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whats the part part number and where do you get the tool to remove the round pin's from the connecter and where would i get replacment pins. I have learned so much from your TH-cam Channel videos to me is absolutely priceless! THANK YOU!
Out of the blue, my Brigs dropped a cylinder. Must be a shot coil right? Resistance was a bit low so I replaced the coil. No fix and now the "good" cylinder is acting up. Thanks Taryl for pointing me at the diode pack. Never thought of it. But knowing that I always enjoy your videos, I went looking and there you were with a very clear diagnosis. I did not find a reference to the diodes on any of the other small engine channels I checked. Thanks much!
I subbed because of this video. I've got a mower with a Briggs 20hp v-twin & to cut a long story short my issue was the diodes in the kill wire. Ordered some diodes online, made up a new kill wire & now mower is running like a dream. Thanks very much for making this video. Kind Regards from Ireland👍🏼
First time I read about those diodes! I probably lost two weekends on this!!!!! Now it’s got a rebuilt carb, new spark plugs, re-adjusted valve push rods, new battery, etc.... but... engine would not start even though I could see spark (I don’t have the right tool, so checking for spark with the plug out of the head). Glad you made this video! Very glad I found it too! :)
Thank you for this very well thought out and hands on demonstration video. I learned a lot from it. Never knew that these engines used diodes in the ignition system!
After improperly wiring my new solenoid I fried some ground wires (2004 Cub Cadet ZRT 50 w Briggs and Stratton 22HP Intek). I pulled my main wiring harness and repaired/replaced damaged wires but mower would only crank without starting. After a week of checking switches, fuses, coils, spark plugs, etc. and killing battery trying I finally caught this video. Taryl nailed it. THANK YOU TARYL!!!! I can mow until I get the kill wires fixed. You're a gentleman and a scholar, I owe you a 6 pack of Hamm's. P.S.-NICE RIP!
I know this video is 3 years old but it just helped me fix my Ferris mower with 28hp vanguard. It was a bad diode! Saved me so much time. I had been at it for 2.5 hours before I turned to TH-cam.
Thanks Daryl, been working on mowers for many years and didn’t know this. Your the man. You’ve saved me hundreds of dollars in repairs to my mowers,thanks again.
*** SPARK TESTER NOTE - See Video: 13:11 I bought these exact spark testers (2), and while they work great, they are poorly made since the black heat shrink does not hold the glass tube tight, and that flashing element will soon break free. I secured mine with super glue. At 13:11, I see you secured yours with silicon, and that's a great fix also, probably better. I noticed over the past 10 years or so, everything I buy needs some little clever fix to keep it from breaking. International markets (Chinese/foreign) make things cheap for competitive reasons, which means they are poorly made, but the alert buyer will benefit from cheaper price by examining the product, and making it better! Thanks For Thinking! -- Mr Brown.
Hi Taryl. Greetings from England. You're a good teacher ! I especially liked the Diode= Checkvalve analogy describing an electronic component in Mechanics terms. Very Good. And thoroughly covering the repair description makes it clear. Well Done..
Had this today....on a John Deere.... I didn't know there were those two diodes in the Kill system....but I noticed someone had removed "something" in the wiring.... Now...alles klaar! Thanks Taryl...you nailed it for me.
Thanks for this video. A little story here. I have worked on engines all my life well about 55 years or more. Today was the first time I have trouble with a diode someone gave me a zero turn with a 16hp B & S twin he could not fix. Long story short he replaced the kill wire with one without diodes and this helped me fix this old mower. Thanks
Thank you very much for your assistance in my briggs & Stratton V twin engine that has two Diles in it one day old was bad I traced it down myself but I also had a friend of mine check the diode‘s with a tester. Now the engine is doing it again it’s it’s shutting off while running and I think it’s somethings getting hot causing it to shut down. So after five or 10 minutes of waiting for it to cool off I can fire it back up again. Thank you and I’ll be keeping you on here. Thank you and God bless you and everyone in your family and everyone that works for you.
I subscribe to a lot of different channels but this channel has the best videos as far as I'm concerned y'all put allot of thought and work into the subject matter. As always thanks for all your work and effort
Taryl, you’re a genius. Thanks for sharing all your knowledge with us. We always learn something new every video you guys produce. Thank you for your service...👍👍👍
your channel has helped me so much, maintaining my own yard tractors, and keeping them running good, thank you. camera man is a sniper, knows where to point make it easy for me to understand, great job group.
Great Video Guys. I could have use that one a few years ago when I run into my first burnt Diode. Drove me crazy. I knew the Diodes were there just didn't understand how they functioned in the circuit, but knew what diodes did so with some study and some meter work finally figured it out. That's when I knew I needed two spark testers for the Briggs Balance test. Rock On
Just to clarify, a diode can fail either shorted, where it will read both directions, or it will fail open, meaning you would get no reading in either direction. No offense, taryl, just wanted to add this. Great video, brother.
