How To Diagnose An Ignition Module Without Any Special Tools

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  • Опубліковано 8 січ 2025

КОМЕНТАРІ • 563

  • @drreason2927
    @drreason2927 4 роки тому +19

    Wished I'd a found this last week! My new module didn't help, just like you said. But your gap instructions was a great bit of knowledge. Thanks!

  • @billdakelski
    @billdakelski 11 років тому +146

    Excellent FIVE Star video:
    1. contains no annoying music
    2. gets to the point quickly
    3. covers topic completely
    4. speaks clearly
    5. Thank you

    • @drewwood6790
      @drewwood6790 5 років тому +2

      Totally agree it's been 6 years since you've left this message thats forever ago. Are you still alive?

    • @user-gi3xj8nz3s
      @user-gi3xj8nz3s 5 років тому +3

      Yeah just wondering are you still making UA-cam videos?

    • @ENDERTON2000
      @ENDERTON2000 Рік тому

      I HATE the annoying music

    • @seasonedtoker
      @seasonedtoker Рік тому +1

      First time here? Donnyboy's channel is one of the few and probably the oldest 'no-nonsense' content channel on UA-cam

  • @ArtilleryForLife
    @ArtilleryForLife 9 років тому +2

    So, I found a deal on an ignition module for my old wheelhorse 800....and then I found this video. Needless to say I'll try this first. But regardless, MANY, MANY THANKS, You've made my life much more easy on many occasions! More important you're knowledge has kept my farm equipment running. Keep up the great work!

    • @donyboy73
      @donyboy73  9 років тому +2

      Gordon Hale you're welcome

  • @TheGallagher5
    @TheGallagher5 3 роки тому +2

    Thanks so much for this concise and accurate video. My 20 year old Toro push mower just wouldn't start this week. Changed plug, checked and cleaned carb, new gas, new air filter and still no joy. Did this quick test to determine I had no spark and picked up a new ignition module and I'm back in business!

  • @patriot4359
    @patriot4359 5 місяців тому +1

    IN A FEW SECONDS YOU GIVE ANSWERS WITHOUT MANY USELESS WORDS ...THANKS

  • @stuffyteddybare
    @stuffyteddybare 5 років тому +13

    these are the most helpful, simple videos..what the internet was made for..thank you for making them..cause real people are watching them and learning!

  • @pavid501
    @pavid501 12 років тому +4

    Dony I have been watching your videos since the begining and they have helped me diagnose my small engine problems and has saved over 500 dollars in parts. Thank you for the help you have given me and the rest of your subscribers. Keep it up

  • @jimm7439
    @jimm7439 9 років тому +1

    No joy after rebuilding the carb. Adjusted the gap as you demonstrated and blower started on first pull. Many thanks, man! Much appreciated!

    • @donyboy73
      @donyboy73  9 років тому

      +Jim M you're welcome

  • @markmcewen3959
    @markmcewen3959 Рік тому +1

    Thank you for your work. Your methodical process-of-elimination approach makes the repair simple, and ultimately, obvious. Bravo.

  • @gogivettenut
    @gogivettenut 3 роки тому

    Thank you for the diagnose.... I disassembled my entire snow blower to find out I had 2 kill switches 1st at the low idle shut off throttle and 2nd at plastic key pull out. it was the low idle shut off!!! with both ground wires removed set the gap on the coil had a strong spark and fired right up THANK YOU.

  • @birdseyeview1543
    @birdseyeview1543 8 років тому +1

    Thanks Donny, mine was indeed the ignition module, but narrowing it down quickly sure helped a lot. Love this old LawnBoy, glad to keep her running.....

  • @mrbrock72
    @mrbrock72 8 років тому

    Dony this video just saved me from buying a $50 ignition module. I was getting no spark on a craftsman with B&S 190cc. I did try replacing the spark plug but that didn't fix it so I figured it was the ignition module. After seeing this video I regapped the module and now the mower fires up on the first pull! It is much easier to pull the cord now so I think the module was rubbing against the magnet. Thanks!

