Predator 212 starts then dies

Jul 11, 2024
I have a stage 1 Predator 212 that is backfiring when I try to crank it and will not start. Where should I start? Was running great last time I rode it. Any... Menu. Forums. Supporting Member New posts Search forums. ... then troubleshoot. Likes: ole4 and sparkwizard. sparkwizard. Jun 22, 2023 #7. Jun 22, 2023 #7..

See full list on gokartnerds.comProplem engine will start fine run for about 10 minutes, then looses power. Injectors get noisy and then the engine will die. If you what 3 or so minutes engine will restart but then will die again after 5 minutes again. My FCIM is a early 7 pin. Voltage key on not runnning is 48.5 volts, running 49.6 volts.I tried to start my new predator 212 engine from Harbor Freight. When I did, there are a large BANG noise which I assume came from the exhaust. Should I exchange for a brand new motor or is it a keeper. I ask this because after I ran it successfully, there was whitish smoke. Idk if that came from something else or if it was a result of the loud ...Predator 212 stops running when I press the gas. ... Hi! I have a P212 running on a Go-Kart and whenever I push the gas or start closing the carb, the engine dies, we have cleaned the carburetor jet and the idler jet, I'm stuck, can you guys please help me? Save Share. Like.Got a Fuel Pump Control Module from Toyota today. Installed it and now it will crank, start fine, sputter some and then die. I tried disconnecting the battery for around 30 minutes and trying again, same issue. I even tried disconnecting the MAF sensor and same thing, cranks, starts fine, sputters and dies within ab 5 seconds of it starting.Spray a little Carburetor cleaner or Starter Fluid through the Air filter. Then, try to Pull Start. If your engine is starting, then you can say for sure that the issue is within your carburetor. If your engine is still not starting, then move on to the next few steps and go to number four. Read About: Performance Mods For Predator 212.Step 5 – Check the compression. This is the one that will cause you the most problems and money. It is possible that your engine is dying after start-up because you have bad engine compression. If there are one or a few cylinders that are not making good compression, it can cause the engine to die. This can be the case when you have a bad ...Carburetor For Predator 63089 4000w 212cc 6.5HP Generator. 2 Year Replacement Warranty! Replace your carburetor if your machine starts up on choke then dies, if it starts with starting fluid then dies or if it needs choke on to run. It’s also a good idea to replace your fuel and clean out fuel lines.Carburetor For R210III Predator 212cc Engine. Replace your carburetor if your machine starts up on choke then dies, if it starts with starting fluid then dies or if it needs choke on to run. It’s also a good idea to replace your fuel and clean out fuel lines. Most Problems With Equipment Not Running Or Having a Hard Time Running Is Due To ...These engines run lean from the factory for emissions reasons. Anything that improves airflow (removing air cover, opening the exhaust), leans them out even more. Cold air is dense, which also leans them out. The proper fix is rejetting the carb. A .032 jet would probably be a good place to start (factory jet is .028).Jul 17, 2016 · If flow is good from the hose, but not from the drain in the carb, then it may be a needle valve issue. Check from the hose with gas cap on and then off. Then repeat from carb bowl drain. Not open for further replies. I've had good luck for about a year with this Predator 212 on an old Carter go kart. I made a plate to put a big air cleaner on ...This may be due to a wrong choke setting, plugged air or fuel filter, clogged fuel line, bad fuel tank vent, plugged spark arrestor, dirty carburetor, faulty ignition coil, or plugged cooling system. This is why a Poulan Pro chainsaw starts then dies: Keep reading for additional things that can cause a Poulan Pro chainsaw to quit.Make minor adjustments and recheck the RPM with a tachometer after each adjustment. Adjust the high-speed screw until the required RPM range is obtained. The ideal RPM range for a Predator 212 engine is typically between 4800-5200 RPM. Once you have reached the needed RPM range, let the engine run for a few minutes.This may be due to a wrong choke setting, plugged air or fuel filter, clogged fuel line, bad fuel tank vent, plugged spark arrestor, dirty carburetor, faulty ignition coil, or plugged cooling system. This is why a Poulan Pro chainsaw starts then dies: Keep reading for additional things that can cause a Poulan Pro chainsaw to quit.May 24, 2020 · It last ran a couple weeks ago. So, it usually starts first pull, but yesterday it fired for a couple seconds and wouldn’t start after that. Seems to be getting enough fuel and spark. Oil level is good. Unplugged the low oil sensor. I have cleaned the magneto, set the