Is It Bad To Run An Engine With The Choke On

The best blow-through carb on the market is absolutely useless with a bad carb hat on top of it. The generator will start and appears to run at speed with the choke on but it dies when I move it to run. Down here Honda give 5 year warranties on their engines and some parts are lifetime for the original owner. Slowly reduce the speed and as the engine tends to run a little rough, open the idle needle screw just enough to make it run smoothly. The system is available on the GCV140, GCV160 and GCV190. I find that most often when an engine will only run with choke, the jets on the carb are plugged. NOTE: With a properly reconditioned carburetor, more than a couple of flywheel revolutions at full choke may flood the cylinders. If you have an n. If I was looking at and considering a carb with no horn, then a choke would not be in the picture anyway. Engines Podcast Engines of Our Ingenuity 2619: Space Medicine And The Good, Bad, And Ugly Of The News (Oct. Or popping and spitting occurs through the pipe on deceleration with a closed throttle. When required to run the engine out of fuel, leave the throttle control in the fast position and run until the engine stops. 2) Choke pull-off opening too much. Interference is either radiated - that is, picked up. Bad news: When I went to picked it up on Friday it was running like crap in the shop. So, engine carbon cleaning must do prevention first. Steam is normal, and may appear to be white smoke on a cold morning due to condensation. Close the choke to ON position. Check out our 2100 carburetor kits. It had been put up for a while ( a few months), it wouldn't start when i went to get it out. After several carburetor dismantles I found the emulsion tube was stuck on a burr and needed to be screwed in about 4 more turns. The best course of action is to take your vehicle to an Omaha auto service professional, but here are a few things it could be…. All engines are programmed to run rich when cold. If the fuel pump is failing it might would still run but only with the choke out. NOTE: With a properly reconditioned carburetor, more than a couple of flywheel revolutions at full choke may flood the cylinders. If you use an auto diagnostic tool to scan the trouble code from your check engine light and it shows P0172, this means the exhaust gases have an abundance of gasoline in them as they are coming out of the combustion chamber. * Note: If you have an automatic choke try disabling the choke and holding it all the way open with a zip tie or other device. It will run and let me mow for amount 5-10 minutes then act like it is starving for fuel unless I pull out the choke. The electric clutch is bolted onto the new engine the same way it was bolted onto your old engine. If the setting is incorrect, loosen the three screws clamping the choke body in place and rotate the choke cover left or right until the marks align. Lets hope that your snowblower will run. 4-stroke starting tips With the four-stroke revolution bumping the rev limiter, more and more two-stroke fiends are entering the world of cams and valves and pumper carbs. Generally a bad cap will only allow the engine to run for a minute or so and then shut down, but I always check the cap first. (1) Check fuel pump. The second step in the FAST test is running the small engine without the air filter. Your engine may still start and run, but it probably won't run as well. Remember that a simple solution is not always the correct one, or may be only a partial solution. The effect of engine speed on the maximum tolerable exhaust back pressure at full load for the above example is shown in Figure 8. Engines need more fuel to start and run when they are cold. Do I just have to run the Edelbrock Engine Oil Supplement with Zinc Additive for the cam break-in? The Edelbrock engine oil supplement must be used with every oil change with a flat tappet camshaft unless the oil your running has zinc and is designed for flat tappet camshafts. Turned ignition and nothing, not a sound. Most carb cleaners are combustible and spraying it down an intake while a motor is running is a common practice. HELP anything come to your mind? A: You might have burned out that new module you put in because you did not put in a new ignition coil at the same time. Unfortunately, I reach max engine rpm at about 2/3 to 3/4 choke opening. Lawn Mower REPAIR Auto Choke Briggs and Stratton Sears Craftsman fix. Having a hard time getting the engine started, 2. Below are several key signs of a bad throttle position. This page has troubleshooting and repair advice for fixing a riding mower that won't run with the choke off. In general, a carbureted engine with a properly-adjusted automatic choke will cold-start and run as good as a fuel-injected engine having a similar grind camshaft—but—the carbureted engine may produce more harmful tailpipe emissions in the process, and perhaps the cold-idle speeds will be higher. Rotate the Idle Speed screw counter -clockwise, until tachometer reads about 600 -700 rpm’s (as low as it can idle, with the engine still running). 