You have that ignate soul of a teacher,Nowadays i can proudly say i know all this by heart.I am a telecommunication technician and understand how these things work very well.I wish i had seen this video 3 or four years ago when the so called mechanics of Miami got me so frustrated that i decided to learn by myself,i feel i live in the outback,what a disaster..I have been through hell and back learning everything about scooters and motorcycles..I have had 28 motorcycles and scooters combined.I am 52..and nowadays when i watch videos of mechanics i can tell right away who is a part changer ,like the ones i ran away from and a real mechanic that makes perfect sense like you..I give you credit,the highest credit for your true knowledge and will to share it with others..You do not need advertizing because you do know what you are doing and saying,and i am very proud of you..Even though this is something i know very well i want to thank you for your time and dedication..If i had met a mechanic like you,i would not know what i know today..Nowadays i love this,but when you depend on yourself to fix your vehicles without knowing these things , like it happened to me.it gets really frustrating,now at the end of the road i feel i have won a battle..I see more than a few thumb downs on this video,and these are probably dudes who are jealous of your high IQ..Disregard these pigs that only think about eating their next meal..These are the dudes who unethically oppose people like you and me ,because we earn our living honestly with transparency and honesty..When you are good,and you are excellent,you can be showing it all,and yet you will become even a stronger magnet to attract great customers to your business,versus the shady dudes whose mechanical practices suck..i do not do this for a living and i have parts and tools most shops here in Miami do not have and thats embarrassing.For years i heard things from shop owners here that are too frustrating to mention publicly..One thing i do wanna say is, many mechanics would tell me that it would be better to buy a new engine than to fix anything in the gear box.I was not sure about that and one day i bought a 12 ton shop press and people laughed at me.Today after 12000 miles of hard riding i can tell you this.i bought all the ball bearings on line,and i rebuilt a gear box on a 150 cc from A to Z,i replaced every bearing by high quality japanese ones and this scooter glides,way much better than when i bought it brand new,totally smooth like a japanese scooter..i even replaced the ones in the swing arm as well as the gears..to make it even better i mix my own gear box oil using a viscosity chart and the results are amazing..but i have said enough and the truth is you are a great representation of what a mechanic should be in this great nation..Very few like you,you do make a difference,thumbs up and the very best for you,i feel sorry for pretentious mediocre part changers who live on scamming and lying to make a living
Thanks you for taking the time to write this. I feel your frustration, I’m glad you learned it on your own. I am happy to help others understand. Thanks for the support 🙏
Thanks! Using this video and some wiring schematics I was able to replace a $271.90 part (32900-05210) (7 wire) with a $7.49 part (5 wire) and get my brother's Suzuki 125SP running again - after being dormant for about 30 years.
The original CDI would fire at low RPM (kick starting), but not higher RPMs (idle), so the bike would fire but never run for more than a few revolutions. We worked with the carburetor for way too long before we decided that it might not be getting spark at more than kick starting RPMs.
A great explanation of how the cdi works. After two or three weeks of searching, you gave me a plain and simple way to check my ignition system. Flustered and P Oed' I had almost given up on what or how to proceed. Thanks bunches for a great video. I now have a new trail to follow.
In addition to giving a very good lecture on cdi boxes, you also gave a perfect lecture on how to make a good video: Loud, clear and well explained. Great job.
Best expl6I have seen on the CDI. My bike is currently being rebuilt and I am getting a performance CDI. This will also give you more low end torque and High end speed. Amazing what this upgrade can do for your ride.
I am working on a Honda 4TRX300 (that is the 4WD), circa 1996 or 97. The CDI is AC and it is as big as the wrong one (DC) seen in this video. Only one of the wires on the CDI is where and what this video says. Not saying he is wrong, just saying the 4trax is different. Black/Yellow striped: sends power from the CDI to the coil Dark green: ground Light green: is connected to the "reverse" gear switch (I assume it keeps CDI from sending power to the coil if gearing is in reverse). Black/white: is from the run (kill) switch on the handlebar ( and is where the video says it is on the CDI) Blue/yellow: is the signal wire from the pulser (trigger) Yellow: is the power source directly from the stator area. It Ts off one of the 3 yellow wires that sends current from the stator area to the regulator (where it gets changed to DC for charging the battery). The T is BEFORE the regulator, thus, we have an AC CDI.
this makes sense to me now. Recently got a GY6 150cc in a 'as parts' state. It had 2 CDI's with it and the one plugged in produced spark and ran but it refused to switch off with the key, the kill switch wire was in a permanent grounded state which means it should have never run. Problem was loop wire to the bike stand which I removed. I switched the CDI also to a known-good GY6 50cc one (which was smaller in size) and it ran perfectly with the on-off key. The scooter came with parts from also a pit bike. My conclusion is now that the 1 connected to the scooter on receiving it was a DC one and incorrect (likely off pit bike) and the other CDI an AC one. But the one off a 50cc works just fine anyway so ill stick with that!
