Fix a Lawn Mower that Will Not Start When Hot - How to Diagnose & Repair

How to Diagnose & Repair a Lawn Mower that Will Not Start When it's Hot. I walk you through the step by step process I took to figure this problem out. The customer said this mower would start when cold but when they shut it off to empty the lawn clipping bad and went back to start it... it would not start until it cooled back down. I assumed this would be the beginning stages of a coil going bad... But I was surprised to find out the true cause of this problem. Check the video out to see what the problem ended up being. I think this will help you in diagnosing & repairing your lawn mower, small engine problem and save you time and money by not just throwing parts at a problem and not getting it fixed.
#lawnmowerrepair #lawnmowerwontstart
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Disclaimer:
Although I have been following these procedures for many years; I assume no liability for any damage that may occur to any person or property as a result of the information provided in this video. I take necessary precautions (that I am aware of) when working on these projects but that in no way implies or creates any expressed or implied warranty or guarantee of any kind of particular result. Any injury, damage or loss of any kind to anyone or their property or anything related to information in this video is the sole responsibility of the user and not Helping U Online (this video).

[@misterbslots]

Awesome information. That is exactly what my mower is doing. Thank you.

[@helpinguonline]

Glad I could help

[@josealmeida7147]

Good explanation

[@baddad5781]

I was wondering if maybe it was a choke problem or if the gas cap had a venting issue instead of the coil. You figured it out so good job. The video is very well done and thanks for sharing with all of us.

[@helpinguonline]

thanks for your feedback

[@bigrobchavis5704]

WOW!!!! THANK YOU!!!! i'm trying that tomorrow!!!!

[@1001Hobbies]

This is EXACTLY what mine (10 years old) is doing. It's slowly been getting harder to start (and had always started on the first pull) over the past month. I am going to clean the carb and jet and see if that takes care of it. It's been a fantastic mower until now.

[@curtite]

Thanks chief!!! Hope to do a Happy dance too after cleaning my fuel system thoroughly. From the tank, inlet hose and all of the carburetor😁

[@patrickmauran7316]

I have the exact same problem. Marvelous.

[@bobendres1542]

Exact lawnmower, exact problem since new. Took to a toro dealership said they fixed it. 2nd time I used it, it acted up again. I sold it yesterday they found your video and took off the carb and cleaned it. Solved the problem.

[@classic287]

Yup, sitting over winter with gas in the carb will mess it up every time unless you put gas treatment in it...

[@Ed-wc2th]

I have the exact same problem. If engine is hot and I restart in about a minute or less - no problem. Somewhere around 3 to 4 minutes off, it won't start. I suspected hot engine auto-choke issue but didn't want to waste time until I saw this video. THANKS! - to author and others. Will try carb and fuel line clean out, replacing gas cap.

[@wayneguy1965]

great job, my 9 year old Kubota zero turn is having the exact same problem.

[@melanie-annethibeau2087]

TYSVM!! Watching & listening it felt like you were recreating moments to myself in the yard working on various things. "That's odd...." "This is a unique problem...." 🤣🤣🤣😁

[@JeffDublinIreland1968]

Brilliant video. I stripped the whole fuel system down and it still struggled to get going. After watching this I cleaned out the carburetor😁 and used Engine Starter Fluid. Works perfect now. THANK YOU

[@helpinguonline]

Way to go

[@Ben-tr]

Wow,ty I'm having the same problem thought it was the coil

[@leynagh]

I've got a Stihl FS 280 Brushcutter that does exactly the same . Starts and runs a treat but once it's heated up , if you switch it off before you're done , then you can forget starting it again . Now I know a good place to start . Thanks .

[@helpinguonline]

Glad it was helpful to get you started on your repair

[@earlbabcock8636]

Great video! I been having the same issue. I thought it was just me and I was just stupid.

[@ajfogertyfan8245]

