Simple Trick To Diagnose A Bad Ignition Module (Coil) On A Lawnmower, Chainsaw, Weedeater Etc.

[@Rein_Ciarfella]

I’m subscribed to a lot of small engine channels and I’ve watched a lot of videos on this subject. Yours is the clearest, simplest and most straightforward instruction I’ve seen. Well done! This also goes for several other subjects - clear, simple and easy to understand. Thanks! 👍🔧

[@TheRustyRooster]

Preach T-Bone.... yall say it with me... "To Easy "

[@charliereed4642]

Great info T-Bone I like your absolute simplicity and honesty!!!

[@baldeagle242]

Easy as that… Show me the money! Great tips at the end too 😁👍

[@fort3463]

I like you small engine hacks.

[@roderickwelch6087]

It helps from what you passed on😊😊😊😊

[@knighthawk86855]

Great tip. I ran into an engine, 8.75 series briggs on a toro timemaster, with such a blown head gasket, the oil got around the head bolts, and the head, and the gasket, it isolated the head from the block, and took the ground away, the spark plug would spark against the block, but not screwed into the head, a real head scratcher for sure.

[@dkupy100]

That was a one-in-a-million cause.

[@knighthawk86855]

@@dkupy100 yep had me stumped for a day. Never have I ever seen that before in my 40 years of small engines..... And I've had it twice on the 8.75 series briggs.

[@Turningwrenches85]

Love the simple tricks and tips especially diagnosis of a bad coil.

[@markk3652]

I've used the gas cap trick before. Neighbor had his tractor quit on him in the middle of mowing. I pulled the cap, found the vent hole crusted over with dirt. I grabbed a drill bit that was a size or two bigger than the factory hole in the cap, and twisted it in with my fingers, effectively enlarging the hole. Tractor ran great then, and the neighbor treated me like I was a genius after that!

[@dazeofmylife]

Sir, you are a real educator. If I watch every one of your videos, do you offer an Associates Degree in Small Engine Repair or a Certificate...because you should be teaching at a High School or Community College. You are a natural teacher. Glad I found you!

[@ryanhendricks7038]

I was just thinking that I’ve learned more by watching 3 of his videos than I learned in two years of auto tech in high school. lol

[@stewartbruce8902]

T bone excellent tutorial, and you have the quality of a gifted teacher for us students in the you tube classroom,. I am grateful for your service. Thank you, and all the best from New Rochelle N.Y.

[@Mrs.T-bone]

Thank you for your kind words 😊

[@stewartbruce8902]

@@Mrs.T-bone Thanks for your reply T-bone, and keep those video,s coming.

[@robertodebeers2551]

Excellent presentation. Really like how you got right to the point right away.

[@robcole332]

Great video. I was just sitting here watching “Young Riders” and the head guys name is T-Bone lol.

[@rauljr9869]

Invaluable advice for sharing your tips with us, much appreciated my friend! Keep them coming as we prepare for spring.

[@MaximumPitBull]

T-Bone, I really like this method.

[@Tsers87]

Explains it in layman’s terms Crystal clear

[@Points365]

The kind of small engine focused channel others strive to be! To the point with useful info… You even throws in a few useful tips and tricks along the way. Hopefully the free advice comes back to you 10 fold buddy, you help out a lot of people with these videos.

[@Mrs.T-bone]

Thank you for your kind words!

[@rewphixer]

Since I just said it out loud Ill make sure I say it to you. THANKS DUDE!

[@bronsonblacksr]

Thank you very much. You have saved me over $600.00 today.

[@RaleysSmallEngines]

Awesome!!! Glad it helped!! Great job my friend.

[@robertmailhos8159]

Great idea to check out the coil on any small engines

[@Challenges01826]

Best advice and tips on coils. Helped me a ton. Now of to test mine

[@RaleysSmallEngines]

Awesome

[@doninmichigan]

Great, straight to the point, practical info. 👍

[@RaleysSmallEngines]

Thank you

[@red00dog47]

Good tips sir. Half of knowledge is knowing where to look.

[@populationentertainment460]

Straight to the Point. Love it !

[@46GarageUSA]

Awesome the way you explain it for beginners like me. Thank You

[@angryres6632]

Happy days, thanks, you sorted out my problem!

[@williamdertinger4434]

You are a terrific teacher

[@billypirtle1443]

Everything you said on here yes. But you pull the recoil cover off and see all that rust on the flywheel you have to clean off the flywheel and take the coil off and clean it and where it mounts at also if no spark then replace the coil all these years I been working on them 60 % of the time that's what it was rust on every thing. I been doing this for 45 years now fixing to retire from small engine repair.

[@SamJ6131]

That's what I like... common sense!

[@waynestefinashen239]

Excellent video on easy testing but do not throw out that coil yet especially if it has a spark plug boot like the Honda one in the video or those that are metal shielded because they have a built in resistor that may fail. I believe these style spark plug boots are supposed to have 5K ohms resistance. On three cases over 9 years we have found them to have 10K+ ohms resistance which created the no spark issue. A simple spark plug boot replacement and away we go, great spark at a cheap part cost vs replacing the entire coil.