Taryl thanks! You helped me run to at least get the grass cut. Then, I watched the video a few more times to fix the diode issue on the weekend. TIP: If you can't find or don't have a terminal end tool you can just use a small screwdriver to bend two tabs all the way into the round part of the plug and pull the wire out.
Great video and good explanation of how a diode works. i really enjoy watching your videos on how to fix problems with small engines, keep up the great work.
New subscriber here. I think you have solved my problem with my Briggs & Stratton Twin cylinder. Thanks. I guess many people know how to fix things, but there are few who can explain it to others. Good job on the explaining.
I just bought a used snapper and it’s running intermittently on one cylinder. I just bought two new coils 😫. Hopefully it’s my problem. But if it isn’t I now know to check them stupid diodes. The previous owner had problems with the same thing costing two different shop bills at a cool 2800$. The one coil would shut it off if unplugged. The cap was so rusty I can’t believe the shop missed it and didn’t replace it. I replaced the cap and still running on one cylinder. Glad you explained the problems. I have a plan B now
YES! I spent some time today figuring out what you just explained on my 1996 20hp Briggs IC V-twin I'm resurrecting. Thanks for reminding me that the gad-frappin' solenoid'll starve it for fuel even if the kill wires are removed. I had forgotten that. I learned (and your video confirmed) that the bands on the diodes must be on the *coil* side of the kill wire harness, unlike another TH-camr who had them the other way around in his schematic diagram, but came up with a good electrical solution in lieu of new diodes involving a DPDT switch with the coils on one end (electrically separate coil kill circuits controlled mechanically by a single switch) and the other ends of the switch wired together to the single harness kill wire in case your anti-after fire solenoid is buggered open, modded, or deleted. That way all your safety switches still work. A quick lookup says they're 1N4007 1000V 1watt diodes for anyone wanting to make their own harness. You explained their function better than you had to and the 'improper' wiring examples and their associated symptoms really drove the point home. Nice work, man!
Great video Taryl! I've been working on small engines since I was a teenager and I did not know this. I had an old Briggs opposed twin that was running on one cylinder and I bet this was the problem all along!
The opposed twin uses a single coil with two wires going to the plugs. It uses “wasted spark”, which means it fires both cylinders at the same time, one at TDC on the compression stroke, while the other cylinder is on the exhaust stroke.
Hey that there's the Brothers Gross at the end! They're rockers! Loved the video. Always wondered if the engine would still run with the kill wire removed, so I would know if the coil was bad, or something was cutting off spark (like one of those pesky safety switches). Thanks for the valuable troubleshooting tip!
@Taryl Fixes All Is it true that if the diode failed that you should replace the coils because the coils likely caused the diode failure? And are the knock off coils at half the cost of OEM worth buying, or should one only purchase OEM coils? I'm dealing with this currently on a 2008 Intek 24hp Husqvarna tractor and not sure if I should replace just the diodes, or replace the coils as well.
Good video on the diode. I have a older Snapper riding mower with a Briggs 14.5 hp that wouldn't charge the battery or turn on the lights. I traced it down to a diode in the wire that comes out of the alternator. Ordered a diode, it should fix my problem.
Another great video. I wish you would do like a behind-the-scenes video on the camera equipment you use, the costumes, the real people behind the costumes, and how do you come up with the storylines every week. I think all your fans would really enjoy learning more about how y'all do it. Have a great day Taryl Fixes All.
Gene Friedman Are you serious??.HAHA!!.No,not really even though I've seen a few people roaming the streets with somewhat similar"dental issues".HAHA!!.
Taryl Fixes All is above and beyond any other mechanics videos not just because his knowledge is endless but also because he makes it fun. Just one question do the twin cylinders engines like this one have the compression release or are they only on the single cylinder models?
Grandson (13) and I spent hours this winter Michigan) troubleshooting this problem. Fixed it. Then I disconnected the seat safety and did not realize that this switch was a grounding connector. WHAT? Yep. Try to jump the connector and it won't start.Hours and Hours finding this out. SO the best video ever!!
Thanks Taryl. I think that I have a bad diode on my B&S twin. Being an Ham Radio Operator I know how a diodes work. I accidently knocked one of the spark plug wires off it and it would not run at all but would run when it was replaced. Keep up the great videos.
You are one class act. I can be so down try to fix my mower and you have a way of sending me in the right direction and make me laugh at the same time. Keep it up you crazy brother. 😂
> a coil either works or it doesn't That's not necessarily true. I have come across coils that will break down when they get hot and either quit working altogether or they're hit-and-miss. > if these diodes are bad, I get a reading both ways Also, not necessarily true. Diodes can short - meaning that you get a reading both ways - or they can open - meaning that you don't get a reading in either direction. In either case, they would be defective. As for the video... wow. I must admit it was hilarious! I feel the need to watch more of your antics... I mean, informational videos :)
Yep, coils will sometimes crap out when they get hot, let it cool down, and it runs again. And sometimes are intermittent, but either way, it is time for a new coil.