I have been working on JDs for a long long time and believe it or not this is my first ever experience with a 1969 JD SSI system. But thanks to Rolling Wrench it was a easy way to learn about this system. Great teacher and I found his point by point instructions spot on. Just made my job infinitely easier. I am an old guy and I never even saw on of these units until this past February when a customer asked me why it would run. Opened the hood and saw Solid State Ignition and I said s&@t where did this come from? LOL This must have been a year year engine. Thanks for the help.
Great vid! A video about how to test the triger signal would be great too. Not just for resistance but for generated voltage while cranking too. And maybe how to simulate a triger signal with an AA batery to see how your CDI is Ok or at least ok to start your bike.
Thanks for the review. I have an old '85 Honda I'm trying to revive. With all the Chinese junk peddlers out there I was getting confused as to which (AC or DC) CDI unit I needed for my bike. Thanks to your video I'm better prepared to make the correct choice.
I recently got a 1986 kaw Concourse and cannot get fire at the plugs.? Voltage from IGN to CDI box 12v or 9v for security, I have heard that there's a diode on IGN that reduce the voltage. Have juice at coils. It's the only one I can not seem to crank. Bumbing me out.
Diodes aren't used in a circuit to alter voltage,resistors are.Diodes conduct current in one direction only,like a one way valve.Voltage drop over a diode is usually 0.7 volts,unless it's a Zener diode.
Very complete explanation, I liked how all eventualities that one can meet, are axplained in one video, so that I don´t have to "puzzle" my understanding together from several, and often controvercsial-to-each-other videos...
So... I've got a Yamaha xs 1100 it has 2 pickup coils for ignition..so if my cdi box is bad and no longer available ..I probably could run two of these DC controllers ...??
Incredible video on CDI boxes and how they work. I have a 2010 Brute Force 750 and I was in the process of taking the battery out and before I could detach the battery terminals it slipped and made contact with the frame of the bike. I heard an electrical distortion as if a fuse had blown but all fuses are good and it appears the relays are ok too. Now when I turn the ignition to on the light switch doesn't work or the push start button won't work either and the fan immediately comes on. Also the FI is flashing codes 11, 12, and 14 which have nothing to do with my issue. I also tried bridging the solenoid to see if it would start. It will turn over but not crank. After unplugging the Fuel Pump relay I ran a jumper wire from the input directly to the positive battery terminal to see if the pump would run and it turned on instantly. Another interesting discovery was that when I hooked the battery up to a charger and combined it with the jumper wire to the battery charger positive terminal my electric headlights and push-start button was working again but the bike still won't start. It sounds like it wants to start but just simply continues to turn over. If anyone knows the reason or could pinpoint what the issue is feel free to share thanks.👍😎👌
@@jerrybigrig9475 No still no luck. I did discover today that for some strange reason my rear spark plug coil shuts down all electrical power to the ATV only when it's connected to the spark plug depending on how you move the coil. Under normal circumstances it's nothing really unusual about that but I'm not understanding why all the electrical power would shutdown because of a simple spark plug/coil connection. I don't have any spark from both coils. I never could of imagined that a battery could cause this much electrical damage and confusion.😳
Yes I really got a lot out of your video about the CDI box. My Honda Trail ct110 has seven wires not six and I can't get a CDI box with seven pins what should I do? Your video has helped me but please if you want to make a video for that it would be great. I wish I could just plug & go. [Also subscribed] oh by the way my cdi has sowlen and the casing is chipped the bike starts to sputter very bad at 35mph and even quits. Please reply 🙏 what to do with the wire with no pin?
Hi Rolling Wrench, you have done well, almost missed out on this given , the dc_ ac _ cdi box at the proper time. It sure stagnate everything with fixes and thanks a lot for your help today! You' re the Best?!?
there are also some CDIs with strange wirings. Some Qingqi use both AC and DC. The DC is only for the microchip. SYM Mio the same but 2 wires changed place compared to that Quingqi. It's an open field finding out all differrent wirings on CDIs. Greets from Germany!
Thanks Honda dio AF34 DC cdi 1version ok . I fixed it for 1 week. They write a lot of connections, Russian and Japanese pages, and they are good too. specified, looks the same on the outside but must be measured with a multimeter to be sure
a better expansion of ac would be beneficial i got some but not all i would like you to demonstrate how it works in a modal please, can point's be put in place of the trigger to collapse the coile , ?
Didnt know where else i could ask a question. Working on a tao tao i believe its about a 200cc. Several years old. No spark. The stator tested bad on the blue wire. Thats fine. But theres another component separate from the stator area. Its harness runs in-between the stator house and front sprocket house. The component has 2 #2 Phillips 6mm screws holding it to a shaft with a counter or magnet on it. Also is wet with oil. I need to know about that component. is it a trigger/pickup? Etc etc etc. Of course theres more info but too much to say here. Thanks Bo
Thanks! I was wondering how it is working... I am working on a Tuk Tuk in Thailand with a Honda dream 100 engine and the wiring harness has been messed up in a savage way... I fixed up pretty much everything now but I wanted to understand and check the CDI. Great video!
they simply use Cheap stock Cdi from China.. Lihua or Lifan CDi that gives Unlimited RPM but some needs conversion... if u want simple plug and play performance cdi buy dual band cdi w/c is costly
So what are the down sides/ cautions to a performance CDI box? Increased maintenance schedule, wear out parts faster( which are most likely to wear our first)? Nothing is free... Especially in performance.
