Fixing A Lawn Tractor That Pops & Backfires!

Тәжірибелік нұсқаулар және стиль

Fixing A Lawn Tractor That Pops & Backfires!
Does your lawn tractor pop and backfire when it warms up? Watch this video to see what may be your problem and how to fix it yourself.
Watch my video review on spark tester used in video here;
• TOOL REVIEW - Inline S...
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Easy to follow and thorough step by step tutorials do it yourself (DIY) to help you with your broken lawn and garden equipment including snowblowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
My favorite brands of spark plugs are NGK and Champion and are the ones I recommend.
I’ve been a small engine mechanic for many decades and also run my own repair shop so my videos are loaded with tips and tricks that I have learned and want to share with you. You will also find many tool and product reviews from top brands on my channel as well.
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Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DONYBOY73 “The Small Engine Doctor” assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DONYBOY73 “The Small Engine Doctor” recommends safe practices when working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DONYBOY73 “The Small Engine Doctor".
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Пікірлер: 354

  • @dmoore7519
    @dmoore75194 жыл бұрын

    Too bad you have to give common sense safety tips. I’m 65 and started working on lawn mowers when I was 9. Have all my fingers and still have my marbles!!

  • @dukesworld3020

    @dukesworld3020

    4 жыл бұрын

    I just turned 63 and I started when I was 10. And I still have all my fingers and toes. I never could understand how anyone could get hurt. All you have to do is use what god gave you.

  • @dmoore7519

    @dmoore7519

    4 жыл бұрын

    Duke's World agree!!

  • @hunter7476

    @hunter7476

    4 жыл бұрын

    yes butr you should still use caution when using dnagerous tools and chemicals im 14 and very careful but i still wear eye and ear protection and gloves when doing certain work its not a bad idea to practic saftey and he is not have to give it out the saftey tips he just wants to be safe

  • @kismetcorp

    @kismetcorp

    2 жыл бұрын

    First things first: safety first! Was one of the first sentences my 2 year old spoke

  • @flyinryan1986

    @flyinryan1986

    Жыл бұрын

    @@hunter7476 here is the difference your 14 they are in their 60s I will agree with the 60 year olds I am 35 most should be common sense like keep hands out of moving parts and safety glasses if needed the key removal if your the only one in your shop you know not to start it if other people are remove it common sense

  • @jesseramos6124
    @jesseramos61245 жыл бұрын

    Thank you so much for your help with this matter. I'm confident in my ability to replace the ignition modules.excellant video.

  • @p.a.f.mitasol8071
    @p.a.f.mitasol80715 жыл бұрын

    Appreciate your thorough clear approach to your vlogs Don. Its always a pleasure picking up tips & tricks in such a relaxed tutorial. 🤙Northern Territory Australia 🇳🇿

  • @donyboy73

    @donyboy73

    5 жыл бұрын

    greetings from Canada

  • @cliffmeadows6721
    @cliffmeadows67215 жыл бұрын

    This is a very helpful video. It was clear, concise, and not overly long. The camera views are excellent. Good job.

  • @user-zh5ip1ru3x
    @user-zh5ip1ru3x9 ай бұрын

    Have been watching your videos for a while now, and used 3 or 4 of them the other day to diagnose hard starting/missing issues on craftsman lawn tractor. Did a valve adjust, choke adjust and sanded down the flywheel magnet and re gapped the ignition modules. Runs great now.. thank you so much Don... your videos are very straightforward and easy to follow.. much appreciated!!

  • @Rattletrap2
    @Rattletrap22 жыл бұрын

    That is so cool Dony! Over 35 years ago, I took a small engine course with my Dad at a local high school in the evenings. The Instructor showed us that trick of using a business card to set the coil gap! I have never forgotten it! So cool to see you doing the same thing so many years later!

  • @grosseileracingteam
    @grosseileracingteam5 жыл бұрын

    I've had coils completely fail when hot,then work when they cool down. I like Kohlers,but genuine parts are EXPENSIVE here in the States.Nice catch Dony.