7:1 by weight, which works out to about 9000:1 by volume. Houston Public Media provides informative, thought-provoking and entertaining content through a multi-media platform that includes TV 8, News 88. This will cause the engine to go idle or drag a lot. Just right= starts easily, accelerates well from a dead start, revs to full rpm without missing. So, the engine runs rough (lean) and if it gets bad enough, may not run at all. The engine should be allowed to cool for half an hour before. The automatic choke regulates the air/fuel mixture during engine start up. • Even after having it run and riding it for 30-45 minutes, if I push the choke all the way in (turning it off), the bike will run but it doesn't seem to be inputting any gas to the engine. Follow the steps below to get your snow blower fired-up and running with less frustration. I replaced the gasoline just to be safe as the owner had not run the generator for several years. My Craftsman front tine tiller ( about 30 years old but runs and looks good) will only run with choke completely on. Kawasaki Jet skis are know to have issues with their round body carbs. Where can I pick up a feed to do this? Unfortunately, this can be a bit confusing and also a bit lengthy. Bad or contaminated fuel Check the fuel. It's just a little tricky starting them in cold weather, but keep the engine at a high RPM for a minute or so & you're good to go. In this condition the closed choke provides enough extra fuel to enter the engine to overcome the lack of fuel flowing through the other passages. The good news is, once the old gas has been consumed and the tank is topped off with fresh fuel, the problem should cure itself. If you are rejetting for a trip to a high altitude the engine will run rich in the mountains, then smaller number main and pilot/slow jets will be needed. Giving poor mileage. However a mixture that is too rich can choke the engine and effect the performance and cause starting problems. Finally got it started with starter fluid and it'd only idle with the choke on, choke off it'll run, but pops, doesn't run well and won't idle. Vehicles on the road in 2018. voltage to the choke might change with engine rpm. As soon as the engine starts to run, the air spun from the flywheel fan blows the choke open. When the brake shoes ware down, brake dust gets embedded in the brake shoes and the brake drum. But if you don't ground the magneto with the switch, the small engine won't stop. 4 With the emergency brake on and the gearshift in Park or Neutral, start the engine and let it run for a few minutes. Warmed on full choke until it stalled. The worst it can happen, is if the generator engine needs to be serviced. The choke may be partially closed with a warm engine. 20 Do not remove deck wheels. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing. I run this genset every month under full load for an hour and it has less than 200 hours on it. Other notes are that I ran it until empty. As soon as you hear it pop (try to start), immediately take it off of choke and pull it a few more times. If the seal goes bad it will leak case pressure and drop your rpm considerably, or in the worse case scenario, keep the engine from running. Engine runs rough (no load) Engine shuts down Engine runs rough (with load) Engine runs, but generator does not provide power Possible Cause Generator switch in the off " 0 " position Choke knob in the wrong position No fuel Bad or contaminated fuel Not enough oil in the engine Dirty air filter No fuel at the carburetor Engine flooded No spark. When you have checked all the possible causes listed and you are still experiencing the problem, see your John Deere dealer. caused by bad gas, dirt in gas, or vacuum leak or ignition problems causing engine spitback. Without full choke engagement, an engine may be hard to start or not start at all. The expansion of the combustion gases pushes the piston during the power stroke. The 1 1/2 turn is a base setting and may not even be the correct setting for your engine/carb combination(as Don indicated) A settibg too closed will not let the engine idle at all. Or, on a rare occasion, the solid state (electronic