  • @epiphaknee
    @epiphaknee 12 років тому +2

    What a great group of tips for diagnosing small engine problems (there is hope for us viewers after all)! It is always a bonus to learn tips that require no specialized tools.

  • @nivenherrington
    @nivenherrington 10 років тому +1

    Thanks for the video.
    My older mower would not turn over. Followed your video..No spark.. New $50 ignition coil and a good carb cleaner she is up and running again.
    Informative video... Much appreciated!

  • @pauldowding8185
    @pauldowding8185 7 років тому

    After screwing around trying to find out why I had no spark on my mower I said to myself" What would Dony do?", watched this and had my mower running in 10 minutes. Turns out that the shutoff connector attached to the coil and to the brake mechanism was not quite always releasing from ground. Adjusted it and motor runs better that it has for years. I also used the cc method to adjust the coil clearance, that my also be giving me a better spark. Anyway, thanks a lot for you videos, it is good to know that there is a resource here that can save us some time and money.

  • @ken444444
    @ken444444 9 років тому +3

    This a well done and informative video on the subject. Thanks for editing the video and not showing 12 minutes of rambling talk, shaky camera, and 95% useless footage!

    • @donyboy73
      @donyboy73  9 років тому

      +ken444444 thanks lol

  • @georgevargas56
    @georgevargas56 6 років тому +4

    Thanks for the video. I almost went out and bought an ignition module, needlessly. truly appreciate it.

  • @ratdude747
    @ratdude747 11 років тому

    Good video. Used it to fix a Poulan 22.5" Push Mower with a B&S 3.5 Classic my buddy pulled from the curb. The buddy swore it was an ignition module... turns out the PO installed it upside down and had it rubbing the flywheel! The safety bar wire was unplugged too... regapped it in the right orientation and it runs well... and I got a free mower!

  • @user-gi3xj8nz3s
    @user-gi3xj8nz3s 5 років тому +1

    You just save me a trip to the lawnmower repair shop.👍. I just try your techniques and they work . Great videos like always, keep them up

  • @cultwho
    @cultwho 12 років тому +2

    excellent tip on placement of the coil. When I first watched this video, I thought for sure the engine couldn't be two-stroke as I had never heard of a mower with such an engine although most line trimmers and blowers have 2 cycle engines. While they (2-strokes) are a simpler, yet higher performance engines they burn more fuel and require more maintenance than a 4-cycle engine per hour of use.

  • @dan.krause
    @dan.krause 10 років тому

    Filed the posts and reset the gap.... one pull and it started. Thank you for posting!

  • @saadams4937
    @saadams4937 7 років тому +5

    Wow! Short, clear and to-the-point! Thank you so much!

  • @daninthesand
    @daninthesand 11 років тому

    I ended up bringing the coil to a repair shop and they tested it. Toast! So I am switching to a magneto type. I hope this solves the problem if not, then well everything is repaired except the valves....but at least with your help donyboy73 i have learned a lot. thanks a million.

  • @bobbyd218
    @bobbyd218 11 років тому +8

    As others have said, you do a marvelous job making these videos. If you're not already, you'd sure make a great shop teacher in a technical school....You certainly help many here, including myself, for which I'm very grateful. Keep up the good work......One of the best channels on YT.....

  • @leevillagomez9390
    @leevillagomez9390 2 роки тому +1

    Thank you Dony. I have been searching for assistance on how to repair my mower. I like DIY projects. If this works I will definitely subscribe to your channel and look to you for more DIY small engine repairs. I’ll let you know in the morning.

  • @pacohome1
    @pacohome1 7 років тому +3

    What a great video ! 1st video I saw that was concise and right to the point, eliminating all of the usual problems without
    wasting $50 on a coil that is not needed

    • @donyboy73
      @donyboy73  7 років тому

      you're welcome, make sure you are subscribed

  • @JuanGonzalez-ig9su
    @JuanGonzalez-ig9su 5 років тому +1

    Right on time to cancel my order you just saved me $60.00 ... thank you God bless you.

  • @fomoco1454
    @fomoco1454 9 років тому +13

    He's isolating the coil by unplugging the "kill wire" so it can't ground out the coil. He's taking the coil ground wire out of the circuit. Great video.