coil gap, cleaned the carb, new and clean fuel.Jan 26, 2019 · Jan 26, 2019. #1. Having some starting problems... Engine is modified. Have spark have fuel... Carb is a stock appearing Bored ruixing carb came with a 0.22 pilot & 0.36 main jet . Problem is engine only pops over with choke closed & a shot of starter fluid then stalls out 2 seconds later.. Changed spark plug, checked valve lash.The first issue I encountered was with the engine completely stock. When I would start getting on the throttle it would perform normally up until about 3/4 throttle then it would start sputtering or die but sometimes it would successfully go full throttle. This wasnt the biggest deal but it was strange. Next I did a carb cleaning to make sure ...The Insider Trading Activity of Di Blasio Riccardo on Markets Insider. Indices Commodities Currencies StocksTable of Contents. Common Reasons Why a Car Starts Then Dies. 1) Bad Idle Air Control Valve. 2) Insufficient Fuel. 3) Vacuum Leak. 4) Dirty Fuel Filter. 5) Bad Crankshaft/Camshaft Position Sensor. 6) Bad Fuel Injectors. 7) Faulty Spark Plug.2682 posts · Joined 2008. #26 · Oct 30, 2008. The quickest and easiest simple solution is to splice into the wire and using some new wire add in a switch. With the switch in the on possition; start the engine and while it is running, flip the switch to the off position and leave it off.This confuses me because it has sat for longer and run just fine. I adjusted the idle screw, took the bowl, jet, and air filter off and hit it with some carb cleaner, and put a little more fresh gas in it all to no avail. It will idle just fine on choke - it will even rev - but as soon as I take it off choke it dies.We have a 2002 Taurus with a 3.0 OHV engine. We try to start it, but immediately after startup (maybe 2-3 seconds) the car dies. We have tried cold starts, where we hold the gas pedal down when turning the car on. Still doesn't work. The spark plugs on the front of the engine will get gas on them after 3-4 attempts at starting.Here’s a video from OMBwarehouse showing the process: Disconnecting Low Oil Sensor on a Predator 212, Honda 6.5 or Clone. Watch on. 2. Engine Shuts Off when Given Gas. This issue is almost always due to the carburetor being clogged up. When you push the throttle, the fuel needs to climb up from the bowl up towards the venturi of the ...Causes: Sentra Dies After Starting. Here are some of the most common reasons that your Sentra starts then stops running: 1. Lack of Fuel Pressure. Modern fuel injected engines need a lot of fuel pressure to keep running. When they don't have the proper pressure, they can't run properly.Jan 26, 2019. #1. Having some starting problems... Engine is modified. Have spark have fuel... Carb is a stock appearing Bored ruixing carb came with a 0.22 pilot & 0.36 main jet . Problem is engine only pops over with choke closed & a shot of starter fluid then stalls out 2 seconds later.. Changed spark plug, checked valve lash.12 Reasons Your Gravely Lawn Mower Starts Then Dies Bad or Old Fuel. The type of gas along with the age of that gas can negatively impact your Gravely mower. Most gas contains ethanol. This is an alternative fuel that makes gas a little environmentally friendly. It's okay to use in most vehicles, but it isn't good for the small engine in a ...A lien is an asset to the person or business that holds it, and it usually represents a right to take or hold a property that can be sold for payment. When the lien holder dies, th...Causes: Sentra Dies After Starting. Here are some of the most common reasons that your Sentra starts then stops running: 1. Lack of Fuel Pressure. Modern fuel injected engines need a lot of fuel pressure to keep running. When they don't have the proper pressure, they can't run properly.Contents hide. 1 Predator 212cc Engine Troubleshooting. 1.1 Main Problem: First problem we are about to discuss is “Engine is refusing to start”. 1.1.1 Fuel Related Problems and Their Solution: 1.1.2 Ignition (Spark) Related Problems and Their Solution: 1.1.3 Compression Related Problems and Their Solution:1850. + or- 150 according to the manual . Pull the fuel drain screw , keep a drain pan under it let it run for 3-5 minutes . If it slows or doesn't flow . Check and clean the filter under the fuel shut off . Then remove the bowel and float , make sure the needle seat and passage to the fuel shut off is clean . Lastly the fuel line and tank .Aug 22, 2021 · Here on this video i show you what worked for me when my mini bike with start but wouldn't idlePredator 212 Carb - https://amzn.to/3iN5UH1.Why is Causes it to stall. How to Fix. Stale Fuel. Gas is less combustible and the engine will have too low of a fuel-to-air ratio for combustion when the choke is off. Turn off fuel valve, drain carburetor bowl, disconnect fuel line from carburetor and drain gas from tank. Clogged or Restricted Main Jet.Reaper DNA: The Predator - The Predator was