Hey there rolling wrench, I'm hoping you can shed some light on a couple issues I'm having from 2 different upgrade parts I installed on my 2006 Honda CRF450X SuperMoto. The first one is my 100watt stator and reg/rectifier kit from TRAIL TECH. What I am confused with is the regulator/rectifier that came with this kit. There are 2 adjustable knobs on the top, one is for setting "delay" and the other is for "voltage". The only info I have on this is from the installation instruction sheet that came with the kit, and that consist of a single paragraph accompanied with a picture of the REG/REC under the title "adjusting REG/REC relay timer" and little red arrows pointing to the obvious, to the dial labeled "delay" and the other "voltage". Basically, all it says is "adjust delay dial cw to decrease relay active time", then of course ccw to increase relay active time, and literally nothing about the voltage dial. Can you help me with this? I mean what relay am I activating for delay time increase or decrease? The other upgrade is a VORTEX X10 CDI. Now like the TRAIL TECH installation sheet, the VORTEX install sheet has it's points of similar vagueness. It has to do with the bullet connecter end grey wire. All it says is; "now plug in the bullet end grey wire". And that's it, all the rest of the installation instructions were complete ie connect this to that, or route this wire from pin "x" to pin "y". So do you think you can help me out with where that grey wire plugs to? Thank you so much for your time efforts and help regarding this matter. Lee
Hi there, i don't know if anyone sees this comment or nut but would like to give it a shot. I have an AC CDI with 50cc scooter, turn key no light, after starting scooter lights gets on and pretty low with flickering unless i'm giving gas which speeds up stator and in that way gets bright... That cause my head light bulb pops every couple of month... Is there any way on wire configuration on my CDI to change all lights feeds from battery rather than stator? Thanks in advance!
Of your lights are popping you have a bad rectifier regulator. It’s not regulating the charging system. If it goes past 14v you will blow lights. You can always wire your headlights dc. But I would recommend upgrading to led off you do that so your charging system can keep up. This will solve the low idle flicker. Oorrrr you can raise your idle just high enough that your tire isn’t spinning resulting in brighter lights at idle
@@RollingWrench first of all thank you so much for your reply! Didn't thought I would get one on such old video! 😊 Actually I even tried led bulbs on the head lights ( small and big) both fried after couple of weeks... On idle both traditional or led bulbs flickering... ( I have a Chinese 50Cc scooter with Gy6 139qmb engine)
to much current getting to the light' s by way of magneto try a control regulating current diode Or running the lit from the battery Insted of the dynamo or if already on the battery It passably a a faulty ac? dc regulator , charge in to the [bat] hop this helps ,
I have a falcon 250cc or venom gtx automatic motorcycle with a 250gy6 and it has a AC and a DC cdi. Haven't jumped into harness to know why yet but if I ride the bike before it's all the way warmed up, going down the road, the electrical tries to switch to a different setting and my headlights will go off then on for a min until I get it warmed up with rpm then it switches current I think because it will reset my neons that are directly connected to the battery. Everything is new and works great tho. Just found having both cdis crazy. I do need to upgrade a8 pole stator to my other bike tho.. 2 good new ones still not supplying enough power. Has to be it to because I've changed every single electrical thing in the bike. Every single thing. It's all working just not enough. Hope to find help somewhere about the 8 pole upgrade but not much that I've found on how to change the wires and cdi and rectifier for the white yellow green connector
So confused now. I have a American Sports Work go kart. That I bought brand new. It is supposed to be a DC system, but it only has 3 wires (one ground) on the 4 prong plug, and only one wire to the 2 prong plug. The cdi is the larger one. What is the purpose of the second ground.
Please you are really educating me. I have an old suzuki dr 650 Zen, dirt bike, which is not starting and all wires are out. How can I bridge or bypass the system to do conversion wiring to get it functional
How does the kill switch work on a DC CDI box? I have a Kandi Kart with a DC CDI (no kill wire) and the wiring harness is melted, so I am trying to get it it running and back together. There is a kill switch mounted on it- I need to know where the wire goes. Thanks!
I have a 2019 amigo 50cc ....I keep hearing to pull the purple or pink wire to make faster but after opening it up I don't see/have neither purple or pink
You say blow your system, can you elaborate. My electric start hasnt worked for years no problem kick start tho. Back when i ised to have a radio, led lights all over it, and a super bright car headlight on there. Im currently replacing everything slowly.
Lucianoa787 asked if you could show how to test the trigger signal. Not just for resistance but for generated voltage while cranking. This would be great for an AC. And maybe how to simulate a trigger signal with an AA battery. I guess that must be DC only. Is their a video like this available?
Do you mean the pickup coil signal? You will need an oscilloscope in order to measure the output voltage because is a pulsating signal. But that won't gives you any significant diagnostic information. The voltage is variable and could be anywhere between 4 and 12 v. A LED will be more useful. Connect LED leads to the blue/white wire and ground coming from the pick up coil and LED will blink at cranking if the signal is present. In order to simulate a pulsating signal you could make a circuit with a IC 555 and a 5v power source (maybe 3 AA batteries in series?). That would be enough to trigger the capacitor inside CDI and in turn generate a spark from the ignition coil.