igniton) magneto could be bad. In most cases a tractor only running with the choke pulled out indicates trash and/or contamination being present in the carburetor. If the sparkplug is wet, the engine has been flooded. Revving the engine hard doesn't clear it. When I bought my Outrage with a somewhat more evolved dinosaur, a 1992 Suzuki 200, I tried to use the same procedure. If the kids report hard starting, check the choke. Single-lead suppressor for AM interference. If your bike is tuned up properly, you don't need to idle and warm up for more than a minute or two before it's safe to ride off with the choke still on. This results in a very rich mixture that allows the engine to fire either once or two times, or just run slowly. It ran well at all throttle positions. Also, the throttle must be all the way up. 2 months is a bit long but if it hasn't siezed then you've probably gotten away with it. Any carb gurus out there want to help this padawan learner? I'm stumped on this one never had an engine die when choke is turned on. NEVER run the choke longer than you need to. I know on my bike (same carbed engine) I need to run my choke about one third to one half for a couple of miles when. What you’ll experience is an engine. It seems to run perfectly with the choke on (other than the fact that it idles real high as normal with the choke on), it revs and runs smoothly with the choke on, no backfiring, no flames and no popping. The engine should be allowed to cool for half an hour before. The carburetor controls the air and fuel mixture to the engine. Good tires. You either have air coming in from somewhere it's not supposed to be or you're not getting enough fuel to the engine. Now back it out 1 1/2 turns. A mower failing to run without having the choke fully engaged is often the result of a faulty carburetor that either needs to be replaced or cleaned. 223 low idle and choke problems; What does your 223 idle at? Post by Renegade » Sat Nov 20, 2010 1:10 am Hello all, I own a 1956 Ford F-100 that has a 223 that has zero miles on a rebuild, I just can't get it running right. As it warms up the butterfly should open. In some cases it may only happen under certain conditions, for example only after the mower gets hot, or only when the fuel level gets low. If the kids report hard starting, check the choke. need help my b&s 21hp vtwin will only run with choke on any advice? I have a 21 hp briggs and stratton vtwin engine that will only run with the choke on. It had been put up for a while ( a few months), it wouldn't start when i went to get it out. When starting the car after having the carb off or drained of fuel, have a helper spray Gumout carb cleaner to keep it running, otherwise it may lean out and backfire. A setting too far out will make the engine run rough and may die. Lawn mower repair technicians say old gasoline is one of the main suspects when a mower won’t start. When required to run the engine out of fuel, leave the throttle control in the fast position and run until the engine stops. Drain the gasoline at the end of each mowing season. If you use an auto diagnostic tool to scan the trouble code from your check engine light and it shows P0172, this means the exhaust gases have an abundance of gasoline in them as they are coming out of the combustion chamber. The engine light does not come on during this point. The tunnel port engines just didn't have lasting power. Un fortunatly I can't look up your 83 for the choke wire, But it does matter if the choke needs it to open while the engine warms up. On older engines with carburetors, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. The Pump is causing to much load on the Engine. As the engine warms-up and starts burning fuel more efficiently, the choke plate begins to open, which slowly lets more air in and leans-out the air/fuel mixture. 1) See notes above. Now if the choke plate is opened, the engine starts running normally. The indicator hand of the gauge should rest between the letters “M” and “H” when the engine is running fast idle. We have thousands of Bad Boy Mower Parts in stock. This devise does not make the engine run richer in any way just faster. That's handy when the engine is cold, first starting up, and running quite slowly. However, whenever I shift into gear and attempt to pull away, the engine dies as soon as the bike begins to move. Luckily, it had a manual choke yet in those days because I was able to limp it those 100 miles with the choke pulled out on the dash. The air regulator heater element is switched on by the fuel pump relay, which in turn is operated by the ECU. 5 engine, pull choke to crank , it runs for