    • @malcolmcapps8816
      @malcolmcapps8816 5 років тому

      Some don't have a ground wire

    • @pops9190
      @pops9190 4 роки тому

      thanks for that further clarification. Love learning these things.

  • @arthurbania9236
    @arthurbania9236 5 років тому +6

    I almost got new ignition module for my tecumseh, absolutely needlessly, good I watched that video, best appreciation to your video Donny, thx:-)

  • @laurensims2466
    @laurensims2466 8 років тому +1

    Very good video, you explain it well. I'm not electrically oriented, so watching this was what I needed to find the problem in short order. Thanks!

  • @petratical
    @petratical 7 років тому +3

    Thank you, you showed me something I always wanted to know. Isolating the coil from any switch! Brilliant, very good!!

  • @semco72057
    @semco72057 10 років тому +2

    That is another thing to check out when working on mowers. I want to thank you so much for this tip.

  • @arthurmcgivern3303
    @arthurmcgivern3303 7 років тому

    I did not find or see a spark with this, but holding the spark plug in my hand i did get a little tingel when i spun the fly wheel over, good boy Dony, Art in Alberta

  • @clarencethibodeaux2087
    @clarencethibodeaux2087 8 років тому +17

    I have watched most, if not all of your videos and have learned lots. Thank you Dony.

  • @freebird1ification
    @freebird1ification 12 років тому

    thanks donny it sure is nice of you to show all us folks how to do these things ---- some of us are on a fixed budget but all our costs for living are not and the guys close to me charge 80.00 dollars an hour to work on anything we take to them some times it's cheaper to just go and buy a new weedeater or chainsaw because the cost is only 10- 20- bucks different ....

  • @auburnalum9019
    @auburnalum9019 8 років тому +1

    Thank you! I did the same process on my John Deere riding lawn mower with a Briggs and Stratton engine. Fixed the problem!

  • @billydenham9313
    @billydenham9313 5 років тому

    I'm working on a Lawn Boy just like the one in your video. The lawn mower just stopped running on my one day and i couldn't get it to crank back up. So, I took it into my garage and started taking it apart. The flywheel key looked a little ruff so i replaced it with a new one. I also sprayed it down with degreaser to clean it up some. I also cleaned the flywheel and coil to make sure everything was good and clean. Then i used a business card to set the coil gap. I also put a new spark plug in it. When i went to crank the lawn mower it still would not crank. So, I pulled the plug to see if i was getting spark. I noticed that when i laid the spark plug close to something metal(Engine) it would spark off the side of the spark plug to the Engine, but not at the tip? Then i laid the spark plug away from anything metal to see if i had spark at the tip of the spark plug, I had no spark? This has really baffield me? PLEASE HELP!!! THIS IS MY FAVORITE LAWN MOWER!!!!

  • @holdentudix3830
    @holdentudix3830 Рік тому

    Great idea man.I’m doing a generator right now and was about to order a coil.Thanks

  • @nickl1682
    @nickl1682 7 років тому

    Nice info . I still learn something from every video I watch . Thanks

  • @nelsonsantos770
    @nelsonsantos770 3 роки тому

    Awesome video! Now I can figure out! The gap on the flywheel was so big!

  • @danhanks1
    @danhanks1 10 років тому +1

    This was great. My mower is starting again thanks to your excellent videos!

    • @donyboy73
      @donyboy73  10 років тому

      you're welcome, make sure to subscribe

  • @t4862rm
    @t4862rm 7 років тому

    Thank You for the explanation of how the coil works. I fixed mine by adjusting my spring for the shut off switch. Saved me money by not buying a new coil, which I thought was the problem for no spark.

  • @mikeslayer5926
    @mikeslayer5926 2 роки тому

    IM sure someone has already mentioned wire brush the rust off the magnet and the module and regap,...ive had half a dozen or more where rust was the culprit even when it apeared to be gapped properly,...but were way humid down here in kentucky,...also those old 2 stroke lawn boys love to clog up the muffler and wont run till its cleaned,..thanks for your videos
    ,mike

  • @oregonwoodcutter2813
    @oregonwoodcutter2813 10 років тому

    Hey Doyboy:
    Your lawnmower and chainsaw videos are top notch for us do it yourself mechanics.
    Keep posting your troubleshooting tips, repair videos.
    Thanks.
    Oregon Woodcutter

  • @1catbrains
    @1catbrains 6 років тому +3

    One of the better videos I’ve watched. Clear concise and to the point. Thank you.