Hi, I have a Symphony SR125 Scooter. When I Switch on the ignition the Blueish dashboard lights up and the Speedo needle Checks up . Then All of a sudden Every thing goes out. Don't know Whats Causing this. I Suspect the DC Cdi unit , But from your Video it Seems that's Only to do With the ignition Side. Please help 🙏
I'm getting 24 volts out of my spark plug what am I doing wrong I have an aftermarket cdi upgrade now I have the red black wire to the 12 v connection n green to the ground n blue to the stator n black to my coil n the black n white wire is connected to the ignition from what I understand from the videos I've seen I shouldn't have the black and white one not connected to nothing right ?
Wow, Mr genius great learning video. Two thumbs up. My question: i hav da most fuked up chi nah quad. My rectifier is plastic. Blk red pnk gry gree wires comes out of rectifier. Black n pnk not connected. Grn red gry goes to the vehicle. I bought a new one has 5 wires. Blk red yel pnk grn. How do i connect this new with existing blk red gry? Pls help n God bless you!
Mine has 2 grounds. A black wnd red wire going to stator from where yours says kill switch and where your red one is mine is black going to my ignition.
There's a recall on the 2022 ktm125sx. Its about the cdi box! Ktm says the cdi box is putting out too much feed for the crank to handle the amount of power provided to it. I'm curious can a cdi box really affect that?!
hey boss thank you for that video I just got a roketa 250cc buggy I cant find the vin not sure what year. the previous person has attempted to wire it but it has been hacked on I am no expert lol but I have managed to get it to turn over but I can't get spark to the plug so since I'm not sure what goes where what my be the best way to check that i have a key switch but it is not connected I would try to find a new wiring harness but things are so confusing not for positive where to start it appears the the components all there plugs so my thinking was get a harness n put it all back correctly lol as for now I am just trying to get spark to see if it will run any info would be greatly appreciated thanks. first time buggy owner...
Time 7.50. I have a multimeter. You say to measure it with the key on.. but how am I supposed to measure/ make contact with multimeter leads if the wire connection blocks are in?? Confused? Also, everyone is saying I have a DC cdi, but yet I have a kill switch, but according to you, I shouldn't. Can you look at them physically and see the difference, (not the size) but something different about the pins or something? For a Baja Reaction 250 gokart buggy.
I'm having a bit of an issue I bought my first CDI from Amazon"racing CDI" and when I installed it it blew a fuse. I figured defective send it back got another one did the same thing. Then after my research that's when I found out AC and DC CDI so my scooter is an AC Set up OEM. So I went and spent a little more for a new CDI and still blowing fuses. Now I'm lost. Please help. Plus I noticed the 2 CDI in this video has identical connectors
Thank you. I think I have to replace my CDI box. Love my 50cc scooter, thanks for the detailed diagrams. When I bought the scooter, 1 yr ago, I didn't know -- does it have water, xmission fluid, oil, what? Where? How. Today, I've changed the oils x 2, replaced myriad hoses, vacuum lines, gas lines, filter w/ a petcock, even. I digress. Thank you.
Can a DC CDI wired be kickstarted? I want to add a kickstart to my 150CC coolster ATV but after watching this I believing this to be not possible as if I can manually start the motor with the kickstart I would need the killswitch to kill the motor then.
I have bought multiple CDI and coils swapped stators and still no spark on my 97 Yamaha warrior. I’m desperate for help. This has been a year long now expensive problem. I took it to a dealer and they couldn’t figure it out or wouldn’t. Please help
I love the fact, u touched base on the basic parts of a c.d.I. But, I’m also interested in the racing side details after switching to upgrades. What’s the best. Why & why not upgrade. Is it even wroth switching or is it more then just a quick easy fix to upgrade the ignition system.
Your videos are the best out there, because they explained thoroughly with detail. You try your best to make sure the viewer understands, by using illustrations etc. Thanks! Another subscriber. BY the way, I installed a new Stator the other day (my current one was working, I just thought I’d install a new one), but in the process, I think I may have moved the timing cover, and forgot to put it back to TDC. Now no start.
I know that there’s been a lot of discussion out there about aftermarket parts. In your professional opinion do you feel that swapping out the original cdi box in any Chinese scooter for example any of the mad dog generations is worth it. Is it truly a better upgrade than the stock cdi box.
Reply we now i have done it yes, They brak far too easily & we do not all have account on ebay & such, a trip to the local store do's me, if i can't get it there i'm not interested, So until their on the self & can be conveniently replast easily broken yes easily replast NO. But not so good, if your in to deep diving a ATV. i see a lot off , The points will let you down. But then thats not for me all throw there's a way around that. but i'm not in to taking ATV, in to deep water . as mos do .