built as a surveillance UAV, but missiles were later added to its design. Learn about the Predator and how armed Predators are distingui...Apr 21, 2021. #1. I have a minibike with a predator 212 that I bought around 3 years ago now. I've never had any issues until a few days ago when I turned the choke off it was a lot higher of an idle and started to roll. I then turned the idle screw down but even a 1/8 turn was enough that it could no longer idle.I just want to get my mower up and running again. A Honda lawn mower may start and then die when bad fuel clogs the fuel system; a plugged air filter or incorrect choke position restricts airflow; a spark plug or coil is bad, or the mower overheats from an incorrect engine oil level or a plugged mower deck. I put together this guide to help you ...Could start the car and it would run up to 1500 rpm, but then as it would settle to the idle rpm about 2 seconds later it would drop in rpm then die. If you tried to start immediately afterwards it would only crank and not try to start. However, if you let it sit for about 10-20 seconds with the ignition on letting it build fuel pressure again ...Engine starts, runs, and then shuts off after seconds. First of all just want to say Hi! I am a newbie here but have looked over several different forums before I decided to become a member of PRC. Everyone here seems to be very informative and wants to help out. We are all put in different situations and come across new type of …Member. Hello everyone I have been working on a project for some time that is a predator 212 swapped yamaha yl2. The bike is a joy to ride but it has had lots of reliability issues over the 6 months ive been riding it. The first issue I encountered was with the engine completely stock. When I would start getting on the throttle it would perform ...It starts right up, and idles pretty smooth, but whenever i hit the throttle in the slightest it dies. Does matter if choke is up or not. Im pretty good with small engines but this one is kickin my butt. Oh and it is a 2007 Predator 500. When i take the fuel line off to the carb and crank it, fuel comes out, just im not sure if its enough.Contents. 1 Most Solutions for Stalling Engines in Pressure Washers Often Target Fuel System. 1.1 • Identifying the Root Cause of Engine Stalling. 1.1.1 In my 20 years of experience, I've found that a pressure washer might start and then die due to several reasons such as a clogged carburetor, a dirty air filter, or problems with the spark plug; 1.2 Let's troubleshoot the spark arrestor01 - Small Engine Carburetor. The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the engine for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.Jun 16, 2019. #1. *I have Spark *The governor and oil sensor are removed. *Compression tests (done cold) yield 60psi. *I adjusted the valve leash to spec 8/1000 exhaust 6/1000 …sparkwizard said: Try removing the clutch, turning it so the sprocket is close to the engine and reinstalling it. That might help. I did do this then it is to far inside I can add a spacer or two and see if that works but currently the engine is now not running when I give it gas it just dies and it is bogging when idling.If someone close to you has died, it can be hard to find a way to honor his memory and keep his memory alive. Donating money in memory of someone who has died is a beautiful way to...Messages. 14,855. Jul 30, 2019 / Engine starts after priming, then dies in 2-3 seconds. #10. Because we now know that it is a 2-cycle engine, not 4-cycle, it may not be the carb at all. 2 and 4 cycle engine needed to be troubleshooted in a totally different way. Things like PTO and magneto seals could be leaking.Mar 7, 2017 · Hi, Predator 8750 Generator. Will start and run briefly, then stalls. On first start it runs longer, then just starts and stalls on further attempts. New carb and gaskets, new fuel petcock and fuel li … read moreAccording to Carol Stream the electric start only adds about 3lbs. to the total engine weight, not including the battery of course.Some of the clones and copies such as the Lifan 212 electric start. list the total weight about 10lbs heavier than the GX series engines, don't know how they do that.With a displacement of 212cc and an output of 6.5hp, the Predator 212cc can well power any type of mini-bike or go-kart. The engine also produces a massive 8.1 ft-lb of torque at 2,500 rpm. It has a traditional recoil starter and is available in both Hemi and non-Hemi configurations. You can choose to have an easy-to-use electric start through ...The problem: Ignition on, all lights and gauges come up except tac, fuel, and battery. Jeep starts, runs perfect, then dies 2 seconds later consistently. I did notice fuel pump still running for a short time after it dies. Even with foot on throttle it still dies. No chugging. Engine cuts off clean.Spray a little Carburetor cleaner or Starter Fluid through