a few seconds then dies. 17 Never leave key in ignition, especially around children. (3) Check for choke thermostatic coil binding in well or housing. If you have an n. It will also stall at a stop if it's not up to temperature, and as it warms up you need to keep compensating by pushing the choke knob in. Prime or Choke the engine: If the engine has a primer or choke, use them. This afternoon I went to mow the lawn. I ran engine for 15 minutes at all throttle settings and no choke. On older engines with carburetors, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. Tecumseh Lawnmower Snowblower Engine Floods or Leaks If the clip holding the inlet valve needle to the float is not pointed towards the intake/choke end of the carburetor, the needle valve may stick causing gas to leak out of the carburetor intake. Kawasaki Jet Ski Carburetor Issues. It starts up fine, but surges and eventually dies if I push the choke in. Now when the gas pedal is pushed in, the cart will sit there and turn over like its going to take off but it's like it's not getting any gas until the choke is held in till the motor kicks on then let go of the choke and it will run. After the engine is stopped, if you can spin the fan by hand and it free-wheels more than about 1 turn, it's bad. Then I adjusted bowl needle valve out 1/2 turn at a time until it ran on no choke and ran smoothly. Bag-on-demand - quickly switch from mulching to bagging in seconds by flipping the quick-change lever. The particulars of engine rebuild was a complete machine overhaul by qualified shop with many years on flatheads. Every truly crappy day begins with a car that won’t start. 4 With the emergency brake on and the gearshift in Park or Neutral, start the engine and let it run for a few minutes. On a marine engine with an electric choke, the wire that runs from the ignition switch to the choke can become corroded and fail to carry the proper current. If you own several small engines, it may pay to buy a tester To learn how to use it, read How to Test an Ignition Coil. If the bike has been run in the past two hours and the engine is still warm, the engine should start without using the choke. If the fuel pump is failing it might would still run but only with the choke out. It will also stall at a stop if it's not up to temperature, and as it warms up you need to keep compensating by pushing the choke knob in. Re: Choke to start every time. It runs smooth when I’m holding the choke out. The engine light does not come on during this point. Battery cable is bad. Fan shouldn't "free wheel" for more than a turn or two after the engine stops. wont start. It starts OK on full choke but as soon as I begin to push the choke back it dies. Screw the screw in until the engine runs erattic (lean). When the venturi is covered, and the throttle wide open, a lot of fuel is sucked in by the carburetor engine via the main jet as well as the idle jet. Not sure butit appears not to be firing on all cylinders. Cold stalling is an indication of lean choke and overly rich conditions if your engine is belching a lot of thick, black smoke from. The easiest way to tell if your engine is flooded with gas is to remove the spark plug. When the flap is open - that's the run position. Drain the gasoline at the end of each mowing season. A bad mass air flow sensor can cause problems such as engine hesitation, engine stalling, engine running rich, lack of power, poor accelerating, hard starting or no starting. This user-friendly system is truly automatic, eliminating levers and cables. Re: DL/DA 50 Walbro Carb does not suck Fuel when Choke is Cloesd Yes a bad front bearing can. Chuck's Lawn Mower Repair Page. Choke valves are generally used in naturally aspirated engines with carburetors to supply a richer fuel mixture when starting the engine. You don’t want to lean out a 2 stroke due to vacuum leaks! Kiss that engine goodbye! Throttle shaft seals can also cause vacuum leaks and are the most difficult to replace. Battery is defective. Holley products for GM's popular LS engine are dominating the LS scene as well. Most of the time you have heard "It's supposedly rebuilt," or "It was running great when we quit driving it" Well, you really don't know what you have till you either run it or tear it down. The blue or white smoke is now pouring out from the engine and you know right away that this is going to take at the very least, one or possibly two new Briggs Engine Parts. Hard starting, especially when cold, can be caused by any problem leading to a lean condition. Is there a way to check the auto choke to see if it is working properly or possibly checking to see if