Awesome video!. very informative. I ' m currently working on a LM200 American Sport workers for an elderly couple so can get around their property. The compliant the engine has no power to the spark plug and before it stopped running it was idling to fast. Any help for the couple would be very appreciated. God Blees.
how do I know if the CDI I have is any good ? Bench test ? I'm trying to get spark from 200cc Cinese dirtbike loose engine from a new stator/trigger coils and am getting 40 V AC at power (to CDI red and black) but No spark from bue and white trigger wire at CDI? I am connecting starter direct with jumper cables to turn it over.. in attempt to eliminate useless wireing
Why is it that the Honda XR150L can not adopt CDI from its bigger XR200 or 250 bike's CDI to increase power? Is the frequency that does not match? Would you share your expertise?
I replaced coil and spark plug, it looks like I have a weak spark, can't start the atv. What is more likely to cause a weak spark, cdi box, the trigger, or stator?
Hi mate. Could you help me please figure this cdi out if it is DC or AC? Bike is an India origin Kawasaki Rouser 180. 1 cyl with 2 spark plugs. It has 2 wires each going towards the 2 ignotion coils which were supposed to be the wires for the dc input or the ac kill switch as you have taught on your very educational video.
Is not very easy to tell if a CDI is AC or DC from its pinout. Especially with bikes assembled in India. Look for a wire coming from stator into CDI. If so, then is AC. Otherwise look for a wire coming from the main harness that carries 12v when key switch is on. If so, then is DC.
I have bought 3 different a/c cdi boxes . and dont get spark.. What can i do to get them to work. I have orange, blue and black advance boxes? Need a little help. Im sure my system is AC...
9000rpm 9200rpm to 15000rpm, but is it possible to lock the rpm as we want by changing cdi's components or THE cdi BECAUSE engine won't have same life work duration...more engine go to max perf more friction between steel engine parts. Thanks it help to understand well
Lets say I have a random ZNEN scoot with a 150 GY6 that has a DC system but also a kick starter - the kick starter would be no good to me if the battery is dead right?
Its hard to find dudes who explains these stuff so well like you do.thanks for sharing this man, one more subscriber for you!
Thank you 🙏 that means a lot! I appreciate the support
You have that ignate soul of a teacher,Nowadays i can proudly say i know all this by heart.I am a telecommunication technician and understand how these things work very well.I wish i had seen this video 3 or four years ago when the so called mechanics of Miami got me so frustrated that i decided to learn by myself,i feel i live in the outback,what a disaster..I have been through hell and back learning everything about scooters and motorcycles..I have had 28 motorcycles and scooters combined.I am 52..and nowadays when i watch videos of mechanics i can tell right away who is a part changer ,like the ones i ran away from and a real mechanic that makes perfect sense like you..I give you credit,the highest credit for your true knowledge and will to share it with others..You do not need advertizing because you do know what you are doing and saying,and i am very proud of you..Even though this is something i know very well i want to thank you for your time and dedication..If i had met a mechanic like you,i would not know what i know today..Nowadays i love this,but when you depend on yourself to fix your vehicles without knowing these things , like it happened to me.it gets really frustrating,now at the end of the road i feel i have won a battle..I see more than a few thumb downs on this video,and these are probably dudes who are jealous of your high IQ..Disregard these pigs that only think about eating their next meal..These are the dudes who unethically oppose people like you and me ,because we earn our living honestly with transparency and honesty..When you are good,and you are excellent,you can be showing it all,and yet you will become even a stronger magnet to attract great customers to your business,versus the shady dudes whose mechanical practices suck..i do not do this for a living and i have parts and tools most shops here in Miami do not have and thats embarrassing.For years i heard things from shop owners here that are too frustrating to mention publicly..One thing i do wanna say is, many mechanics would tell me that it would be better to buy a new engine than to fix anything in the gear box.I was not sure about that and one day i bought a 12 ton shop press and people laughed at me.Today after 12000 miles of hard riding i can tell you this.i bought all the ball bearings on line,and i rebuilt a gear box on a 150 cc from A to Z,i replaced every bearing by high quality japanese ones and this scooter glides,way much better than when i bought it brand new,totally smooth like a japanese scooter..i even replaced the ones in the swing arm as well as the gears..to make it even better i mix my own gear box oil using a viscosity chart and the results are amazing..but i have said enough and the truth is you are a great representation of what a mechanic should be in this great nation..Very few like you,you do make a difference,thumbs up and the very best for you,i feel sorry for pretentious mediocre part changers who live on scamming and lying to make a living
Thanks you for taking the time to write this. I feel your frustration, I’m glad you learned it on your own. I am happy to help others understand. Thanks for the support 🙏
That's the clearest explanation of a scary issue I ever heard. Thank you.
Man I'm new to gy6 engines. The way you explain things makes it so simple to understand how it all works. Thanks for the great information.
Thanks! Using this video and some wiring schematics I was able to replace a $271.90 part (32900-05210) (7 wire) with a $7.49 part (5 wire) and get my brother's Suzuki 125SP running again - after being dormant for about 30 years.
The original CDI would fire at low RPM (kick starting), but not higher RPMs (idle), so the bike would fire but never run for more than a few revolutions. We worked with the carburetor for way too long before we decided that it might not be getting spark at more than kick starting RPMs.