  • @luisperea5593
    @luisperea5593 7 років тому +1

    i just used this technique to fix my power washer!!! Thank you so much!!!

  • @MarkSWilliams27
    @MarkSWilliams27 3 роки тому

    Your videos are always informative and well explained. You are such a good teacher. Thanks.

  • @Mihu24
    @Mihu24 Рік тому

    Thank you alot mate for all your efforts to show în the detail all the solvings on the gasoline engines. I learned alot from you !

  • @GtEtroublemaker
    @GtEtroublemaker 7 років тому

    Great video you saved me for buying a new lawnmower. Thanks! Is running great after adjusting coil

  • @colliecandle
    @colliecandle 10 років тому +5

    Many thanks Donny for the good advice you give in this video - I followed the instructions for checking the gap between the stator and the fixed coil. It worked very well - I now have someone's throw away McColloch hedge trimmer which is up and running as it should. You are a star ! Liked and subbed your channel !

  • @dave1135
    @dave1135 12 років тому

    hey dony, wanted to say that for those people who have the older lawnboys, 70's and 80's, some of the models were set up as either open to run, or grounded to run. these were ones with the early cdi models

  • @debraorr3904
    @debraorr3904 9 років тому

    Boy you know what you are doing and you are easy to understand. Good work!

  • @SteveRobReviews
    @SteveRobReviews 12 років тому

    Fantastic,used it on 4 engines i thought were at the right hi rpm and the tack showed me I was 400 off. I set the lawnmowers at 3000-3100 . I noticed the tab that holds the govenor spring is bent or the spring looses tension. I was waiting to see a vid with your new tack , I should have had one years ago.

  • @QuaabQueb
    @QuaabQueb 3 роки тому +4

    An important point to mention: If you are working on a "vintage" era lawn-boy the ignition coil actually has to be connected to ground to run! These have the exact same looking coils as the one there in your video but they are white! For some reason those had a very high failure rate which is why the moved away from that design. Furthermore, just because you see spark it does not mean the coil is good, the spark can be weak or not hot enough to ignite the fuel/air mixture. The coil can also fail intermittently as it heats up with use.
    I have spent MANY hours chasing bad coils, particularly on old lawn-boys and Tecumseh engines.
    Condenser and points is a whole other deal if you are working on a really old machine.

  • @davido8941
    @davido8941 4 роки тому +1

    Good video. Never really thought about this. Always checked it electronically.

  • @SDsailor7
    @SDsailor7 3 роки тому

    Video was excellent!
    Now i know how to test for spark.

  • @eugeneflorczyk2509
    @eugeneflorczyk2509 5 років тому +1

    this really helps me alot. Now to test mine to see if i have to replace the module or not.

  • @garymirenda1983
    @garymirenda1983 8 років тому

    Great clear presentation helped me correct my Briggs coil problem.

  • @planecrazyish
    @planecrazyish 5 років тому +1

    Great videos, highly informative. short and to the point. I'm learning a lot form you. Many thanks.

  • @enlightenCA
    @enlightenCA 3 роки тому

    I've also had luck sanding the rust off the flywheel to regain spark. Great video thanks for the info.

    • @ballslickmaakalickmyballs4916
      @ballslickmaakalickmyballs4916 3 роки тому

      Flywheel rust don't matter as a lot of ppl think. It's rust where the coil bolts on that you want to sand and make sure got good contact

  • @fred306801
    @fred306801 10 років тому +16

    Hey Donny,
    When I take one down that far I always clean the magnets on the flywheel and the coil. Then reset the gap with the business card. Sometimes it is hard to see IF your getting spark. So I found a better way to tell. I just get the wife to hold the spark plug. And she lets me know. Of course its the little things in life that make it worth living. Good to see you Donny keep up the good work.