there is power going to it?. One of the consequences of operating a Stihl trimmer with the choke on or a fuel mixture that has too much oil is that the engine smokes, which fills the spark arrestor screen with carbon deposits. Otherwise, you will run the engine too "rich," causing black smoke and poor fuel economy. If for any reason, the engine had lost compression or valve is stuck open or closed, call the qualified technician. Properly setting timing may cure ills without getting into carbs. Replace the air cleaner assembly and start the engine for final carburetor adjustments. In some cases it may only happen under certain conditions, for example only after the mower gets hot, or only when the fuel level gets low. The choke is pulled to its maximum when starting a cold engine, but should be pushed back to neutral once the engine is started. 1952 8N Running bad under load/needs choke - Ford 9N, 2N, 8N Forum - Yesterday's Tractors Jump to forum order in days for posts. The choke being closed can cause the engine to get too much fuel on start up. These yamahas are very funny about air leaks and run lean so check the airbox and hoses again just to make sure also. They are designed to be run in a handpiece, which has a lot more torque than you can produce with two fingers. After 30 seconds, push the choke in all the way, use the throttle to keep the engine idling. -Swapped in remanufactured 5. In the early years of fuel injection, stock. I run this genset every month under full load for an hour and it has less than 200 hours on it. and if I screw all in, the engine will dies. Briggs&Stratton won't run w/o choke There is no water in the fuel, replaced fuel pump diaphragm's and springs. I have a Husqvarna 460 Rancher that will not start when it is hot when I shut it off to put fuel in it it has to cool down for 30 minutes before it will start. So, again, you’re a man (or a woman) who should know stuff…like engines. 223 low idle and choke problems; What does your 223 idle at? Post by Renegade » Sat Nov 20, 2010 1:10 am Hello all, I own a 1956 Ford F-100 that has a 223 that has zero miles on a rebuild, I just can't get it running right. One side of the voltage stabilizer is 12V input and the other side is 10V output but both sides have two male terminals. Ensure fuel is at the proper level. If the gas smells stale it needs to be drained and flushed. If the engine runs satisfactorily in the above test, it should run normally with a known good governor module con- nected. re: ford 460 engine: neil: 8-6-11 : i have a 1994 e 350 shuttle bus. The slug itself is actually smaller then the tightest Full choke. i had an '84 silverado that wouldn't run worth a darn untill it was warmed up. 2) The combined effect of the closed throttle and elevated engine rpm is to create a fairly strong vacuum in the intake manifold. Remember that a simple solution is not always the correct one, or may be only a partial solution. Engine starts, then dies within a few seconds. I don't think it will do anything as long as it seems to be running fine. We also recommend that if a unit will be left unused for more than 30 days that it be stored "dry. I have also ordered a new distributor cap and rotor arm, the leads will be next on my very long list by the sound of it. A weak battery, have it load tested. If running the engine with the choke on improves performance even a little, the jet is too small. Is this an air leak? This is the Champion 4500 watt with the Honda knock-off engine. Check for codes first just in case. Once warm, as in this video, one kick ought to do it! Yet ahead, there's still the internet scuttlebutt and portent of "how bad these engines restart after laying them on their side". If engine is running too rich at higher elevation, order a smaller jet from the chart. Battery is defective. Any carb gurus out there want to help this padawan learner? I'm stumped on this one never had an engine die when choke is turned on. I have had the truck for a year and in that time I have done alot of work on the truck to get it running and driving like it should. Flooding! The gas will then run out on the ground or into the crankcase, diluting the oil and possibly ruining the engine. Every truly crappy day begins with a car that won’t start. CHOKE position when starting a cold engine. Replace this leaky gasket and the carb may not need to be. Check out all of TPG’s mileage run series: TPG challenged 3 people to fly as far as they could for $725 — here’s what happened How and why to book a mileage run Why mileage runs might be a bad idea. Randy Dodge Dakota JOIN HERE 7/14/2013 01:12:01: RE: 4. Will start and run with the choke 7/8 closed, as I increase the throttle I can open the choke more until the throttle is wide and the choke is closed. why do carbureted engins run like crap when they're started cold? my 4-wheeler won't get out of its own way and backfires untill it warms up for a few minutes. Once the engine is warmed-up, the choke plate will be wide open allowing the carb to run as it is supposed to with the correct metering of fuel and air. Runs perfect. 