the Air filter. Then, try to Pull Start. If your engine is starting, then you can say for sure that the issue is within your carburetor. If your engine is still not starting, then move on to the next few steps and go to number four. Read About: Performance Mods For Predator 212.Why is Causes it to stall. How to Fix. Stale Fuel. Gas is less combustible and the engine will have too low of a fuel-to-air ratio for combustion when the choke is off. Turn off fuel valve, drain carburetor bowl, disconnect fuel line from carburetor and drain gas from tank. Clogged or Restricted Main Jet.The stock carburetors on a predator 212 or Honda GX160 or any other smaller engines are designed for the stock engine which has a governor to limit the rpm to around 3600. If you remove the governor or make other adjustments to increase rpm then you will need to get a Mikuni or a Mikuni clone carburetor to get more power out of the engine.1. Bad, Old, or Wrong Fuel. Running good fresh fuel through your riding mower is best. Gasoline can begin to break down and become less effective as soon as 30 days after purchase. Ethanol in your gasoline along with the moisture it attracts can gum up the fuel system causing clogs. When this happens, your lawn mower starts then dies.There is a screw that is on the throttle/governor linkage. Back it out to get more throttle and turn more rpm. If your motor is stalling on the grid - you might have a carburetor problem and that is causing it to not turn more rpm. You should be able to turn 5000+ rpm even with governor if its setup right.1150 posts · Joined 2003. #7 · Jul 25, 2004. Dropped it off this morning (yeah, he's open on Sundays) and picked it up at about 1 or so. Take it around the block and it won't idle. So, I call him up and take it back. He takes the carb off, jets out and blows air through everything and replaces it, and it's good as new.6. Location. Springfield, Missouri. Sep 23, 2020. #17. So, this kart had no issues while riding on pavement but now when pull starting, it wants to kick back and tear your arm off. Predator Hemi 212 w/stage 1 upgrade, Mikuni 22, fuel pump operating off the clear valve cover which has a separate fitting for the breather.K. Kimmel331 Discussion starter. 1 post · Joined 2019. #1 · Aug 30, 2019. I have a predator 212cc 6.5hp engine on my go kart and I can't get it to run correctly. Whenever I start it up it revs real high and wants to take off. At first I thought the clutch was getting stuck and engaging but I put a new clutch on and that wasn't the problem.I had startron small engine fuel treatment handy. Pored about half an once into empty tank then about an ounce of gas. It did the start stop thing about 4 or 5 times but noticed the run time getting longer. Once st struggled running for a minute or 2 it got smoother. Filled the tank and let run for 5 min. Smooth going. Then i cut grass. Thanks Jim!The most common Predator generator problems are: Generator won’t start; Generator starts and then dies; Generator is leaking gas; Generator bogs down under load; Take caution when performing repairs. Always remove the spark plug wire and wait for the engine to cool. Follow all safety precautions found in the Predator operator’s manual.Unscrew and remove the back cover. Remove the screen from inside the silencer. Use a carbon cleaner and then use a wire brush to clear all blockages. Put the screen back inside the silencer and close the trimmer. 5. Clogged Carburetor. Fuel from the fuel tank passes through the carburetor before going to the engine.2002 gt starts then dies immediately. i just did an oil change and fuel filter change on my moms 02 gt that had not been changed in 50k+ km. it needed to be jumped 5 times while i was doing all that work so im thinking the battery is ****, it is 5 years old. i drove it around for 2 days then tried taking it to school and it died when i put it ...Probably stored with ethanol fuel. Over time it creates a gel in the carburetor bowl and tank. Clean the carb. Drain and Clean the tank. Put new fuel lines on. And a new filter. Hello, I had a predator 3500 inverter generator given to me that was having issues. The generator will start up when the knob is in the start….August 5, 2020 by Jason. It can be very disconcerting if your Toyota Corolla is starting and then dies. It is most likely caused by some type of issue with the electrical or fuel system. But, there can be other causes as well. Your Corolla's engine needs 3 things constantly and in the proper proportion to keep running. Air.Jun 29, 2023. #1. Hey guys, looking for some help with my go kart predator 212 engine which dies immediately. Picked up a project kart on Fb marketplace. Had gummed up carb and wouldn't run, so I gave the carb a really good clean. It would start on starting fluid, but dies as soon as fluid runs out. Fuel tank is clean, gas tank is clean.05 - Snowblower Engine Oil. The engine oil might have been