  • @jayneescher4945
    @jayneescher49455 жыл бұрын

    You are the best on the Internet!You get “right to it”&its about the work as it should be!not you or your hair or clothes or the weather or cameras or music blasting.Very thorough&very relaxed paced.

  • @billkrause4585
    @billkrause45853 жыл бұрын

    Good technique resolving the tractor problem, and a great tip for us once again. Keep these kind of knowledge sharing videos coming, we enjoy them a lot. Thanks you!

  • @ChuckD59
    @ChuckD595 жыл бұрын

    Great video Don. I'm here because my 15 year old CV20S on a Dixie Chopper suddenly started doing what yours did but much worse. Pulled the cover (what a PITA!) and found one of the spark plug wires chewed halfway through right at the module. New ones on the way. Thanks for showing the procedure so clearly and the great tip on those testers. Never heard of them.

  • @jimwoodward4243
    @jimwoodward42435 жыл бұрын

    Thanks for the help I changed mine out and it now run great

  • @localcrew
    @localcrew5 жыл бұрын

    I have a friend with a Dixon ZTR with a Kohler engine and he is having these same symptoms! I'm totally gonna fix his mower now with knowledge that I have gained from Donny the small engine guy! Thanks, Donny!

  • @daphlavor
    @daphlavor5 жыл бұрын

    I have a Troy built model similar to this one with a B&S engine, has the same characteristics, so thanks to you for showing us the issue, I still have to check out my key switch, it doesn’t always want to start it. Thanks again Donny

  • @MrDaveR-uq7iq
    @MrDaveR-uq7iq5 жыл бұрын

    I have a 22 Hp OHV Briggs and It is doing exactly what that engine is doing. It also has a dead spot and backfiring when accelerating. I have replaced everything twice but not the coils, Thanks Don, I NOW know its problem. I will not miss that backfiring, Thank You Again Don. Great Videos, Great Work.

  • @keithfrisell4271
    @keithfrisell42715 жыл бұрын

    Great video, have a craftsman with a 22hp Briggs had a spark but would not run , so I thought that with any spark it should run ? Well bought that tester after watching ur video review. Boom barely a spark changed coil , they only have one purrs like a kitten. That tester is great and I learned something. Thanks Donyboy and have a great day. Keith

  • @mikejones6974
    @mikejones69745 жыл бұрын

    I dig your disclaimer! Keep fixing them Dony Boy! I actually heard the difference while typing my comment! 😊

  • @FishTales-Reel-Life-Adventure
    @FishTales-Reel-Life-Adventure3 жыл бұрын

    Again... just what I needed to know! Thanks Don! This is the best on the Net!

  • @mjg263
    @mjg2634 жыл бұрын

    Wow, very informative and helpful vid, thanks Donny! I had a similar coil failure on a small Tecumseh LEV-120, it would start just fine but then as it warmed up it would pop and lose power then eventually die out. New coil fixed it right up, guess a winding went open or something.

  • @osbornebay944
    @osbornebay9445 жыл бұрын

    You are the best, happy to learn a skill each time watch your repair video. thanks a million. I just fixed a compression release issue on the Craftsman mower, but it still has to turn over 4 turns before starts. It has weak spark as well. I may put a new coil to it. Vancouver Island, Dale

  • @tonym6920
    @tonym69203 жыл бұрын

    Very informative vid, thanks Dony. Your camera work is always superb.

  • @kjay5056
    @kjay5056 Жыл бұрын

    Just a great informative video. You clearly explain everything and the camera work is great for those of us who learn better by seeing it be done. All your videos are so helpful, thank you again. I save money and learn at the same time.

  • @vanguy9780
    @vanguy97802 жыл бұрын

    Thanks for this excellent video. I always thought a coil was either good or dead but I learned the hard way and from this video that is not necessarily so. I tested both coils on my V twin and both were in spec. Like you, I initially thought the carb was the problem, but even a new carb didn't fix it. My engine was surging badly and would backfire as well. It wasn't until I saw this vid and I got a spark tester that I was finally able to diagnose the problem as a bad coil I have a lot less hair now but with the help from your video I FINALLY got it fixed.