Thanks for the great video. I live in Brazil and I have a lawnmower with this engine. Here it is difficult to find a mechanic to repair. My engine has a problem that seems to be governor. When I start the engine, it is constantly accelerating and decelerating, this happens at idle, or full throttle. Could you tell me what might be the problem?
I have a DR chipper that I got for free that has the 16 hp Vanguard twin cyl. Found out one coil was bad and part of the insulation on the kill wire was gone and it was grounding out. I went ahead and ordered two new coils and a kill wire and installed them. It started with starting fluid but did not stay running. So I tore the carbetrator apart and found it full of gunk and had a stuck needle valve. I now have the carbetrator apart and waiting for a new needle valve. Once that comes in everything will be cleaned and put back together and will move on to the next issue. My plan is to fix it a little at a time for a winter project then sell it.
The king of lawn mower repairs wondering if you have a racing lawn mower or a very special mower u been holding on to but you should show us how to build a racing lawn mower i like all your viedos keep it up bud
That's pretty cool , so if I had an intermediate circuit , that lost power while in use , I could hook a manual power to it through a diode , cause I can't have two hots connected ...am I thinking right ? No... what happens when the intermediate power jiggles back on ? ... thinking outloud & outside the box ..🤔
DIODE SPECIFICATIONS Those diodes look like 1N4007 and are rated at 1 AMP / 1000 Volts They can be found for about $2 for 100, enough to pass on to your children! (insert laugh track). - - - Very cheap part. Be AWARE when you replace them, they MUST be oriented correctly. One end of the Diode has a ring around it. Keep them oriented properly when you replace them. These little guys basically isolate the coils from each other, as Taryl so masterfully explains. Keep up the great work! And... Thanks for Thinking!
Glad I saw this. I have a dead cylinder in my riding mower. Mice at through my kill switch wire and I resoldered it. But still not starting. Ordered the new wire and hoping that does the trick. If so, the new coil I orderec along with it will go back once I receive it.
I have a question hope you can help. My 24 hp Briggs Endurance Engine on my Husqvarna z254 suddenly shut down when I was mowing. I had change the oil the day before and was running fine. I watched the video you posted on TH-cam on the diodes and so anyway I pulled the spark plugs off and checked both and they have good spark on each so maybe a possibility of the gas filter? Please help if you can answer this problem. Many thanks, Mike
I do not understand what the Diodes are preventing from flowing . Diodes are on the ground circuit so the ground attached to coils works to cause a direct short circuit of the coils ,correct? When ignition is keyed off it connects the coils to ground .Are the diodes necessary due to there being more than one coil? On single coil machines there are no diodes on the coil circuit . I am guessing the two coils hooked to each other in parallell could possibly send stray current from one coil to the other without Diode in line !
Thanks for the video. The following is somewhat off-topic. Will a 20 hp briggs V twin coil fit a Briggs opposed twin? Are the flywheels the same diameter? Ebay has a new v twin coil for $20 and the opposed twin coil for about $60. My 19.5 hp opposed twin Briggs starts fine, has good power but pops, misfires and surges at all rpm especially at lower rpm. Choke use doesn't help the way it runs. Recent Walbro carb clean with new fuel pump diaphragm, new fuel filter, fuel tank clean, flywheel key is good, new spark plugs with both sparking, re-gapped coil, no intake leaks. I have not increased the diameter of the fixed low speed jet. I looked through a lot of the 284 comments but did not find one like this.
Forget the above - I just realized my confusion. Ebay has an opposed twin coil listed as for a V twin. Of course the V twin has TWO coils! duh! Since an opposed twin has one coil I guess it has no diodes.
Can you tell me is there different size batteries for riders I have an old Roper Onan battery terminals are massive will a regular battery work thanks great video bro
I always change out the kill switch to a double pole/double throw switch (DPDT) and get rid of the whole diode situation all together. One less thing to worry about
Hey Taryl, what's the nomenclature on those Diodes for the Briggs? I can get em dirt cheap and since I build printed circuit boards for a living...maybe I can help you by telling you what company makes some that wont go bad ever again cause...that sounds like they fail way too early, too often! Theres like 5 companies that make em...maybe set u up with automotive moisture resistant ones that won't conk out and just keep rocking!
@tarylfixesall, I’ve watched through all your related BS 20Hp Intel v-twin engine videos… luv the content you produce to help folks! Question pls… my JD L120 with above described engine will run / cut, do all, but within a completely random amount of time, independent of outside temperature, the engine will lose 1 cylinder. At times you catch an undeniable whiff of un-burnt fuel when continuing to mow. Do those symptoms sound like any past troubleshooting experiences you can recall? Thank you.