1) Set choke a little tighter & try it. Run the engine for five minutes at half throttle to bring it to its operating temperature. Fuel goes bad after time, and the first circuit/jet to clog with varnished up fuel is the pilot jet. If the engine won't run below 2000 RPM then that is another problem. Drain the gasoline at the end of each mowing season. Engine will only run on only full choke. Generally a bad cap will only allow the engine to run for a minute or so and then shut down, but I always check the cap first. Depending on the horse power of the engine, the larger jet part number goes on the RIGHT side and the smaller jet part number jet goes on the LEFT. as it warm up the spring in the thermostat heats up and opens the choke. Any carb gurus out there want to help this padawan learner? I'm stumped on this one never had an engine die when choke is turned on. Turning the screw clockwise will case the machine to run slower. Problem statement: Motor suddenly running rought on 2 cylinders and tachometer does not register (the needle does not move); this happen one day suddenly while I had been riding the bike on regular basis, at least once a week, and the bike has only 6500 miles since I bought it new 10 years ago. The best course of action is to take your vehicle to an Omaha auto service professional, but here are a few things it could be…. Cranking it with the plug removed will evaporate the gas. This was the case even. engine ran very rough idle stalled could not run without foot on gas, ground vacuum hose for the 90 degree boot underneath intake manifold wore out and collapsed. (4) Check for vacuum leak with integral choke system. Problem 2 - Engine shuts down. You have to finish races to win them, though. 1997 Ram 1500 4x4 Laramie. 5 engine, pull choke to crank , it runs for a few seconds then dies. Re: V-Star Classic - Idles with choke, but won't rev I let my bike sit about a month and ran into a similar problem. Car radio interference originates usually in the ignition system, the charging circuit or among electrical accessories. Revving the engine hard doesn't clear it. The expansion of the combustion gases pushes the piston during the power stroke. It is a crf100f if that helps and one more question when i use only my rear brake to stop even at slow speeds it squeaks pretty loud does this mean i need new brakes?. 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. Engine: Only Runs With The Choke On. It ran well at all throttle positions. The idle port allows the engine to operate under this. Rebuilt Kits & Solenoid Components. One the engine has fully heated and the engine dropped to its lowest rpm (choke all the way off), then the locknut screw (hence the 10mm wrench) is adjusted until the engine is idling at about 850-900 rpms. If it takes much longer or never exceeds the 1/4 line on the gauge, the t-stat is probably bad. The choke is not typically used when the engine is warm and recently in use, but the "Full Choke" option is often selected when starting the engine from a "cold start. slow position when not required to run engine out of fuel. Simply put, yes. horizontal engine. Run it with the air cleaner off and watch the thoat of the carb. Down here Honda give 5 year warranties on their engines and some parts are lifetime for the original owner. I'm told by a knowledgeable RV mechanic that when Onan added a catalytic converter to this engine, the overheat problems started and that fuel in the carburetor bowl can splash out internally and ignite shutting down the genset until it cools. If I rev the engine, it runs but runs bad like it has a miss and pops and flames shoot out the pipes. To Choke or Not to Choke. 