Great video, I just went through dealing with a Briggs 725EXI lawn mower engine that always starts and runs great for as long as you want, but is dead as a dodo immediately after you shut it down even for a couple of minutes while emptying the bag. And then after about twenty minutes of cooling down, starts right up again. Replaced the coil, cleaned the carb, which helped a little for a while, and then replaced the carburetor the other day, and the problem still persisted! I had an AH-HA moment yesterday when I started to suspect that crankcase breather oil fumes that dump into the air cleaner were involved. Sure enough, after temporarily disconnecting the breather hose from the air cleaner housing, the hot start problem was eliminated! Did repeated hot starts on the first or second pull. This 725EXI has recently starting to burn a bit of oil, and you can see oil sludge building up inside the air cleaner housing at the carb inlet. Apparently the hot oil fumes are messing up the fuel mixture enough to prevent a hot start, but do not really impact a running engine, the engine always runs very strong and smooth as long as you let it after a cold start, but once hot, nothing doing! The whole situation makes sense now, once the engine has cooled down, the crankcase fumes are not present on a cold start to mess up the air fuel mixture…. I’m posting this to bring this to everyone’s attention, I have not seen anyone else make the connection of the hot no start problem to crankcase oil fumes. Looks like the engine needs a piston ring job, wonder how easy that will be, anyone out there have any experience with that? Any associated KZbin videos? Chris B. Stonington CT

[@helpinguonline]

Thanks for sharing

[@user-xp7yy3py5o]

Thanks for sharing as I have exactly the same pattern on an old engine that does burn some oil. I replaced the spark plug, carburetor, air filter and no change. Will try your suggestion. Thanks

[@ibroberson9127]

Good job

[@dalehammond1749]

Yup, went through the same thing myself. I solved mine with Sea Foam in the gas. I know, now days everybody poo poos Sea Foam but it works for me. Great video.

[@lesliehorwinkle]

When it works, it works.

[@claudedickson1680]

good stuff

[@JuanCarlos-xp7oy]

Gracias por tu video, muy bien diagnosticado. Ahora es mi turno de darle mantenimiento a mi maquina.

[@helpinguonline]

You can do it

[@danwood1047]

I have EXACTLY the same issue with my mower. I'm going to try cleaning the carburetor. Thanks!

[@gtarules1]

How did it go?

[@josealmeida7147]

Good explanation

[@garethjones2171]

same problem with mine, thanks for your help

[@helpinguonline]

Glad I could help

[@playgroundchooser]

I have a rock solid Husquevarna with a B&S engine on it. It starts first pull *every* single time for all 6 years that I've owned it. *Except....* it sometimes won't restart until it cools down JUST LIKE THIS ONE!! I can't wait to go home and see if I can fix it for good!! I'm sooo tired of having to mow my lawn in chunks day after day. Thank you good sir!

[@helpinguonline]

when that happens remove the air filter and spray some starting fluid in the carb and see if it will start (like I did in this video). If it will start then you know you have a fuel problem when it gets hot. Let us know what you find

[@playgroundchooser]

@@helpinguonline I finally found this video again to give an update: PROBLEM *SOLVED!!* I ended up taking the carb completely off and giving it a deep clean. Cleaned out the gas tank, and checked the spark gap. Maybe $5 worth of "parts" because I didn't have dedicated carb cleaner and sub 30 minutes of effort; and it hasn't had the issue SINCE!!! It's been back to first pull every time for a month now. I was looking at buying a new mower before you taught me the fix. Again, I thank you for your knowledge & this video!!!

[@playgroundchooser]

​@@helpinguonline Reporting in Captain. I installed a gas line cut off last summer, so the carburetor never sits with gas in it; and it starts first pull every time to this day. Again, thank you for curing it!

[@markjackson5549]

Thanks mine is doing the same thing..

[@aamirshahzad8060]

Excellent diagnosis

[@helpinguonline]

Thanks

[@gradyhernandez4699]

Some guys just throw these mowers away without attempting to TRY

[@joemcintyre2090]

I am having this issue with the same kind of mower just wanted to see what your fix was. After disassembling the top of the motor checking and rechecking the coil gap and making sure the choke flapper was operating correctly. I found that the thermostat the that keeps the choke open when it's warm is causing the carburetor to not deliver fuel to restart. Therefore I need to clean the carb like you did. So there's the root of the problem, the choke system!

[@georgethompson5459]

I had the same problem with my 2006 Troy-built I had to replace the coil works great know.

[@alvinrodriguez3490]

I have the same issue thanks !

[@hughjones992]

Thanks for the video, my Toro shares the same problem. I am guessing that the problem stems from the auto choke. Perhaps the expanding pellet should be replaced occasionally and linkage cleaned?

[@andrenabhan2186]

You did a great job

[@helpinguonline]

Thanks

[@msavina9129]

You the man!

[@nopriors]

Bravo!

[@dropndeal]

I have a Husqvarna self-propelled with a Honda engine that will start on 1 or 2 pulls even after sitting in storage. It has never given me any problems. My Troybilt Pressure Washer uses a Briggs, and it will no-start after getting hot. In fact, it exhibited this problem even when new, and after carb replacement. I guess it’s time for a coil replacement.