So on the last part of the clip, when one diode was removed - the longer wire WITH the diode did not give spark, while the shorter wire WITHOUT the diode did give spark?I thought it should have been the opposite.If someone can explain i'll appreciate it.Thanks, Moses
Gene Friedman Thank you very much. I understood from the beginning that the coil WITH the functioning diode should work and give spark, and the one without/non working diode should not give spark.That why I don't understand why in the clip it's the opposite - the short wire without diode did have spark, while the longer wire without diode didn't have spark. If you could please explain i'll appreciate that.Thank you again, Moses
Gene Friedman Thanks again.1. So if the diode was missing on the longer wire, instead on the shorter wire (as shown by Taryl) - in this case we would get spark on the other side of the engine?2. Also, in the part where he shows the blue wire he made without any diodes - he didn't connect it to the ignition, but it still killed the engine, why is that?Thanks again, Moses
mosheg77 I had trouble understanding it too. I understood from Taryls video that it needed those diodes but couldn't figure out what was happening with them. Think I got it now and glad you asked the question.
so assuming my diodes are bad and I'm only running on one cylinder. by unm plugging the kill switch and opting not to use it. will it then run both cylinders? as you can tell I know nothing about this. but, I am learning thanks to your vids!
I have a John steer lawn tractor lx255 with a kuler motor, has spark, shoot some either in the carb but still won't start, also the mechanical fuel pump doesn't pump, so I think the cam shaft is messed up, what are your thoughts, oh also the antibackfire selinoid doesn't work, but it does during test with a battery, so me thinks the John steer is really messed up.
Great video, i almost got mine fixed. Do you or anyone know if i can run the kill switch wire directly to the ignition?(5 pin). The wire dead ends to nowhere.
Hey. I just bought a craftsman yt4000 with a 24 hp twin. Thing runs great for about 20 min then dies. As soon as it dies, I check for spark on both sides with a inline spark checker. Both side have good spark. Also replaced the solenoid in the float bowl. The guys before me said he just had the carb cleaned. I wait 10 minutes, and it starts right back up???
Actually a diode will conduct in both directions. The band signifies the negative side of the diode... positive current will not flow through the negative side, however negative current will. That’s why diodes are used in a bridge circuit to rectify AC voltage into DC. For lawnmower use, Taryls explanation is fine.
Have 24 hp Briggs motor won't start without spray start. Put on new carb, new fuel lines,new plugs,checked coils both sparking, adjusted valves. Running out of things to check, fuel cap?carb shut off? Oh replaced fuel filter and pump. Could use some help
If the switch is the on position, not providing a ground to the kill wire, then why is connecting both kill terminals together killing spark? Are they canceling each other out somehow?
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whats the part part number and where do you get the tool to remove the round pin's from the connecter and where would i get replacment pins. I have learned so much from your TH-cam Channel videos to me is absolutely priceless! THANK YOU!
@@dannyg9864 it's called a Delphi pin tool
Out of the blue, my Brigs dropped a cylinder. Must be a shot coil right? Resistance was a bit low so I replaced the coil. No fix and now the "good" cylinder is acting up. Thanks Taryl for pointing me at the diode pack. Never thought of it. But knowing that I always enjoy your videos, I went looking and there you were with a very clear diagnosis. I did not find a reference to the diodes on any of the other small engine channels I checked. Thanks much!
By far the most informative channel for small engine repair and general maintenance! Keep it up fellers!
I subbed because of this video. I've got a mower with a Briggs 20hp v-twin & to cut a long story short my issue was the diodes in the kill wire. Ordered some diodes online, made up a new kill wire & now mower is running like a dream. Thanks very much for making this video. Kind Regards from Ireland👍🏼
Taryl thank you for taking your time to show us numsculls how to get all our junk lawnmowers running. I appreciate you it's all good. Be safe.
1N4001 diodes. You can get them online for 20 cents each. Stupid engineer setup.....thanks for going thru it, Taryl!
First time I read about those diodes! I probably lost two weekends on this!!!!!
Now it’s got a rebuilt carb, new spark plugs, re-adjusted valve push rods, new battery, etc.... but... engine would not start even though I could see spark (I don’t have the right tool, so checking for spark with the plug out of the head).
Glad you made this video! Very glad I found it too! :)
Thank you for this very well thought out and hands on demonstration video. I learned a lot from it. Never knew that these engines used diodes in the ignition system!
After improperly wiring my new solenoid I fried some ground wires (2004 Cub Cadet ZRT 50 w Briggs and Stratton 22HP Intek). I pulled my main wiring harness and repaired/replaced damaged wires but mower would only crank without starting. After a week of checking switches, fuses, coils, spark plugs, etc. and killing battery trying I finally caught this video. Taryl nailed it.
THANK YOU TARYL!!!! I can mow until I get the kill wires fixed. You're a gentleman and a scholar, I owe you a 6 pack of Hamm's.
P.S.-NICE RIP!