  • @sebastian56309
    @sebastian563095 жыл бұрын

    Very nice video, thanks for explaining how parts work.

  • @greensfarmland
    @greensfarmland3 жыл бұрын

    Thanks this totally makes sense, testing the coil was erratic when testing the resistance, but it started and ran. I was thinking the carb, but it looked really clean, and did not have a kit to rebuild, so I am waiting on that, I guess I will get a new coil as well. Thanks!

  • @robeftyearian8760
    @robeftyearian87605 жыл бұрын

    Good job looks.lije you made right desicion to change both coils the other one looked week too keep them videos coming

  • @johnsamol9911
    @johnsamol99114 жыл бұрын

    Great video very thoroughly explained I never knew there was a tester for the ignition coil like that !

  • @kahealanikealakai555
    @kahealanikealakai5554 жыл бұрын

    Ok tyu very much I will check out your vids for repairs, I'll keep you updated on my progress.

  • @scottryan5369
    @scottryan53695 жыл бұрын

    Thanks for all the vids you do Donyboy, I had a feeling it was coil related after you mentioned the popping and poor running, seen it a few times in chainsaws and mowers etc, I like the inline testers, that's a great bit of kit and cuts out the guess work as such and confirms it is indeed coil related. I will have to let my mate know about them and see if we can source some here in Australia.

  • @donyboy73

    @donyboy73

    5 жыл бұрын

    check ebay also

  • @CdnRedneck1
    @CdnRedneck15 жыл бұрын

    Hey Don, always learning a lot from you. Great videos.

  • @arthurfricchione8119
    @arthurfricchione81195 жыл бұрын

    Another good one DONYBOY. Will definitely get one of those spark testers. 👍👍

  • @DK-vx1zc
    @DK-vx1zc5 жыл бұрын

    Thanks for another great video! I appreciate you sharing

  • @fred306801
    @fred3068013 жыл бұрын

    I was told taught they work or they don't. Sometimes you get one that will work when it is first started, but then after it gets warm it would quit. I see now that there is more to it. I learned something new today. Very cool video.

  • @ronwilson5906
    @ronwilson59065 жыл бұрын

    That was a great video very concise and easy-to-follow good job

  • @Smalltechguy
    @Smalltechguy4 жыл бұрын

    Donny, since I've been watching your channel, I have purchased those inline testers. I use them all the time even though nothing seems to be apparent. I've gotten a few tractors that the coils were so bad and if it wasn't a fuel issue then the coils are the culprit..Keep the videos coming.

  • @peipaulT
    @peipaulT5 жыл бұрын

    Nice video. Good information for diagnosing a rough running engine,

  • @andrewwoodward6560
    @andrewwoodward65605 жыл бұрын

    Nice work! Great set of testers, Thanks Don! From, Alberta.

  • @Colt3854
    @Colt38545 жыл бұрын

    Great information as usual Don. I feel like your apprentice. Greeting from Australia. Bloody heat wave here.

  • @marshallborder9089
    @marshallborder90895 жыл бұрын

    Thanks Don , good lesson !

  • @yveskc1
    @yveskc15 жыл бұрын

    Thanks for the info. Greatly appreciated.

  • @rogercarrico4975
    @rogercarrico49755 жыл бұрын

    Very good work. I really need a second spark tester. I can see that. 👍

  • @paulzacher5672
    @paulzacher56725 жыл бұрын

    Never knew a module could be weak. Thought it either worked or not. Great video

  • @JodBronson

    @JodBronson

    5 жыл бұрын

    @Paul Zacher - Now you know! It's called " Electrical Leakage ". During usage, the Module gets " hot ". In the Module, the Wires might melt through time and it create a small shortage / electrical leaks. This would make the Module weak, since electricity find the closes ground to get to. :)

  • @truckinchihuahuaalvieschre2494

    @truckinchihuahuaalvieschre2494

    4 жыл бұрын

    @@staind288 he has a video that he has said it is rare but there are exceptions to it.