[@barneyfyfe8313]

I wish I kept my 20 yrs old Toro Super Recycler. My 2 year old Toro Recycler is a PIA.

[@minhthang0811]

Does Exactly What It Should Do

[@CBsGarage123]

exactly what i needed thank god for people like this

[@russellpenn1738]

I have the same mower with the same problem. Cleaning the carb make it run great again. Thanks.

[@helpinguonline]

Good to hear

[@lovasjj]

I have a ST100 bush mower with this exact issue. it doesn't restart when the auto choke system opens the choke butterfly valve in the carb. This however is the correct function of auto choke as restarting a warm engine choked may flood it.... as a closed choke creates the maximum gas draw. Choke is needed when cold but should be open when warm. if a mower experiences this issue and a jet of fluid starts it, I guess there may be a suction leak somewhere resulting in no fuel delivery when the mower is manually pull stated. To complicate everything mine has a evap filter, additional hoses, possible sources off a suction leak !

[@lesliehorwinkle]

we used to check sheer pin also. Sometimes, man sometimes. Everytime Ive found one jacked, that engine fires up sooo easy after fixing. A couple degrees will kill your arm and lungs.

[@dfields9511]

good info, I tried this and I still have issues. it seems to loose compression when hot, suspect exhaust value issue. it is also on a Toro. I even replaced the carb with a new one. I had a used Coil that was known to be good and tried that and still have same issues so I knew its not a coil

[@brolsonmusic]

the easiest fix is a shoestring tied around the handle. NEVER shut it off!!

[@joelawton123]

Mine stalls sometimes if it gets blocked up with grass, I’m having this exact same problem, identical mower. It’s been such a great engine up to now, had it 8 years and until this year it’s never needed 3 pulls to start, even after winter.

[@George-kt6gm]

I ve been fixing mower s for some years and In my experience its almost always the carb. hardly ever a coil or plug. BUT I h ave one now that still wont start hot even with a clean carb... seems to need a bit of choke even when hot. driving me crazy. All the best!

[@geoffreybalme4215]

Same problem for me, I've cleaned the carb and I still won't start when hot. Have you found a solution?

[@MrKentken]

Same problem for me, I've cleaned the carb and I still won't start when hot. Have you found a solution?

[@gtarules1]

Did you fix it George?

[@LuliBrazil]

Today I got a good burn on the carburetor, I was trying to put the wheels higher because it was stopping all the time, I will try cleaning the carburetor.

[@martinblack781]

Got the same mower. Hard to start after months dormant. Gotta yank the carb and clean out the old gas. Also, gas cap doesn't like to vent after a few years. I just back it off a few turns to stop the vacuum lock.

[@jasonmoody9673]

My was same M8 thanks video 😮😮😮

[@helpinguonline]

Glad I could help

[@dberry1052]

if its hot and it wont start with starting fluid...you dont have enough spark to start it....change the coil. I've seen these things go bad...sometimes in the middle of cutting it'll just stop...you let it cool down and it will start right back up. Like someone else said spark plugs rarely go bad...you can pull and clean them, check the gap (about .030 for Briggs) and ensure insulator is not cracked..and torgue them properly. they need to be tight enough to seal properly.

[@jayveezy4772]

Did just like the video said. And my lawnmower worked after that.

[@helpinguonline]

Good job

[@ex8280]

I just did a cleaning of my dad's trimmer. Same thing, he insisted it was the coil. We took it apart and check the gap. Nothing. So i just took apart the carb, sprayed some cleaner, and put it back together and it works like new. I'm just sad that everything is going battery these days and OEM Parts are getting harder and harder to find.

[@user-wz9nh6bb8z]

Thanks for this. My dad's mower is doing this. The same exact mower. I have to use the electric start and it won't start after shuttting it off to get to the front lawn. My dad is no longer with us so he can't help me.

[@helpinguonline]

The things he taught you will always be with you... God Bless you and lead you...!

[@jwayne777]

Nice fix. It was water in the gas. Just pour the gas out in a clear jug you can see the water inside. Then drain the gas from the carburetor bowl by removing the bowl plug.. Before you do all that above You can tilt the mower towards the carburetor to see if it starts. Thats how I find out. 13:35

[@Jorge-ku1zz]

So, if it starts up when i tilt the mower that means i have water in the gas tank? Thank you in advance.

[@ballenf]

Exact problem after getting it back from a full service. Never happened before taking it in. Maybe they fouled the carb? Will try out cleaning tomorrow.