That's amazing.
A great explanation of how the cdi works. After two or three weeks of searching, you gave me a plain and simple way to check my ignition system. Flustered and P Oed' I had almost given up on what or how to proceed. Thanks bunches for a great video. I now have a new trail to follow.
Perfect! This is why I do these videos, for comments like this! Thank you 🙏
Electrical diagnostics can be frustrating for sure
In addition to giving a very good lecture on cdi boxes, you also gave a perfect lecture on how to make a good video: Loud, clear and well explained. Great job.
Sweeet! Thanks for the support 🙏
Agreed
I need some help
@@RollingWrench can you please help me out with my scooter
@@zado3145 yes no problem:
www.rollingwrenchdenver.com/products/rolling-wrench-tech-support-help?keyword=tech%20
One of the simplest video I've ever come across.... thank you, this video you made helped me a lot
Thanks so much i have purchased 5 a/c cdi boxes till i saw this video now my bike works like a dream
Best expl6I have seen on the CDI. My bike is currently being rebuilt and I am getting a performance CDI. This will also give you more low end torque and High end speed. Amazing what this upgrade can do for your ride.
Do you know which performance CDI will be best for 150cc dc?
awesome job- you did that in a way that almost everyone can understand
I am working on a Honda 4TRX300 (that is the 4WD), circa 1996 or 97. The CDI is AC and it is as big as the wrong one (DC) seen in this video.
Only one of the wires on the CDI is where and what this video says. Not saying he is wrong, just saying the 4trax is different.
Black/Yellow striped: sends power from the CDI to the coil
Dark green: ground
Light green: is connected to the "reverse" gear switch (I assume it keeps CDI from sending power to the coil if gearing is in reverse).
Black/white: is from the run (kill) switch on the handlebar ( and is where the video says it is on the CDI)
Blue/yellow: is the signal wire from the pulser (trigger)
Yellow: is the power source directly from the stator area. It Ts off one of the 3 yellow wires that sends current from the stator area to the regulator (where it gets changed to DC for charging the battery). The T is BEFORE the regulator, thus, we have an AC CDI.
this makes sense to me now. Recently got a GY6 150cc in a 'as parts' state. It had 2 CDI's with it and the one plugged in produced spark and ran but it refused to switch off with the key, the kill switch wire was in a permanent grounded state which means it should have never run. Problem was loop wire to the bike stand which I removed. I switched the CDI also to a known-good GY6 50cc one (which was smaller in size) and it ran perfectly with the on-off key. The scooter came with parts from also a pit bike. My conclusion is now that the 1 connected to the scooter on receiving it was a DC one and incorrect (likely off pit bike) and the other CDI an AC one. But the one off a 50cc works just fine anyway so ill stick with that!
I have been working on JDs for a long long time and believe it or not this is my first ever experience with a 1969 JD SSI system. But thanks to Rolling Wrench it was a easy way to learn about this system. Great teacher and I found his point by point instructions spot on. Just made my job infinitely easier. I am an old guy and I never even saw on of these units until this past February when a customer asked me why it would run. Opened the hood and saw Solid State Ignition and I said s&@t where did this come from? LOL This must have been a year year engine. Thanks for the help.
Finally someone that explains it to me like I’m stupid.
Thanks, some of the most helpful info in a situation with no spark! Great video thank you
Great Explanation. Just what I needed to solve the problem with my Polaris 90 quad. Thanks
Great vid! A video about how to test the triger signal would be great too. Not just for resistance but for generated voltage while cranking too. And maybe how to simulate a triger signal with an AA batery to see how your CDI is Ok or at least ok to start your bike.
Thanks for the review. I have an old '85 Honda I'm trying to revive. With all the Chinese junk peddlers out there I was getting confused as to which (AC or DC) CDI unit I needed for my bike. Thanks to your video I'm better prepared to make the correct choice.
I recently got a 1986 kaw Concourse and cannot get fire at the plugs.? Voltage from IGN to CDI box 12v or 9v for security, I have heard that there's a diode on IGN that reduce the voltage. Have juice at coils. It's the only one I can not seem to crank. Bumbing me out.
Diodes aren't used in a circuit to alter voltage,resistors are.Diodes conduct current in one direction only,like a one way valve.Voltage drop over a diode is usually 0.7 volts,unless it's a Zener diode.
And again. . . . . .thank you for another well explained video taking the mystery out of CDI ignitions.
From Kelowna British Columbia Canada
Very complete explanation, I liked how all eventualities that one can meet, are axplained in one video, so that I don´t have to "puzzle" my understanding together from several, and often controvercsial-to-each-other videos...
How about an episode on choosing the best roller weights for different riding needs?
Thank you so much for this video. totally justifies spending the extra in your shop.
Perfect explanation, exactly what I needed to know, and to the point.... Thanks.
Thanks for the support 🙏🏻💯
So...
I've got a Yamaha xs 1100 it has 2 pickup coils for ignition..so if my cdi box is bad and no longer available ..I probably could run two of these DC controllers ...??