  • @billydugie8922

    @billydugie8922

    4 жыл бұрын

    me either

  • @tier3rd375

    @tier3rd375

    3 жыл бұрын

    Some modules use a microprocessor to advance the ignition timing for high rpms. Sometimes that can go bad and make the engine run terrible at full throttle. Though the opposite was happening here in which the engine was running poorly on low throttle.

  • @frankdavidson9675

    @frankdavidson9675

    3 жыл бұрын

    i replaced one tha thad burned thru till it finally quit it was just running on 1 cylinder

  • @davidball3081
    @davidball30813 жыл бұрын

    Thanks!!! Looking forward to fixing my riding lawnmower.🙂

  • @armondedge8840
    @armondedge88404 жыл бұрын

    Excellent video. You make it look so easy.

  • @fatmanbud
    @fatmanbud5 жыл бұрын

    Thank you very much for sharing you knowledge

  • @itsgalf
    @itsgalf5 жыл бұрын

    Nifty little spark tester. Thanks for the video!

  • @tkskagen
    @tkskagen4 жыл бұрын

    Great "EDUCATIONAL" Video!👍

  • @jamesmullins3219
    @jamesmullins32195 жыл бұрын

    thanks. great tips. good diagnosis.

  • @Chris-Fennimore
    @Chris-Fennimore5 жыл бұрын

    Good Coil diags. Sometimes a twin cyl with one bad coil can mislead you to believe you have a carb issue.

  • @mikemoore9757
    @mikemoore97575 жыл бұрын

    As always, a very good and informative video.

  • @paulmorrey733
    @paulmorrey7335 жыл бұрын

    Thanks Don Great video

  • @mebcool
    @mebcool5 жыл бұрын

    Thanks DB73 Great job as usual. I need to get a set of these testers.

  • @hankbridges5055

    @hankbridges5055

    5 жыл бұрын

    Auto parts stores or Amazon or EBAY has them. They're called in- line spark testers.

  • @midninteranger4315
    @midninteranger43155 жыл бұрын

    Great video thanks for your help.

  • @831Adventures
    @831Adventures5 жыл бұрын

    Excellent instructions and video

  • @breeze787
    @breeze7875 жыл бұрын

    Its so nice to come back and see you again. There are so many mower repair videos now that I've been away for awhile. But I've come back please forgive me. I shaltn't ever desert you again.

  • @clarencewatkins1634
    @clarencewatkins16344 жыл бұрын

    Thanks for a informative and to the point video 🙂

  • @pyrog.c.c89
    @pyrog.c.c895 жыл бұрын

    You are a genius thanks Danny

  • @billglueck9705
    @billglueck97053 жыл бұрын

    Great video. Thank you. I will be doing this job very soon.

  • @freedumb2010
    @freedumb20103 жыл бұрын

    yes, very clear tutorials, thank you

  • @ojjenkins7110
    @ojjenkins71105 жыл бұрын

    Nice fix Don. Thanks.

  • @mattb9664
    @mattb96645 жыл бұрын

    A video on changing out the Transmission Fluid in a “Sealed” transmission on a little lawn tractor (ie. John Deere LA series) could be a good video to do. Overall process of getting to the concealed ‘fill’ plug.

  • @rooseveltrobinson4192
    @rooseveltrobinson41922 жыл бұрын

    Thank you for the video that's exactly what is going on with my mower

  • @ermannodangelo1062
    @ermannodangelo10625 жыл бұрын

    Great job diagnosing the problem, that why I like watching your videos. Could you use a 12v test light to do that? I’m hoping you do a video on that Honda snowblower in the background.

  • @lyndelbeckwith1706

    @lyndelbeckwith1706

    5 жыл бұрын

    You could, but someone has to turn it over for you.