[@canadianweasel]

I have the same issue with my Recycler. I've cleaned the carburetor, but the problem remains. Like yours, it will start with a shot of starter fluid and continue to run. If I close the choke while it's hot, it will start, though it's stubborn about it. I didn't trying blowing out the fuel line, but it seems to flow fine as it is. I may have missed something in the cleaning, but I cannot think of what. It's a PITA. I have a second Honda mower, but it's a Frankenmower and doesn't do my preferred method of mulching. I also have a Honda riding mower, but it's seen better days and the electrical is an issue, as is several of the tires. My other riding mower, a Ryobi rechargeable electric doesn't want to work either. It drives fine, but the blades won't spin. They do start occasionally, but not enough to be considered even semi-reliable. I just don't have luck with outdoor power equipment.

[@Ranjer-os5wr]

You have no idea how much I appreciate your posting this. Today - I will put this info to work on my mower. Thanks, sir.

[@helpinguonline]

Glad to help

[@bluemax229]

I was 99% certain what the problem was before I watched very much of your video? Wanted to see if there was something I had not seen, but that did not happen. It is the main jet that anchors the bowl to the bottom of the carburetor, and that's what it always is! That jet gets plugged very easily. I am going to install an inline fuel filter between the tank and the carb and see if that eliminates the non-starts.

[@thepreyhunter]

Same. Surging on first start was the telltale sign. Choke is used when cold which allows more fuel for startup, but when hot the choke isn't used and the engine is starved for fuel. If jets are clear on cold startup it won't surge like that. Ideally, he would do a full disassembly and cleaning of the carb.

[@gsfdriller]

I have a 2008 McCulloch B&S mower. Used to have a problem every year with the carb gumming up and fine debris in the fuel. Time consuming fixing it. Difficult or impossible to start. My cure was fitting a cheap Chinese fuel filter and stop cock. When I’m finished with the mower for the day I close the cock with the engine running and allow the carb to empty. I use B&S fuel preserver also. No problems for years. It starts right up after a freezing winter here in Scotland. E5 fuel.

[@helpinguonline]

Way to go

[@rene291]

i am going though the same problem with a rental i picked up yesterday

[@johnrobertson1808]

Simple: Make sure the underside is clean . There are cooling ribs on the bottom of engine. Proper amount of oil. Clean air filter. It will start as it should.

[@user-iq9qg6lq9x]

Mine has had the exact same problem. If I wait more than 5 minutes, it's a real pain to get going.....floods out.

[@GG64du02]

Weak spark can make the engine cough with fuel ratio contains more air (had the problem recently), it would only cough when I stopped cranking. (Water got on the coil) changed it, it is fixed.

[@mrs.b6719]

Your videos are so helpful, especially for this do it yourself wife who always tries to help my husband out.

[@helpinguonline]

Happy to hear that!… And happy to hear you’re supporting your husband

[@alexloh4894]

Lol 😅😅😅

[@cottle95]

Such a lovely comment. 10/10 wife

[@playandcookwithlilly7080]

I’m one of those wife’s too lol

[@gradyhernandez4699]

Yes,good wife

[@robertmehlfelderbob]

I have a similar problem with a Ryobi 2 stroke weed trimmer. I can't restart it after a long run. It has to cool down before it can start again!!!

[@SuperKAgility]

I had the same problem with same model Toro, found the jet was a little gummed up. What are you using as a work stand/ table?

[@helpinguonline]

It is a foldable carpenters sawhorse table /Router table that my neighbor was throwing away. It does come in handy

[@johnmillman2048]

With the ethanol fuel in the mix, when the mower sits through the winter months come spring it's gummy in the carburetor.

[@Na-nc6qt]

I had a retired small engine repair man tell me to use fuel with no ethanol and it would resolve the issue. Said that was the biggest problem with weed eaters too. Cleaning carburetor only works for a little while then the issue returns

[@robertfink1126]

Same problem on my sears riding mower but doest start being hot with starting fluid

[@kellycreech7794]

Great video. What are you spraying into the carburator? What product? Many thanks

[@helpinguonline]

Starting fluid When trying to get it started and I use carburetor cleaner when disassembling and cleaning a carburetor

[@carnelclarke6856]

Very helpful video. I had the same problem with my Toro Recycler; whenever I stop to empty the bag, I had to wait until the mover cooled before it would start. I replaced the spark plug, changed the fuel, changed the air filter, but problem remained. I pulled the carburetor and cleaned it and ..... problem fixed. Thanks for posting.