Incredible video on CDI boxes and how they work. I have a 2010 Brute Force 750 and I was in the process of taking the battery out and before I could detach the battery terminals it slipped and made contact with the frame of the bike.
I heard an electrical distortion as if a fuse had blown but all fuses are good and it appears the relays are ok too. Now when I turn the ignition to on the light switch doesn't work or the push start button won't work either and the fan immediately comes on. Also the FI is flashing codes 11, 12, and 14 which have nothing to do with my issue. I also tried bridging the solenoid to see if it would start. It will turn over but not crank.
After unplugging the Fuel Pump relay I ran a jumper wire from the input directly to the positive battery terminal to see if the pump would run and it turned on instantly.
Another interesting discovery was that when I hooked the battery up to a charger and combined it with the jumper wire to the battery charger positive terminal my electric headlights and push-start button was working again but the bike still won't start. It sounds like it wants to start but just simply continues to turn over. If anyone knows the reason or could pinpoint what the issue is feel free to share thanks.👍😎👌
Did you get it running ..??
@@jerrybigrig9475 No still no luck. I did discover today that for some strange reason my rear spark plug coil shuts down all electrical power to the ATV only when it's connected to the spark plug depending on how you move the coil. Under normal circumstances it's nothing really unusual about that but I'm not understanding why all the electrical power would shutdown because of a simple spark plug/coil connection. I don't have any spark from both coils. I never could of imagined that a battery could cause this much electrical damage and confusion.😳
Yes I really got a lot out of your video about the CDI box. My Honda Trail ct110 has seven wires not six and I can't get a CDI box with seven pins what should I do? Your video has helped me but please if you want to make a video for that it would be great. I wish I could just plug & go. [Also subscribed] oh by the way my cdi has sowlen and the casing is chipped the bike starts to sputter very bad at 35mph and even quits. Please reply 🙏 what to do with the wire with no pin?
Thanks for letting me know about the CDI
Hi Rolling Wrench, you have done well, almost missed out on this given , the dc_ ac _ cdi box at the proper time. It sure stagnate everything with fixes and thanks a lot for your help today! You' re the Best?!?
Great explanation tutorial on the CDI boxes. thanks for posting. cheers
there are also some CDIs with strange wirings.
Some Qingqi use both AC and DC. The DC is only for the microchip. SYM Mio the same but 2 wires changed place compared to that Quingqi.
It's an open field finding out all differrent wirings on CDIs.
Greets from Germany!
Thanks Honda dio AF34 DC cdi 1version ok . I fixed it for 1 week. They write a lot of connections, Russian and Japanese pages, and they are good too. specified, looks the same on the outside but must be measured with a multimeter to be sure
that was the best video about cdi i have seen..very helpful when you have problem with ignition ..thanx man!👍
Thanks for taking the time to leave a positive comment. Thanks for the support 🙏
a better expansion of ac would be beneficial i got some but not all i would like you to demonstrate how it works in a modal please, can point's be put in place of the trigger to collapse the coile , ?
Didnt know where else i could ask a question.
Working on a tao tao i believe its about a 200cc. Several years old. No spark.
The stator tested bad on the blue wire.
Thats fine. But theres another component separate from the stator area. Its harness runs in-between the stator house and front sprocket house. The component has 2 #2 Phillips 6mm screws holding it to a shaft with a counter or magnet on it. Also is wet with oil. I need to know about that component. is it a trigger/pickup? Etc etc etc. Of course theres more info but too much to say here. Thanks
Bo
Great video like how you explained everything made it easier to understand
You really need to have atleast knowledge on basics how motorcycle works in order to appreciate how clear this dude explains everything
👍
Super informative video. So much helpful information, this is my LAST video I'll be watching about CDI's. ✌
Thanks! I was wondering how it is working... I am working on a Tuk Tuk in Thailand with a Honda dream 100 engine and the wiring harness has been messed up in a savage way... I fixed up pretty much everything now but I wanted to understand and check the CDI. Great video!
👌 ooohhhhh how I love Thailand!
they simply use Cheap stock Cdi from China.. Lihua or Lifan CDi that gives Unlimited RPM but some needs conversion... if u want simple plug and play performance cdi buy dual band cdi w/c is costly
Hello brother, your explanation is very nice and simple with pictures that,s make easy to understand. Thanks, with all respect
Thanks for the kind words
So what are the down sides/ cautions to a performance CDI box? Increased maintenance schedule, wear out parts faster( which are most likely to wear our first)? Nothing is free... Especially in performance.
Thanks, very good video on CDI units. I would like to see more information on how the CDI unit rev limits and advances the timing.
Thanks for the support 🙏. I’ll work on that video
Thank you sir you are a gentlemen and a scholar. FYI your CDI being reversed next to the drawing was killing my OCD lol.
Hello. How does the wiring look like if you have 2 cylinders?
Get a test light. They’re a few bucks and are indispensable. Great video.