overfilled. If the engine oil is overfilled, the oil may leak out through the breather and seep into the carburetor. If engine oil has seeped into the carburetor, remove the carburetor and clean it thoroughly. Then ensure that the engine has the proper level of oil.Yea, I know the feeling. This is a common ATV complaint. An ATV that dies when the choke is off is symptomatic of a dirty pilot jet in the carburetor. Removing and cleaning the carburetor will fix the problem. Other possible issues include: Incorrect air/fuel mixture ratio. Faulty carburetor. Vacuum leak.I have a predator 212 hemi, VM 22 carb (125 main), exhaust pipe, 12T in the front and 70T in the rear, stock internals. Then, I did a governor removal on it, put 10T in the front, 48T on the rear. Before I made these changes my bike always pulled forward a little when I started it. But now, instead of starting in 1 to 2 pulls.The most common Predator generator problems are: Generator won’t start; Generator starts and then dies; Generator is leaking gas; Generator bogs down under load; Take caution when performing repairs. Always remove the spark plug wire and wait for the engine to cool. Follow all safety precautions found in the Predator operator’s manual.2002 Sportsman 500 HO, starts then dies. So my Sportsman was running great, then I parked it where I stopped to get off to talk to someone. It started right up but then died. Now when I try to start it, it did back fire 2 different times, and also will just barely fire. If it sits for a little while it will start and run for about 15 seconds ...Sep 25, 2015. #1. I recently purchased a used racing go kart it is an older trick with a modified predator 212 the previous owner said he hadn't rode it in over a year or more that it needed new plug and carb cleaned. We have cleaned the carb, jet & emulsion tube multiple times & replaced the spark plug. It will start and run while the choke is ...To start the engine, I open the plastic box and remove the air filter, then set it to choke and give the handle pull a few spins. Sometimes Ill here compression and some smoke but it wont start, so i put in in the run position and then pull a few times, and it will usually start. Then i put the filter back on and i notice the humm/rpm drops ...Go back start it with enrichner on, if it dies spray a small shot of starting fluid and see if it restarts, if it does not start after 5 or 6 pulls immediately pull plug and see if it is wet. If it restarts and dies again after the starting fluid (still with the enrichner on) then it sounds like something is wrong with the carb.To start the engine, I open the plastic box and remove the air filter, then set it to choke and give the handle pull a few spins. Sometimes Ill here compression and some smoke but it wont start, so i put in in the run position and then pull a few times, and it will usually start. Then i put the filter back on and i notice the humm/rpm drops ...Carburetor For Predator 63089 4000w 212cc 6.5HP Generator. 2 Year Replacement Warranty! Replace your carburetor if your machine starts up on choke then dies, if it starts with starting fluid then dies or if it needs choke on to run. It’s also a good idea to replace your fuel and clean out fuel lines.Feb 2, 2023 · Disassemble spray through every passage with carb clean , wd 40 , brake clean , pb blaster etc . i already did that, i use carb cleaner. took all jets out, took the bowl off and sprayed throwouly with carb spray and then made sure there was no build up. reassembled and still doesn’t start. C.Jun 29, 2023. #1. Hey guys, looking for some help with my go kart predator 212 engine which dies immediately. Picked up a project kart on Fb marketplace. Had gummed up carb and wouldn't run, so I gave the carb a really good clean. It would start on starting fluid, but dies as soon as fluid runs out. Fuel tank is clean, gas tank is clean.This video addresses the #1 reason a power washer (or other small engine) won't start following storage...old fuel has resulted in a clogged carburetor main ...1. Lack of Fuel. The most common reason why your car starts then dies is because of a lack of fuel in the engine. This often happens because there is a small amount of fuel in the fuel rail – which is enough to help the engine start – but there is no fuel pressure to keep the engine alive. Lack of fuel is pretty easy to locate, though.However, you were not prepared for it to stop running after you got it started. A Honda generator may start and then die due to a plugged air filter, wrong choke setting, clogged fuel line, plugged fuel …Predator 212cc Performance Upgrades. Perhaps the most common replacement go kart engine, the Predator 212 is an unbelievably good value. Couple the low initial cost with the super competitive and very reasonably priced aftermarket parts and you've got a recipe for the #1 engine for go karts. The Predator 212 is the engine I swapped onto my go ...