    • @donyboy73
      @donyboy73  10 років тому

      lol

    • @dixoncider7256
      @dixoncider7256 10 років тому +4

      hahhaha. when i was a kid i did that. i can still feel it.

    • @stevenbryant4718
      @stevenbryant4718 6 років тому

      you know what they say: don't put your finger where you wouldn't your dix. I have a feelin' wet willie won't be cider tonight, he'll be a couch capt.

  • @jimdavidson5208
    @jimdavidson5208 8 років тому

    Actually its a magneto not an ignition module. Use a drill and spin the motor with no spark plug to see faster revs and more spark. You will see it immediately if you have spark or not. BUT you did say without any special tools LOL. Another great video from the best OPE mechanic on youtube.

  • @xcodychaosx
    @xcodychaosx 3 роки тому

    Cool deal man wasnt wanting to go spend 15 bucks on a tester when the part is also 15 bucks but this is a nifty trick

  • @Pretzel114
    @Pretzel114 9 років тому +3

    Great video sir, I always learn something new when watching your videos. Thanks for making them.

  • @bodeine454
    @bodeine454 7 років тому

    Thanks for the video!
    I have this same Lawn Boy with a similar problem and wasn't sure how to isolate that switch from the ignition. Super simple...

  • @jasonmushersee
    @jasonmushersee 12 років тому

    I have that same lawnboy, had to do the same last summer. Yesterday i diagnosed a bad flywheel on a tecumseh H60, weak magnets not producing enough field. Engine had loss of power anything above idle. Coil & points/condenser new, engine timing perfect. All i did was watch all your videos (0_0) and installed a different flywheel.

  • @russreid6881
    @russreid6881 10 днів тому

    Excellant video. GREAT help. Thank you!

  • @87GP400
    @87GP400 4 роки тому +2

    Short and sweet ! Thanks for the info !

  • @stuffyteddybare
    @stuffyteddybare 6 років тому

    Your videos are always to the point, have great tips, simple to apply and understand, don't have special effects, crappy music, or poor sound/video...you'll never get your own tv show like you deserve because you save people too much money..damn

  • @everydaydogs
    @everydaydogs 12 років тому

    Good grief! I've been removing the shroud, disconnecting the wire, putting shroud back on, and checking for spark. Thank you for saving me loads of time and effort in the future. Gah!

  • @donyboy73
    @donyboy73  12 років тому

    thanks, yes i have a few spark test tools but in this video i wanted to show people this way since i get asked this a lot

  • @josephjorgensen3282
    @josephjorgensen3282 6 років тому

    I spent hours going in circles to just find out the kill wire was not moving far enough to stop grounding out when the safety handle was held what a day thanks this video would have helped allot

  • @williamdavis1781
    @williamdavis1781 8 років тому

    Thank You. This eliminates a lot of doubt & extra expense.

  • @aaaabbbb4528
    @aaaabbbb4528 4 роки тому

    thank you so much i had a problem with my generator and using your video it helped me so much to fix the problem......

  • @johnsmythe5706
    @johnsmythe5706 8 років тому

    Thanks, helped diagnose wiring problem.
    Thanks most for your direct video without 5 mins of how the problem started, how your old one was better, blah blah blah

  • @phillipkramer6638
    @phillipkramer6638 7 років тому

    I bumped into the spark plug which was exposed on a pressure washer while standing in water. That was a quick lesson on what not to do.

  • @classic287
    @classic287 10 років тому

    Dony, Thanks for this vid. My riding mower was dead. I disconnected that small wire on the ignition module, and it fired right. I had to pull the plug wire to shut it off though. I guess I'll have to check all the safety switches. Thanks again.

    • @donyboy73
      @donyboy73  10 років тому

      could well be the safety switch for sure, sometimes the clutch one goes

    • @classic287
      @classic287 10 років тому

      donyboy73 Ya, but it's too much work to get to it on a Weedeater One, so
      I'll just run it with the wire disconnected from the ignition module. Runs great.