[@Rein_Ciarfella]

Good one, Pops! I’ll save $ any way I can! 🔧👍

[@kenk3102]

...great tip T-Bone.....keep the DIY videos coming!... 🙂

[@tinkeringtaylor3053]

Great tip T-Bone, excellent when you put these videos out 👍

[@RayofallTrades]

Well done T-bone!

[@brandonparker1371]

Thank you so much sir I really appreciate you

[@ryanhendricks7038]

You put out some great videos! Thank you!

[@STTC]

Tooooo easy 🤣🤣🤣, another great tip for diagnosing brother.

[@pitbull4029]

Your tips ,advice and videos really help out.

[@ahmedm6041]

Great informative video indeed! Thanks.

[@thepearse-moores148]

Fantastic. Straight to the point, so helpfull thank you

[@mr1pearl]

First Ha !!! Great tip sir thanks !

[@RaleysSmallEngines]

Lol Too Funny. Thanks my friend.

[@Techead100]

Great video 🎉

[@DarkWizardPrince]

I like your Karl Slingblade picture. I love that movie!

[@deancarder5829]

Very helpful, informative video, T-Bone. Thanks!.

[@georgiabandit1321]

Awesome thanks for video. 👍

[@johnanthony2545]

Great vid. Like the screw driver trick. I rarely have a new spark plug laying around. Those are as needed for me.

[@reyreyna1068]

Hola great video Sir! Simple to test! 👍👍

[@Jonathansmowing]

Thanks for the free tips and tricks. To pay you back, you have a new subscriber!

[@Jonathansmowing]

Oh, and I'm going to share this video with a lawn care facebook group that people are always asking engine diagnosis questions

[@Mrs.T-bone]

Thank you!

[@Pete.Ty1]

👍👍👍Thanks Tbone

[@anthonynagle]

Brilliant, thanks

[@francislang5075]

great tips

[@beanolatte2682]

Great tips T--bone!!

[@RaleysSmallEngines]

Thank you

[@mikebradford7780]

I've also had a coil that would fire out in the open but would not have strong enough spark under compression to run an engine.

[@davidlang576]

Good advice!

[@crisprtalk6963]

The presence or absence of spark is not always 100% for diagnosis ...example, a coil may be good enough to produce spark when cold but when engine heats up and coil heats up it may not. I saw this recently on a mower. Just seeing the spark on a cold coil is not always conclusive.

[@Rein_Ciarfella]

That’s a really good point - for coils with rust jacking starting to separate the plates.

[@randymanuelawiebe7830]

Tru my mower starts off till it gets hot than it starts missing

[@Big_Johns]

Nice tips there T-Bone, thanks for always putting out some good stuff brother. 🙂👍 Tell Mrs T-Bone we said hey. 👋

[@stormman8393]

TBone, youre a ripper. New subscriber, thanks mate.

[@kuauhtliguerrier9036]

Good video sr , what about in a coil of Rzr Polaris with two cilinder I don't understand the wires , not the same as the one You show, thanks a lot

[@PaulMcGinnis-e4f]

Thanks for the great advice.

[@brandontimblin]

Will your engine still run with that wire disconnected from the coil? Thanks

[@RobBastien]

Hey, thanks buddy, I think I may have a coil issue.

[@richardholappajr.6184]

Great tips, thank you!

[@edreynolds3745]

Really good info, Thanks. !!!

[@fayiznalu8411]

How many hours before I need to adjust the rockers on my generator (Troy build 5000 watts)? Thanks 🙏

[@RaleysSmallEngines]

That would depend on how much it is used. I would think every 100 hours ish. You can look up your particular engine on Briggs webesite or Manuals Lib website. I use Manuals Lib a lot.

[@fayiznalu8411]

@@RaleysSmallEngines Thank you for your reply and advice. Much appreciated.

[@beegekhaos3171]

If ive got spark, but it's weak spark, with a new plug. That means one thing - coil is on its way out, correct?

[@mikecrosby8806]

Hey T-Bone, I have a Hustler zero turn. I have no spark when checking the spark plug while connected to the wire, when I disconnect the kill wire, I get spark. When I do the screwdriver trick I get spark with or without the kill wire attached and the motor will fire both ways. My issue is the motor will run for 15-20 minutes and will die. I have to wait for an hour before it will start again. Any ideas?

[@davidlaws1438]

I have a question sir, I have a troy bilt 1998 18 horse, B&S the model number/ code is not on the OHV cover. Any idea where in the world it would be? Thanks 😊

[@Mrs.T-bone]

Are the letters OHV upside down? If so the code is on the bottom and the cover has been put on upside down.

[@serpentrae]

hay T-bone i have a john deer riding mower that will not turn over at all when i turn the key do you have a video for that problem thanys man over and out

[@AlChafeMYBACKSTEP]

thats some great advice there n new here from jack

[@slikballa]

Great vid

[@annasoderlund5924]

Simpel and easy from a mechanize 68 years. God wideo.