  • @MrUbiquitousTech
    @MrUbiquitousTech5 жыл бұрын

    Good info, thanks for sharing!

  • @knighthawk86855
    @knighthawk868555 жыл бұрын

    Great fix Donny.

  • @rickbraden4272
    @rickbraden42725 жыл бұрын

    First video of yours I've seen. I like it a lot.

  • @63256325N
    @63256325N5 жыл бұрын

    Thanks for the video.

  • @ioufk4real811
    @ioufk4real8115 жыл бұрын

    Thanks man my mower is doing the same thing and all these idiots I take it to can't figure it out. Again thanks great video

  • @geojor
    @geojor5 жыл бұрын

    always great Dony, thank you ...

  • @Fireship1
    @Fireship15 жыл бұрын

    Thumbs up 👍! Great lesson in troubleshooting!

  • @warrenlouisiana2277
    @warrenlouisiana22774 жыл бұрын

    Awesome fix,, well done brother,,,

  • @bradc.4334
    @bradc.43343 жыл бұрын

    Thank you Don once again. I've watched many of your videos and learned something from every one. Your approach, knowledge and quality of the videos is fantastic. Is there a way to create a "Library" of your videos? Hope to hear from you.

  • @donyboy73

    @donyboy73

    3 жыл бұрын

    you can create your own playlists

  • @dinohudson1432
    @dinohudson14325 жыл бұрын

    Thanks for the gumball Mickey 👍

  • @bobwelch5056
    @bobwelch50564 жыл бұрын

    Big difference good job

  • @gosselinsergegs
    @gosselinsergegs2 жыл бұрын

    Thank you same problem

  • @ccsargent
    @ccsargent5 жыл бұрын

    Another very well done and informative video. Thanks. One question, did you check the gap on the bad coil before you removed it?

  • @donyboy73

    @donyboy73

    5 жыл бұрын

    yes

  • @CrazyCanuckFitness
    @CrazyCanuckFitness2 жыл бұрын

    Another great solution. Thanks

  • @tonym6920
    @tonym69205 жыл бұрын

    Great video Dony!

  • @richardclark8316
    @richardclark83164 жыл бұрын

    Thanks for helpful video

  • @360Prairie
    @360Prairie5 жыл бұрын

    Your advice about not over doing it on the bolts at 5:48 is very good advice. I can't tell you how many bolts I've broken because I thought everything had to be SUPER tight like a gorilla on steroids was turning the wrench.

  • @chrisbcritter6112

    @chrisbcritter6112

    5 жыл бұрын

    That was my problem with plumbing issues. I'm not allowed to work on faucets around the house anymore.

  • @watermanone7567
    @watermanone75675 жыл бұрын

    Thanks for the great video. I have had several "Smart Chokes" on Kohler's that fail recently. Do you know about this issue and do you have a cure without buying lots of vacuum units and heat control modules from Kohler? I know there is a bulletin from them but they are used on many different makes of machines and the answers are not clear. Thanks

  • @ScottMiller-tu3gg
    @ScottMiller-tu3gg4 жыл бұрын

    You mentioned removing and reinstalling the small (positive) wires on the ignition coil. Are they not (negative) or ground wires that make a connection to ground when the key is turned off?

  • @pyro323
    @pyro3235 жыл бұрын

    Those Kohler engines are awesome. Cub Cadet uses them in their line of lawn tractors.

  • @louislandi938
    @louislandi9383 жыл бұрын

    What a GREAT lesson! I will remember that one. How old were you when you started learning? Was it a family member or did you just figure things out on your own? Many thanks!

  • @Lovinflyindrones2022
    @Lovinflyindrones20225 жыл бұрын

    YOU’re the GREATEST. LOVE ABSOLUTELY LOVE YOUR VIDEOS!!!!! Thanks DONYBOY73

  • @Chris29031
    @Chris290315 жыл бұрын

    Great video thank you

  • @hdrk59
    @hdrk595 жыл бұрын

    Great video ..thank you

  • @GrampiesWorkshop
    @GrampiesWorkshop5 жыл бұрын

    What a difference eh!! Nice job!!!