I’m a mechanical engineer & cant stop watching this series, it’s actually brilliant
I know this video is 3 years old but it just helped me fix my Ferris mower with 28hp vanguard. It was a bad diode! Saved me so much time. I had been at it for 2.5 hours before I turned to TH-cam.
Thanks Daryl, been working on mowers for many years and didn’t know this. Your the man. You’ve saved me hundreds of dollars in repairs to my mowers,thanks again.
*** SPARK TESTER NOTE - See Video: 13:11
I bought these exact spark testers (2), and while they work great, they are poorly made since
the black heat shrink does not hold the glass tube tight, and that flashing element will
soon break free.
I secured mine with super glue.
At 13:11, I see you secured yours with silicon, and that's a great fix also, probably better.
I noticed over the past 10 years or so, everything I buy needs some little clever fix to keep
it from breaking. International markets (Chinese/foreign) make things cheap for
competitive reasons, which means they are poorly made, but the alert buyer will benefit
from cheaper price by examining the product, and making it better!
Thanks For Thinking!
-- Mr Brown.
Hi Taryl. Greetings from England. You're a good teacher ! I especially liked the Diode= Checkvalve analogy describing an electronic component in Mechanics terms. Very Good. And thoroughly covering the repair description makes it clear. Well Done..
Had this today....on a John Deere.... I didn't know there were those two diodes in the Kill system....but I noticed someone had removed "something" in the wiring....
Now...alles klaar! Thanks Taryl...you nailed it for me.
Thanks for this video. A little story here. I have worked on engines all my life well about 55 years or more. Today was the first time I have trouble with a diode someone gave me a zero turn with a 16hp B & S twin he could not fix. Long story short he replaced the kill wire with one without diodes and this helped me fix this old mower. Thanks
Great video taryl!!!!! This one was very informative!! I like how you took time to make the home made wiring to show what happens with no diodes
Sometimes after watching you perform your genius work, my head hurts. You are the best.
Thank you very much for your assistance in my briggs & Stratton V twin engine that has two Diles in it one day old was bad I traced it down myself but I also had a friend of mine check the diode‘s with a tester. Now the engine is doing it again it’s it’s shutting off while running and I think it’s somethings getting hot causing it to shut down. So after five or 10 minutes of waiting for it to cool off I can fire it back up again. Thank you and I’ll be keeping you on here. Thank you and God bless you and everyone in your family and everyone that works for you.
6 years later helped me figure out my problem on a new motor! Thank you
Taryl you are the best. Whenever i need to fix my mowers i look up your channel. Thanks Rocker!!!
I subscribe to a lot of different channels but this channel has the best videos as far as I'm concerned y'all put allot of thought and work into the subject matter. As always thanks for all your work and effort
Thanks so much for
Que tipo de diodos son los que lleva el motor briggs stratton 20hp, en los cables que van hacia las bobinas
Taryl, you’re a genius. Thanks for sharing all your knowledge with us. We always learn something new every video you guys produce. Thank you for your service...👍👍👍
your channel has helped me so much, maintaining my own yard tractors, and keeping them running good, thank you.
camera man is a sniper, knows where to point make it easy for me to understand, great job group.
Just found u thanks so far I’ve been checking and you are the first to mention this problem they have thanks 🙏
I've got a 16 hp Vanguard. I'll definitely keep this in mind. Thank you Taryl.
Great Video Guys. I could have use that one a few years ago when I run into my first burnt Diode. Drove me crazy. I knew the Diodes were there just didn't understand how they functioned in the circuit, but knew what diodes did so with some study and some meter work finally figured it out. That's when I knew I needed two spark testers for the Briggs Balance test. Rock On
Chased down wiring for a half hour on my mower so pumped I found this you came in clutch.
Taryl,You are alright in my book!! Thanks for the pointers. I binge watch your videos!!
Just to clarify, a diode can fail either shorted, where it will read both directions, or it will fail open, meaning you would get no reading in either direction. No offense, taryl, just wanted to add this. Great video, brother.
Top tip about the diodes and how to test them, Cheers Taryl.
Pete, Lincolnshire UK.
again,somethings a lot of folks dont know thanks Taryl
Oh yeah Tayrl and KREW,HAPPY MOTHERS DAY!!.
Thanks, I like the idea to. Just unhook the grounds. And gave me the thought to check if both sides are firing.
Taryl thanks! You helped me run to at least get the grass cut. Then, I watched the video a few more times to fix the diode issue on the weekend. TIP: If you can't find or don't have a terminal end tool you can just use a small screwdriver to bend two tabs all the way into the round part of the plug and pull the wire out.
Great video and good explanation of how a diode works. i really enjoy watching your videos on how to fix problems with small engines, keep up the great work.
New subscriber here. I think you have solved my problem with my Briggs & Stratton Twin cylinder. Thanks. I guess many people know how to fix things, but there are few who can explain it to others. Good job on the explaining.