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That I have a predator 212 hemi, VM 22 carb (125 main), exhaust pipe, 12T in the front and 70T in the rear, stock internals. Then, I did a governor removal on it, put 10T in the front, 48T on the rear. Before I made these changes my bike always pulled forward a little when I started it. But now, instead of starting in 1 to 2 pulls.

How The results showed 2.25 hp gain and 1.83 lb/ft torque gain. You can expect a Predator 212 to produce 2-3 hp more than a stock Predator 212. i.e, you can expect a stage 1 Predator 212 to make 9-10 hp power. If your governor is removed, you can expect a little extra gain in power.After cleaning out the carbs, the predator 212 no longer starts Hiya, A couple days ago, I got a killer deal on a minibike. It came with a predator 212... Menu. All the way Home. Forums Home. ... Predator 212 Dies Out. Thread starter sethro34; Start date Jul 27, 2016; Status Not open for further replies. S. sethro34 New member.

When New member. Joined. Oct 28, 2012. Messages. 2. Skid steer started ran for about 7 minutes died. It sat for about 3 hours started up and ran for about 3 minutes died. Battery died, switched out sat for about 3 hours started ran for about 2 minutes died, starts runs dies, each time it seems to run for less time. Everything sounds good when running.This is because a gas-powered engine relies on many different things working together simultaneously to achieve effective combustion. Any single problem or a combination of many issues can cause a lawn mower to start then die. Here are …Table of Contents. Common Reasons Why a Car Starts Then Dies. 1) Bad Idle Air Control Valve. 2) Insufficient Fuel. 3) Vacuum Leak. 4) Dirty Fuel Filter. 5) Bad Crankshaft/Camshaft Position Sensor. 6) Bad Fuel Injectors. 7) Faulty Spark Plug.…

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miilkywayz real face Right now, I can pull the starter, then I have to give it throttle to keep it alive. If I let go of the throttle the engine will kill itself. If I release the choke, the bike starts moving BUT when you let go of the throttle, the engine should idle, but it doesn't. The engine just dies. Has...This comprehensive overview provides step-by-step instructions for connecting the wiring of your Predator 212 engine. It includes all the necessary diagrams, charts, and terminology to help you make the most of this powerful and versatile engine. The Predator 212 Electric Start Wiring Diagram Pdf is a great tool to have on hand when working on ... forgiving troyenvy nails warrenton va Im converting my 212 powered golf cart to electric start. Since installing the FnR gearbox figured an electric start was in order First as we know there are 2) 212 versions. I gathered from forums a while back the the hemi version will not take the Honda GX200 conversion due to flywheel /crank differences. flamin hot pretzels discontinuedhow to increase mastery in blox fruitsshib uya challenge bitlife When It Won't Start. If your Predator 212cc engine won't start, the problem might be the spark plug, carburetor, fuel delivery system, or compression. Inspect the Spark Plug: A faulty spark plug may prevent the engine from starting. Replace the spark plug if it's dirty or damaged. boogie man build a bear A Hustler lawn mower may start then die due to a plugged fuel filter, clogged fuel line, bad fuel pump, dirty carburetor, plugged air filter, bad spark plug, incorrect engine oil level, bad gas cap, plugged mower deck, or bad gasoline. Keep reading for additional items that can cause a Hustler walk-behind, zero-turn, or stand-on to quit running.A possibility to consider is fuel overflow, flooding the engine, mixing with the oil. Alternately, still a carb issue. Still, let's try to check and review the basic even if just for test purposes: temporarily unplug the high tension/spark plug wire + cap; attempt to start with wide-open throttle; remove the spark plug; chynnamayberrymiata net forumsar15 lower stl 10. Bad John Deere Mower Gas Cap. Your John Deere fuel cap has a vent that allows air to pass through the cap. When this vent is plugged, your mower will die after it starts. A clogged vent will cause your fuel tank to form a vacuum restricting fuel. Solution: Loosen or remove your fuel cap and start your mower.Runs great then dies. I have a 2002 Magnum 500 RMK. I just had the car rebuilt by a Polaris dealer. It runs great. Idles perfect accelerates excellent, perfect. That is, until it dies. It acts as if it runs out of gas, OR the spark fails. I added a new fuel filter, fuel pump, and fresh gas.