauty on the Mercury is! Put it on new motor worked great this was a few weeks it dies winter I!