Very good Information. I was having this same issue when I stumbled up on your video. Thank you.
I just bought a used snapper and it’s running intermittently on one cylinder. I just bought two new coils 😫. Hopefully it’s my problem. But if it isn’t I now know to check them stupid diodes. The previous owner had problems with the same thing costing two different shop bills at a cool 2800$. The one coil would shut it off if unplugged. The cap was so rusty I can’t believe the shop missed it and didn’t replace it. I replaced the cap and still running on one cylinder. Glad you explained the problems. I have a plan B now
YES! I spent some time today figuring out what you just explained on my 1996 20hp Briggs IC V-twin I'm resurrecting.
Thanks for reminding me that the gad-frappin' solenoid'll starve it for fuel even if the kill wires are removed. I had forgotten that.
I learned (and your video confirmed) that the bands on the diodes must be on the *coil* side of the kill wire harness, unlike another TH-camr who had them the other way around in his schematic diagram, but came up with a good electrical solution in lieu of new diodes involving a DPDT switch with the coils on one end (electrically separate coil kill circuits controlled mechanically by a single switch) and the other ends of the switch wired together to the single harness kill wire in case your anti-after fire solenoid is buggered open, modded, or deleted.
That way all your safety switches still work.
A quick lookup says they're 1N4007 1000V 1watt diodes for anyone wanting to make their own harness.
You explained their function better than you had to and the 'improper' wiring examples and their associated symptoms really drove the point home.
Nice work, man!
Great video Taryl! I've been working on small engines since I was a teenager and I did not know this. I had an old Briggs opposed twin that was running on one cylinder and I bet this was the problem all along!
The opposed twin uses a single coil with two wires going to the plugs. It uses “wasted spark”, which means it fires both cylinders at the same time, one at TDC on the compression stroke, while the other cylinder is on the exhaust stroke.
Hm, so maybe I had a bad coil wire.. or a sticking valve
Hey that there's the Brothers Gross at the end! They're rockers! Loved the video. Always wondered if the engine would still run with the kill wire removed, so I would know if the coil was bad, or something was cutting off spark (like one of those pesky safety switches). Thanks for the valuable troubleshooting tip!
@Taryl Fixes All
Is it true that if the diode failed that you should replace the coils because the coils likely caused the diode failure?
And are the knock off coils at half the cost of OEM worth buying, or should one only purchase OEM coils?
I'm dealing with this currently on a 2008 Intek 24hp Husqvarna tractor and not sure if I should replace just the diodes, or replace the coils as well.
A lot more informative than many other serious videos i have see..............hey rocker you ROCK!!
Good job! I'm gonna need to watch it a couple more times to fully grasp it.
Good video on the diode. I have a older Snapper riding mower with a Briggs 14.5 hp that wouldn't charge the battery or turn on the lights. I traced it down to a diode in the wire that comes out of the alternator. Ordered a diode, it should fix my problem.
Another great video. I wish you would do like a behind-the-scenes video on the camera equipment you use, the costumes, the real people behind the costumes, and how do you come up with the storylines every week. I think all your fans would really enjoy learning more about how y'all do it. Have a great day Taryl Fixes All.
Reeses Mill Off-Road Adventure Tayrl has already done that video.If you look back through his archives,you'll see it.
Gene Friedman Are you serious??.HAHA!!.No,not really even though I've seen a few people roaming the streets with somewhat similar"dental issues".HAHA!!.
Taryl Fixes All is above and beyond any other mechanics videos not just because his knowledge is endless but also because he makes it fun.
Just one question do the twin cylinders engines like this one have the compression release or are they only on the single cylinder models?
Grandson (13) and I spent hours this winter Michigan) troubleshooting this problem. Fixed it. Then I disconnected the seat safety and did not realize that this switch was a grounding connector. WHAT? Yep. Try to jump the connector and it won't start.Hours and Hours finding this out. SO the best video ever!!
Thanks Taryl. I think that I have a bad diode on my B&S twin. Being an Ham Radio Operator I know how a diodes work. I accidently knocked one of the spark plug wires off it and it would not run at all but would run when it was replaced. Keep up the great videos.
Sir, you just earned a new subscriber. Thank you!!
You are one class act. I can be so down try to fix my mower and you have a way of sending me in the right direction and make me laugh at the same time. Keep it up you crazy brother. 😂
you could make 2 shut off switches for the coils
> a coil either works or it doesn't
That's not necessarily true. I have come across coils that will break down when they get hot and either quit working altogether or they're hit-and-miss.
> if these diodes are bad, I get a reading both ways
Also, not necessarily true. Diodes can short - meaning that you get a reading both ways - or they can open - meaning that you don't get a reading in either direction. In either case, they would be defective.