[@helpinguonline]

Way to go!

[@user-ex2bu8tb9z]

Same problem, fresh gasoline, use starter fluid, will not start, immediately put new spark plug in and it starts. I have not checked the coil performance. Would like to have seen that procedure.

[@JFD8888]

I work at a big box retailer..had one returned due to the electric start not working.. replaced the 40 amp fuse (there was an extrain the little black box) and it fired right up..different issue but might be the reason you did not use the electric starter

[@ComoLoHaceJuanCarlos]

Hello. Awesome video. I have a Toro 6.75 190cc. I have that issue so I replaced the carburetor and I I took the gas tank out and washed it. Put new gas, new air filter , new spark plug and it starts great but once hot and I turn it off it wont start again. So can it be the coil? and how do I test that?

[@helpinguonline]

When it is hot and will not start check to see if you have spark as I did in the video. If there is no spark then you can take it apart and change the coil But before you take that apart I would diagnose it and check for spark. When coils begin to go bad they will work intermittently… Often when the engine is cool they work and when they get hot and expand they quit

[@WatchDesigning]

Great. I see, yes you did the spark test with the engine hot. I'll go ahead and do that and I think 90% that is the issue. Thank you so much my friend. Be well.

[@helpinguonline]

If it is your coil this video may help you fix that. kzbin.info/www/bejne/kGGzfXWCa7yhp7c

[@joemcintyre2090]

It's a carburetor issue you can read my main comment explaining why.

[@ajfogertyfan8245]

It may be hot oil fumes from the crankcase oil breather tube messing up the fuel/air mix,‘ just confirmed this on my Briggs and Stratton 725EXI. Try temporarily disconnecting the oil breather hose from the air filter housing and see it that helps. Also be sure your air filter itself is not clogged.

[@abbieabbie6818]

That my problem with mine also. But I'm not going take the carb apart. I have someone do it that knows what doing. Best to use Non Ethel gasoline

[@beardedscrapper538]

Ive always heard coil. Im having the same issue with the same motor. Ran the carb through the ultra sonic cleaner blew out with air. Now runs great but when i shut it off it wouldnt start. Guess ill clean the carb again.

[@waltertur9731]

It's the choke

[@markelkins7622]

Check clearance on intake vslve

[@frankie7508]

Did you check the gas cap? It is not the spark. Did you fully inspect the carburetor and has it beeb cleaned thoroughly? These are the issues. The gas cap has been known to fail and cause vapor lock On this particular model. I replaced the gas cap with a conventional one which has a vented hole through it. And the vapor lock problems were solved. If you don't replace the original gas cap, then you're going to have this problem again. That's been my experience after owning/operating the same mower and engine for twelve years. Mine starts first time every time. And once a year, one should take all the covers off of the top and clean the entire top of the mower from all debris and grass clippings so that the auto choke works flawlessly. I drain my fuel tank, carburetor and take off the gas cap, replacing it with a tightly fitting rag throughout every winter. Every bit of my fuel that I use contains stabil. The problem I am having with the mower is not the engine. Because I have solved all those problems. It's the body of the mower that is going; stress and fatique cracks around the wheels. The briggs and stratton engines are finnicky, but once you understand the need for a good, fresh fuel And a clean carburetor, they run quite well. I change the oil once a year, along with the spark plug and Air filter every year no matter what. No engine problems whatsoever. You wasted a lot of time figuring out the problem which is rarely electrical.

[@jbnovak99]

Can you post which cap you went with? I’d like to replace mine

[@gerlandkent6377]

It's the coil that rides on the fly wheel. And some times need to take sand paper and clean the rust off of the fly wheel

[@philliphall5198]

Coil needs sanding and block mount area

[@mikedougherty7694]

I have problem with choke All the time last two mowers only toro

[@wldwst22]

I wish I had watched this before I swapped the Coil on my mower. Oh well, live and learn.

[@nevcorkin9058]

my ryobi mower has been doing this since it was brand new, always seemed like a fuel problem, have to wait ten to fifteen mins before it will start again

[@broadcastmedianzTV]

So does mine here in NZ. I will now give the carb the once over.

[@davidsumpter4933]

I have the same problem even after replacing the plug. I pull the plug, fill the plug with gas, reinstall, and it starts right up. I am sure there is a problem with the carb, but it's a simple workaround.