2 Husky 455's, speeco 22 ton splitter, stihl 180c-be for the wifey. No Battery Charger DC output. engine won’t run FUEL - AIR - COMPRESSION - SPARK 53 The High Idle Adjustment (usually indicated by the letter “H” stamped on the carb) is a valve that controls fuel flow when the engine is running at it’s fastest speed. Propane and Natural Gas Do not Gum up or go bad. I don't have a choke on any of my cars & you don't need it as long as you drive it above freezing. If your engines runs consistently well all of the time, then don't worry about changing the auto choke. The temp gauge should stabilize at about 1/3 of maximum after 5-7 minutes of driving. Put the motor into gear and go for a short ride; then idle down and readjust. Revving the engine hard doesn't clear it. Runs smoothly with choke on, with or without air filter (it is clean and new). Symptoms of a Bad Fuel Pressure Regulator A good fuel pressure indicator always regulates the level of fuel going through it at an optimum level. You've been running the fuel mix far too rich. Park the mower on level ground, and wait about 15 minutes for the gas to evaporate. Then, turn the idle mixture screw slowly clockwise until the engine begins to slow. When the relay is energized, the solenoid closes the choke allowing the engine to start easily when cold. reset choke and runs for a few seconds then dies even when i move choke off only runs for a few seconds. If it does not then the carb probably has some dirt in there and needs to be serviced. With no choke it runs, but stumbles slightly. The bike will be prone to overheating, rev too high at idle when it's warmed up and give you rubbish mpg. What I'm saying is you must be going for performance so forget the choke. When the engine starts, the choke should open partially and continue to open as the engine warms up. Check engine light still on it came out of garage once after tuneup and light was off running soomthly not using a lot of gas like it was purring like a kitten, but a week later sitting at a stop light the engine shifted alitte and then it ran a little rough engine light came back on. Van Noy warns against low-profile hats, especially those that ask the air to turn at a really tight angle. If the engine was not run since built then look at the serial number. When the choke flap is blocking the carb - that is the choke position (start a cold engine). If the engine runs satisfactorily in the above test, it should run normally with a known good governor module con- nected. The story of hydrolocking (refering to fluid lock not necessarily involving water) the engine is a total wives tale. I have 150cc go-kart, a 2006 Twister Hammerhead to be exact. After the fix and before the ending, Taryl goes over how the auto-choke system works on a Briggs & Stratton engine as well as the carburetor. Know where your timing is set before making carb adjustments. Pull the pull cord up to three times with the choke on. Return the lever to half choke and pull 3 more times. If diesel there is a glow plug light (coil symbol) which will illuminate for a few seconds and then when it goes out the engine is ready to start. Run pressure and volume test. This was the case even. 2000ish Polaris Sportsman 500, 4-stroke. I have Cub Cadet push mower (model number 11A-18MC056 959-468). Check our Engine emits white/blue smoke while running FAQ for assistance. At any point, if the engine almost starts but stops immediately, disengage the choke and pull again. horizontal engine. Once the engine is up and running, the Auto Choke automatically returns to an optimal operating position. Chokes Explained. Now you know what temperature the engine is running at. It's possible the Carburetor is clogged: NOTE: You may want to check the engine for spark. It will run and let me mow for amount 5-10 minutes then act like it is starving for fuel unless I pull out the choke. Doing so can cause the choke to configure the mixture for a cold engine start, despite higher actual temperatures, resulting in an overly rich mixture and flooded engine. I didn't know any different so that's what I've been doing. caused by bad gas, dirt in gas, or vacuum leak or ignition problems causing engine spitback. If you have a vacuum-operated choke, then you may have a vacuum leak in the hose, or a bad vacuum motor. I have Cub Cadet push mower (model number 11A-18MC056 959-468). With a cold engine you step on the throttle to clse/set the choke and give it a squirt of gas to start it. The slug itself is actually smaller then the tightest Full choke. 32 thoughts on “ How To Fix Briggs & Stratton Surging Engine | Nikki Carburetor Cleaning ” Carlos robles December 2, 2017 Watch out for those piece of shit carburetors, the O-ring around the main jet will go bad, and cause fuel To go past and run super rich. This gives more gas to the cylinder so it can fire easier. Conventional Forster Rifled Slugs are safe to fire in any degree of choke. When the engine starts, the choke should open partially and continue to open as the engine warms up. After allowing the engine to warm up for 15-20 seconds, slowly move the lever back to the right until the engine idles down runs smooth.