As for the video... wow. I must admit it was hilarious! I feel the need to watch more of your antics... I mean, informational videos :)
Yep, coils will sometimes crap out when they get hot, let it cool down, and it runs again. And sometimes are intermittent, but either way, it is time for a new coil.
good video mate. why do I get a huge exhaust backfire as soon as I try to start 20hp v twin briggs, a brand new one at that too with auto choke?
Thanks for the great video. I live in Brazil and I have a lawnmower with this engine. Here it is difficult to find a mechanic to repair. My engine has a problem that seems to be governor. When I start the engine, it is constantly accelerating and decelerating, this happens at idle, or full throttle. Could you tell me what might be the problem?
Thanks Taryl, I like how you take the time to really explain and make learning fun.
I have a DR chipper that I got for free that has the 16 hp Vanguard twin cyl. Found out one coil was bad and part of the insulation on the kill wire was gone and it was grounding out. I went ahead and ordered two new coils and a kill wire and installed them. It started with starting fluid but did not stay running. So I tore the carbetrator apart and found it full of gunk and had a stuck needle valve. I now have the carbetrator apart and waiting for a new needle valve. Once that comes in everything will be cleaned and put back together and will move on to the next issue. My plan is to fix it a little at a time for a winter project then sell it.
The king of lawn mower repairs wondering if you have a racing lawn mower or a very special mower u been holding on to but you should show us how to build a racing lawn mower i like all your viedos keep it up bud
Taryl you are the best! This is exactly what I am dealing with. Thank you man!!!!
Can you show more interaction with old iron engine.enjoy your videos and information on u tube.thanks Tim..
That's pretty cool , so if I had an intermediate circuit , that lost power while in use , I could hook a manual power to it through a diode , cause I can't have two hots connected ...am I thinking right ? No... what happens when the intermediate power jiggles back on ? ... thinking outloud & outside the box ..🤔
DIODE SPECIFICATIONS
Those diodes look like 1N4007 and are rated at 1 AMP / 1000 Volts
They can be found for about $2 for 100, enough to pass on to your children! (insert laugh track).
- - -
Very cheap part. Be AWARE when you replace them, they MUST be oriented correctly.
One end of the Diode has a ring around it. Keep them oriented properly when you replace them.
These little guys basically isolate the coils from each other, as Taryl so masterfully explains.
Keep up the great work!
And...
Thanks for Thinking!
So what end goes where?
Taryl Can you please tell me where and what that terminal release tool is called and where I can get one?
Yeah me too
Thanks!
Glad I saw this. I have a dead cylinder in my riding mower. Mice at through my kill switch wire and I resoldered it. But still not starting. Ordered the new wire and hoping that does the trick. If so, the new coil I orderec along with it will go back once I receive it.
Dude, you are amazing! You made me laugh and taught me a ton at the same time great job!
great video Mr.Taryl, I have the same problem, but I disconnected both wires and I turn the key and nothing, connected one it started
I have a question hope you can help. My 24 hp Briggs Endurance Engine on my Husqvarna z254 suddenly shut down when I was mowing. I had change the oil the day before and was running fine. I watched the video you posted on TH-cam on the diodes and so anyway I pulled the spark plugs off and checked both and they have good spark on each so maybe a possibility of the gas filter? Please help if you can answer this problem. Many thanks, Mike
Your videos are just awesome and funny... thanks for the great tip...I think this fixed the problem.
I do not understand what the Diodes are preventing from flowing . Diodes are on the ground circuit so the ground attached to coils works to cause a direct short circuit of the coils ,correct? When ignition is keyed off it connects the coils to ground .Are the diodes necessary due to there being more than one coil? On single coil machines there are no diodes on the coil circuit . I am guessing the two coils hooked to each other in parallell could possibly send stray current from one coil to the other without Diode in line !
Thanks for the video. The following is somewhat off-topic. Will a 20 hp briggs V twin coil fit a Briggs opposed twin? Are the flywheels the same diameter? Ebay has a new v twin coil for $20 and the opposed twin coil for about $60. My 19.5 hp opposed twin Briggs starts fine, has good power but pops, misfires and surges at all rpm especially at lower rpm. Choke use doesn't help the way it runs. Recent Walbro carb clean with new fuel pump diaphragm, new fuel filter, fuel tank clean, flywheel key is good, new spark plugs with both sparking, re-gapped coil, no intake leaks. I have not increased the diameter of the fixed low speed jet. I looked through a lot of the 284 comments but did not find one like this.
Forget the above - I just realized my confusion. Ebay has an opposed twin coil listed as for a V twin. Of course the V twin has TWO coils! duh! Since an opposed twin has one coil I guess it has no diodes.
A good general diode is the 1N400x (1N4001, 1N4004) range - these are cheaper than dirt and can be found anywhere.
Can you tell me is there different size batteries for riders I have an old Roper Onan battery terminals are massive will a regular battery work thanks great video bro
I always change out the kill switch to a double pole/double throw switch (DPDT) and get rid of the whole diode situation all together. One less thing to worry about
Thanks for the info and the entertainment!