  • @dwoodog
    @dwoodog 12 років тому

    My ignition module on my 2 yr old Toro personal pace recycler mower failed on me. I was rather PO'd that a $500+ lawnmower was giving me trouble in less than 2yrs, but between my luck with small engine equipment and the fact the whole mower is $500+ not just the ignition module I accepted it. Lucky I found another one lying around. I just had to drill the holes a bit bigger on it and it fit.

  • @fins59
    @fins59 3 роки тому

    Good video, short & sweet & good information, suscribed.

  • @anthonyfoster4804
    @anthonyfoster4804 4 роки тому +1

    After you do this and still have no spark check the magnets on the fly wheel for strength. The tiller I am working on the fly wheel magnets are extremely weak. Great video.

    • @clintronicsrva
      @clintronicsrva 4 роки тому +1

      I have a mower and a screw driver will barely stick to the magnet. No magnet = no spark. people should check this first before they do anything if they have access to the magnets.

  • @traveller5551
    @traveller5551 Рік тому

    Thanks a ton for these videos! I learn a lot from them.

  • @daninthesand
    @daninthesand 10 років тому

    William. Yes i eventually did replace with magneto so no pints or condenser. I decided to tear down the motor and replace oil seal etc. I am just waiting for parts...have not had time to work on it anyway. thanks for your insight though.

  • @spelunkerd
    @spelunkerd 12 років тому +1

    Good video, Dony. I still find it interesting to see how these work with no battery.

  • @danielcorrea8168
    @danielcorrea8168 9 років тому

    This video helped me tremendously. I'm going to book mark this video for future reference. Thanks for sharing.

  • @shaneworley394
    @shaneworley394 8 років тому

    your videos are by far the best,ive learned alot and you have saved me a ton of $$ ty for your videos

  • @yalerich7417
    @yalerich7417 Рік тому

    Nice @ to the point-thank-you for your expertise!

  • @Exodus-1991
    @Exodus-1991 8 років тому

    Thanks man, you helped me fix two of my weed wackers with this video

  • @oc_villain3833
    @oc_villain3833 9 років тому

    I sure enjoy your videos... Thank you for being on UA-cam ..

  • @jimb1786
    @jimb1786 2 роки тому

    While that works on about 98 percent of small engines I will add this. Some early F engine Lawnboys had a ground to run coil. They only used them for a few years. But all in all disconnecting the wire will tell the tale.

  • @toddwickham3350
    @toddwickham3350 8 років тому

    Hi "Great video" you can also gap the flywheel and magneto by folding a piece of regular paper in four. I've done that for years!

  • @stuszith
    @stuszith 10 років тому

    Nice instructions Dony -- I never had a Lawn Boy -- 2stroke stuff gets smelly .

  • @madforit9661
    @madforit9661 8 років тому

    Just saved me a load of money Nice one Thanks

  • @stephenjohnston6623
    @stephenjohnston6623 6 років тому

    Hey Donyboy. You just saved me smashing my mower to pieces with the biggest hammer I could lay my hands on. Really! Sensational tip. Sensational. All running again. Thanks Man !

  • @vetterfellow
    @vetterfellow 8 років тому +1

    Thank you, Dr. Small Engine.

  • @johnlibonati7807
    @johnlibonati7807 4 роки тому +2

    This is gold. That’s a great mower by the way.

  • @lakebrunnerscaffolding6832
    @lakebrunnerscaffolding6832 3 роки тому

    The best informative video well done 👍

  • @raymondhoagland8602
    @raymondhoagland8602 4 роки тому +1

    Thanks for the info. I'll try this on mine !!

  • @markhumphrey4834
    @markhumphrey4834 5 років тому +4

    Thanks for doing what you do D ,much appreciated rock solid info man

  • @riceski
    @riceski 12 років тому

    I just bought the ready made plug with a the clamp welded on to it -- and I am sure you know if you do this a lot that is a good investment. For infrequent use like most people - you have the VERY BEST WAY. Your videos are great. Do you make DVD's of them? Thanks Gary in SC USA

  • @jamesrichardson559
    @jamesrichardson559 Рік тому

    That 2 cycle Lawnboy is a great mower.