[@philliphall5198]

Thank You’ll 😊

[@mrodriguez5259]

Hay otros momentos en que hay chispa y a veces no ,asi que no te detengas en este video ,has la pruba con el multímetro 😊

[@lesteralderson1304]

Can you help, kohler 7000 idles perfectly.When load is put on engine the RPM drops.

[@wilburcollins8342]

Thanks

[@wesleyhathcoat1271]

I'm having trouble I can't remember the name of the brake clearer that you use? Could you let me know

[@Mrs.T-bone]

Wearever is the brand we use.

[@edgualdino628]

Hello what coil would you recommend factory oem or cheap 25dollar Chinese coil

[@adnacraigo6590]

Thanks.

[@wsbill14224]

Keep the terms straight. An ignition module contains a MOSFET which is a high current transistor that fires the spark plug like points once did. It doesn't contain the ignition coil. Both systems use a coil.

[@LarryHartman-o2b]

Thank you

[@pltmann]

I have an old Solo (1975) chainsaw. It has points and no spark. I checked it out and the coil seems to be grounding out the points. With the coil mounted I have continuity on both sides of the points with the points open. I isolated the switch and it's working. I think the coil is shorted to ground, because when I remove the coil and then check the points they work fine and then put it on again, the points are grounded again. Am I missing something, or is my coil bad?

[@jeanlawson9133]

My dad got me so many times ,, hold this Son... AIN'T IT JUST AIN'T IT 😜 lols.... I must have been a bit slow,, but growing up around Ol Pops... Scotty got smarter...😎

[@RaleysSmallEngines]

🤣

[@derpherpp3]

i was doing AI voice of Authur morgan while watching your video and you two sounds a bit similar. hes from Red Dead Redemtion 2

[@matersworkshop6123]

That's the easiest way to check the coil for sure. I didn't know I worked with you

[@kendexter]

The oldest and most common test yes. just remember electronic pickup coils can burn without resistance as a pug when pulling

[@aurthorthing7403]

I thought you were supposed to get your cousin to hold the spark plug wire while you pull the string?

[@RaleysSmallEngines]

🤣 🤣 🤣

[@jeffshackelford5662]

Seems like it could be the spark plug wire too.

[@nivaldodominguez2722]

Hello I got a tractor is a John Deere is got spark and gas but it won’t start what could it be I really appreciate your help thanks

[@larrycardosi2900]

Air

[@carlcannedy2669]

What would cause a warm echo pb 755st blower did

[@steverose3318]

Take the sparkplug out ... stick it in the hole where the gas goes, and try to start it.

[@mikerichards6311]

👍

[@glennmckinley3058]

I find a multi meter is useless on a modern coil. It can prove it's bad but can't prove it's good.

[@Abc-kn5wj]

My friend dropped off his Dr brush mower it's got a 13 horsepower Intex single cylinder I've clean carburetors my whole life I've worked on this before for 5 years anyways he says you know it won't start cleaning the carburetor put it back on put a new spark plug in the rc12yc. I can get it running 5 seconds 6 seconds shuts off I got a spark plug tester initially I didn't see any spark I move the wire on the coil itself and now I got spark running into the spark plug tester and the engine runs for 20 seconds sometimes and then it dies I see spark the whole time and it dies. I know you're going to say well dummy it's got to be the wire going into the coils because if initially you didn't see spark and then you did that must be the problem. When it's running I see the spark light up the tester the whole time and it dies...so my prob is???

[@RaleysSmallEngines]

1st remove air cleaner. Run it until it dies and won't start. Shoot flammable brake cleaner into carb. Will it start? If so fuel issue if not fire issue.

[@Abc-kn5wj]

Gas is not an issue carburetor spotless.

[@Mrs.T-bone]

What about before the carb? Fuel line, fuel filter, fuel pump, trash in tank, fuel tank lid issues. If it's not a fire issue and the carb is clean work back from there.

[@jimmymullins11]

Hey I have a 240 John Deere I put a new battery in it and the battery is dead why ??

[@jimmymullins11]

It's a 20 horse Kohler engine

[@bangsteellongrangeshooting3413]

You're a GIANT among dwarfs as far as technical knowledge and teaching. You simply have the best small engine channel on KZbin. Period. Dot. :) I really like Steve from Canada who likes beer (who doesn't) and being a dude I'm all about watching the cleavage chick (of course)... but for raw, unadulterated knowledge, you're the very best. :) Keep up the excellent work! 😎

[@RaleysSmallEngines]

Wow, thank you!!

[@jfgrovier2738]

What if you have spark either way

[@CharlieUnruh]

What you do is just turn the motor over and grab it with your hand you’ll find out fast if it work

[@erniemoore2365]

Good be a bad ground, coil to motor

[@greavous93]

What is the secret?

[@martymesser8180]

I have a 425 water cool John deer mower. The left side has no fire. I got a new coil and spark plug still no fire. The wires look ok. What do I look for now?

[@stevemccull9699]

Look for ignition control module

[@mgtowlevel5293]

These mowers have CDI. It's not just about the coil.