Hey Taryl, what's the nomenclature on those Diodes for the Briggs? I can get em dirt cheap and since I build printed circuit boards for a living...maybe I can help you by telling you what company makes some that wont go bad ever again cause...that sounds like they fail way too early, too often! Theres like 5 companies that make em...maybe set u up with automotive moisture resistant ones that won't conk out and just keep rocking!
drj Westfield Wisconsin if you have D C current why do you need a diode? Thank you for your time
Hey Taryl i got a honda gx 620 vtwin, does it have diodes ? And if so do you have a part number for these diode wire harness
@tarylfixesall, I’ve watched through all your related BS 20Hp Intel v-twin engine videos… luv the content you produce to help folks!
Question pls… my JD L120 with above described engine will run / cut, do all, but within a completely random amount of time, independent of outside temperature, the engine will lose 1 cylinder. At times you catch an undeniable whiff of un-burnt fuel when continuing to mow.
Do those symptoms sound like any past troubleshooting experiences you can recall?
Thank you.
Oh! Jeezzz! You guys are getting crazier but the episode
best explanation on diodes , your the bomb TARYL!!!!!!!!!!!!!!! 1000 likes from me!!!!!!!!!!!!!! I am FULL
The Carbentrator on this V-Tek is the same as mine that I need to replace... But Cannot Find it even from Brake n Scrapm.
I Need Your HELP!!!
Thanks, you are a great Teacher 👨🏫 did you see the mower pic on your google plus? The green one at salvage yard like the international harvester?
So on the last part of the clip, when one diode was removed - the longer wire WITH the diode did not give spark, while the shorter wire WITHOUT the diode did give spark?I thought it should have been the opposite.If someone can explain i'll appreciate it.Thanks, Moses
Gene Friedman Thank you very much. I understood from the beginning that the coil WITH the functioning diode should work and give spark, and the one without/non working diode should not give spark.That why I don't understand why in the clip it's the opposite - the short wire without diode did have spark, while the longer wire without diode didn't have spark. If you could please explain i'll appreciate that.Thank you again, Moses
Gene Friedman Thanks again.1. So if the diode was missing on the longer wire, instead on the shorter wire (as shown by Taryl) - in this case we would get spark on the other side of the engine?2. Also, in the part where he shows the blue wire he made without any diodes - he didn't connect it to the ignition, but it still killed the engine, why is that?Thanks again, Moses
Thank you very much, Gene.
mosheg77 I had trouble understanding it too. I understood from Taryls video that it needed those diodes but couldn't figure out what was happening with them. Think I got it now and glad you asked the question.
so assuming my diodes are bad and I'm only running on one cylinder. by unm plugging the kill switch and opting not to use it. will it then run both cylinders? as you can tell I know nothing about this. but, I am learning thanks to your vids!
I have a John steer lawn tractor lx255 with a kuler motor, has spark, shoot some either in the carb but still won't start, also the mechanical fuel pump doesn't pump, so I think the cam shaft is messed up, what are your thoughts, oh also the antibackfire selinoid doesn't work, but it does during test with a battery, so me thinks the John steer is really messed up.
Great video, i almost got mine fixed. Do you or anyone know if i can run the kill switch wire directly to the ignition?(5 pin). The wire dead ends to nowhere.
Is there a complete coil harness with diodes already installed available?
Hey. I just bought a craftsman yt4000 with a 24 hp twin. Thing runs great for about 20 min then dies. As soon as it dies, I check for spark on both sides with a inline spark checker. Both side have good spark. Also replaced the solenoid in the float bowl. The guys before me said he just had the carb cleaned. I wait 10 minutes, and it starts right back up???
That's great information! Weird problem, but makes sense.
Actually a diode will conduct in both directions. The band signifies the negative side of the diode... positive current will not flow through the negative side, however negative current will. That’s why diodes are used in a bridge circuit to rectify AC voltage into DC. For lawnmower use, Taryls explanation is fine.
Rather than buying the Briggs replacement diode harness do you know what generic diode part number would be a suitable replacement for a bad diode?
1N4001 diodes
Have 24 hp Briggs motor won't start without spray start. Put on new carb, new fuel lines,new plugs,checked coils both sparking, adjusted valves. Running out of things to check, fuel cap?carb shut off? Oh replaced fuel filter and pump. Could use some help
If the switch is the on position, not providing a ground to the kill wire, then why is connecting both kill terminals together killing spark? Are they canceling each other out somehow?
The best turkeyshooter (troubleshooter) on the innerscreen!!!
Good video I have no spark on a cooler engine on both coil s
Great video, good info.
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Thanks Taryl ...for my sunday night infotainment!!
I'm guilty of replacing both coils. And still cant get my mower to start. Replaced fuel pump, carburetor and both coils...also adjusted my valves.