  • @dpm1964
    @dpm19643 жыл бұрын

    Thanks Don for another great video. It looks like you put the second coil upside down. Does it matter?

  • @lestergillis8171
    @lestergillis81713 жыл бұрын

    I did not know you were up there in Canada until this video.

  • @robeftyearian8760
    @robeftyearian87605 жыл бұрын

    Pretty cool find so quick so eady fix tganks donny

  • @leeturner1838
    @leeturner18385 жыл бұрын

    thanks donny i just bought a sears 30 inch hydro rider!!!!!!!!!!!!!

  • @greenmarine5
    @greenmarine55 жыл бұрын

    FYI, I'm an industrial Printer and most business cards are printed on 100# uncoated stock or 10 point..or .010 of an inch paper which is 1000 of an inch. So to confirm a business card has a gap of 1000 of an inch. Spot on donboy !!

  • @waylonmccrae3546

    @waylonmccrae3546

    4 жыл бұрын

    .010 is ten thousands .001 is one thousands ..... isn't that correct ?? Thanks 😉

  • @greenmarine5

    @greenmarine5

    4 жыл бұрын

    @@waylonmccrae3546 you are 100% correct and thank you for the correction, 10 point paper is actually 10/100th of an inch

  • @waylonmccrae3546

    @waylonmccrae3546

    4 жыл бұрын

    @@greenmarine5 all good .... wasn't trying to be a smart butt , but as someone who loves to build engines that just caught me funny when .001 can be the difference between a successful rebuild , or scrap metal failure !! 😎

  • @brianpair2934
    @brianpair29344 жыл бұрын

    I never knew the ignition coil would cause popping. I always thought that was a valve issue. I learned something, I have a 17 hp single cylinder Briggs engine. It was popping and backfiring, I adjusted the valves exactly according to specs and still have issues when it gets hot. Sounds alot like this engine did but it doesn't hesitate?? Do you think it's the coil on it or do I need to check the valves again?

  • @danfarge7447
    @danfarge74475 жыл бұрын

    thank you for the information I have a lawn boy that I replaced the ignition module on it starts and runs but does not rev up to proper high speed RPM any ideas what may be wrong carb has been cleaned it's a silver series thank you Dan

  • @65csx83

    @65csx83

    4 жыл бұрын

    Missing one of 3 things: fuel, air, or spark.Does adding extra fuel through the carb intake cause it to rev up?

  • @frankmastrocola
    @frankmastrocola Жыл бұрын

    Thanks for that great info. I have a John Deere x300. It looks like there is only one ignition module. Is that possible? Thank you

  • @michaelcee8348
    @michaelcee83485 жыл бұрын

    i love donny boy. thanks

  • @michaelspeakman8924
    @michaelspeakman89245 жыл бұрын

    Thanks

  • @tomycodd
    @tomycodd5 жыл бұрын

    Thanks for the great video! I just this week had a Cub Cadet tractor in for the same problem and it turned out to be that mice chewed into the coil and the primary wire.Told customer he needs to do some rodent control so he does not have this problem again.

  • @JodBronson

    @JodBronson

    5 жыл бұрын

    To prevent mice chewing on Wires in Lawn Mower and Cars.... Take your favorite " Cologne " and spray on the Engine / Fins / Wires / Etc.... When the Engine gets hot, it smells good for you and Mice don't like the scent! Musk is also good for it, since it's like an Animal Scent.

  • @velox731
    @velox7315 жыл бұрын

    Kohler makes a great engine. Nicely done!

  • @bigrockinu
    @bigrockinu2 жыл бұрын

    Nice I have a craftsman 7000 Delete series, with a the kohler motor KT745 26cc . Doing some of the same thing ,when I Engage the blaze it starts to bog down ,I have to get 2 of those babies also.

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