[@tomthompson7400]

ive a 6.5 hp briggs and stratton intek does exactly the same thing ,,, i just go and have a cup of tea , thenafter that it starts ,,, when its running it will run all day , but you dare not turn it off to fill the fuel tank , or its twenty mins wait.

[@eman5830]

🙌🔥

[@Dstromb232]

Mine and my brother does the same thing?

[@user-xp7yy3py5o]

I have exactly the same issue and the same problem with starting. Using starting fluid works unless it has warmed up then after 5 minutes nothing until it cools down completely. Replaced plug, carburetor, drained the tank and replaced the air filter. Works well under load and if it chokes off in thick grass it will restart if I do it immediately waiting more than 3-5 minutes nothing until it’s cooled. What is it I haven’t tried a coil maybe…

[@helpinguonline]

Sounds like your coil is going bad. this may help you diagnose... kzbin.info/www/bejne/kGGzfXWCa7yhp7c

[@helpinguonline]

Here is another one that may help diagnosing your coil and wiring kzbin.info/www/bejne/p5y2ameOmbCShdU

[@dmt66]

Plugs almost never go bad. Coils yes, but you ruled that out quickly. People need to run stable in their mowers. This ethanol fuel is crap and will gunk up the carb jet pretty quickly. Did this mower have a primer bulb?

[@helpinguonline]

No primer bulb

[@trainwon5699]

💯👌

[@martinmercerjr8615]

I have the same problem with my lawnmower, so I change the coil 2 years ago and it’s still doing the same thing, I changed the spark plug too, last year.

[@philliphall5198]

Check the fuel cap for stopped up vent , I’ve even drilled tiny hole in them Leave cap lose and run it and see

[@philliphall5198]

Also check for spark when it stops

[@bradsimpson2103]

I have that exact same motor on my push mower and it started doing exactly the same thing. I'll run a tank of gas threw it and after I fill it back up it won't start again. I'll have to take the carburetor all back apart blow air threw everything then it'll start again. But until I put the air to it it will not start. There's gotta be a obstruction somewhere but darned if I can find it.

[@helpinguonline]

My video on doing all that will come out in one week. Not a hard project

[@gradyhernandez4699]

That's easy to fix.

[@Daddyrabbit_2]

By the time you remove and clean the carb the engine has had time to cool down, check for spark b4 pulling carb, maybe you'll find the problem

[@iamtheuse6321]

This is where you always start, clean the the carb and don't use gas with ethanol in it so it doesn't gum up on you.. Usually you don't need to take the carb off just remove the bowl clean it and the jet out good to go.

[@josephlarosa5648]

Mine does the same thing

[@Lola.y.KillaKash]

You habe to press that blue button first couple times Then hold the lever up then start it

[@philliphall5198]

Seems it’s stopped up at fitting in fuel tank , like a inline filter

[@schutztruppe]

mine does that exact thing but it's a new carburetor

[@utuBrV1oI]

All that pulling of the cord not good for one's back. lol My 22 yr old 22" push murray briggs & stratton mower has the same problem but it has side discharge & i use no bag. I just dont shut it off & fill the tank full so i have enuf gas to do the whole avg lawn. Takes 25 min. The mower can also vaccuum the sidewalks & driveway! No need for a blower! When cold, even after the winter, it starts on the 1st pull everytime. I do use stabil tho.

[@northwestguy4053]

Please show a kill switch diagnostic on this exact mower

[@JamesJohnson-rh5qw]

If the motor runs why are you checking for spark?

[@helpinguonline]

When ignition coils start to go bad they will run while the engine is cool and when it gets hot they will stop. That’s why I checked for spark when it was hot to see if the coil was bad. Very common problem.

[@waltertur9731]

It's the auto choke

[@clydes95cummins]

This is a common issue if you are using gas with Ethinal in it and don't properly winterize your equipment. Depending on how gummed up your carb is it may not start at all.

[@josephlarosa5648]

I guess I'm cleaning my carb

[@danielpadgett2831]

Run you some sea foam thru it every now and then it will help keep the carb clean.

[@allenad1974]

Fuel tank not venting

[@mikewall9486]

Kill switch may be worn

[@MowersNBlowers]

Why are you checking for spark? It was running!!!

[@helpinguonline]

When ignition coils start to go bad they can run when cool and then not produce spark when the engine gets hot

[@MowersNBlowers]

@@helpinguonline lol! An ohm test on the magneto would tell you that, you haven’t run it long enough to ascertain if that’s an issue. You’re going to have spark since it was running. Just a waste of time man! Stop checking the obvious