Hey there rolling wrench, I'm hoping you can shed some light on a couple issues I'm having from 2 different upgrade parts I installed on my 2006 Honda CRF450X SuperMoto. The first one is my 100watt stator and reg/rectifier kit from TRAIL TECH. What I am confused with is the regulator/rectifier that came with this kit. There are 2 adjustable knobs on the top, one is for setting "delay" and the other is for "voltage". The only info I have on this is from the installation instruction sheet that came with the kit, and that consist of a single paragraph accompanied with a picture of the REG/REC under the title "adjusting REG/REC relay timer" and little red arrows pointing to the obvious, to the dial labeled "delay" and the other "voltage". Basically, all it says is "adjust delay dial cw to decrease relay active time", then of course ccw to increase relay active time, and literally nothing about the voltage dial. Can you help me with this? I mean what relay am I activating for delay time increase or decrease? The other upgrade is a VORTEX X10 CDI. Now like the TRAIL TECH installation sheet, the VORTEX install sheet has it's points of similar vagueness. It has to do with the bullet connecter end grey wire. All it says is; "now plug in the bullet end grey wire". And that's it, all the rest of the installation instructions were complete ie connect this to that, or route this wire from pin "x" to pin "y". So do you think you can help me out with where that grey wire plugs to? Thank you so much for your time efforts and help regarding this matter.
Lee
Our arctic cat 90 4 stroke is DC and has a kill wire next to the hot coming in , the dual plug .
Best vids I've ever seen on cdi boxes thank you so much God bless ya.
Sweeet! Thanks for the positive vibes 🙏
The most informative video I’ve seen on the subject
Thank you so much
Thanks for the feedback :-)
Hi there, i don't know if anyone sees this comment or nut but would like to give it a shot. I have an AC CDI with 50cc scooter, turn key no light, after starting scooter lights gets on and pretty low with flickering unless i'm giving gas which speeds up stator and in that way gets bright... That cause my head light bulb pops every couple of month... Is there any way on wire configuration on my CDI to change all lights feeds from battery rather than stator? Thanks in advance!
Of your lights are popping you have a bad rectifier regulator. It’s not regulating the charging system. If it goes past 14v you will blow lights. You can always wire your headlights dc. But I would recommend upgrading to led off you do that so your charging system can keep up. This will solve the low idle flicker. Oorrrr you can raise your idle just high enough that your tire isn’t spinning resulting in brighter lights at idle
@@RollingWrench first of all thank you so much for your reply! Didn't thought I would get one on such old video! 😊 Actually I even tried led bulbs on the head lights ( small and big) both fried after couple of weeks... On idle both traditional or led bulbs flickering... ( I have a Chinese 50Cc scooter with Gy6 139qmb engine)
@@ardakaraoglanyan6319 I would recommend checking the rec reg and running the headlights it dc current. You may even have a bad headlight resistor
@@RollingWrench I will definitely check! I don't know how much I can thanks to you! Really much appreciated mate!
to much current getting to the light' s by way of magneto try a control regulating current diode Or running the lit from the battery Insted of the dynamo or if already on the battery It passably a a faulty ac? dc regulator , charge in to the [bat] hop this helps ,
Looking for a gas sensor fuel floater replacement for maddog gen 4??
I have a falcon 250cc or venom gtx automatic motorcycle with a 250gy6 and it has a AC and a DC cdi. Haven't jumped into harness to know why yet but if I ride the bike before it's all the way warmed up, going down the road, the electrical tries to switch to a different setting and my headlights will go off then on for a min until I get it warmed up with rpm then it switches current I think because it will reset my neons that are directly connected to the battery. Everything is new and works great tho. Just found having both cdis crazy. I do need to upgrade a8 pole stator to my other bike tho.. 2 good new ones still not supplying enough power. Has to be it to because I've changed every single electrical thing in the bike. Every single thing. It's all working just not enough. Hope to find help somewhere about the 8 pole upgrade but not much that I've found on how to change the wires and cdi and rectifier for the white yellow green connector
So confused now. I have a American Sports Work go kart. That I bought brand new. It is supposed to be a DC system, but it only has 3 wires (one ground) on the 4 prong plug, and only one wire to the 2 prong plug. The cdi is the larger one. What is the purpose of the second ground.
Then, the stator in DC CDI isn't connected to. Right? Or is there another way for the DC CDI to calculate the timing to give elec to the IG coil?
I want u to explain how to rewind a stater in details about grounded and out put wires
does it make a difference in the cdi box if its 2 or 4 stroke?
Please you are really educating me. I have an old suzuki dr 650 Zen, dirt bike, which is not starting and all wires are out. How can I bridge or bypass the system to do conversion wiring to get it functional
How does the kill switch work on a DC CDI box? I have a Kandi Kart with a DC CDI (no kill wire) and the wiring harness is melted, so I am trying to get it it running and back together. There is a kill switch mounted on it- I need to know where the wire goes. Thanks!
I have a 2019 amigo 50cc ....I keep hearing to pull the purple or pink wire to make faster but after opening it up I don't see/have neither purple or pink
You say blow your system, can you elaborate. My electric start hasnt worked for years no problem kick start tho. Back when i ised to have a radio, led lights all over it, and a super bright car headlight on there. Im currently replacing everything slowly.
Lucianoa787 asked if you could show how to test the trigger signal. Not just for resistance but for generated voltage while cranking. This would be great for an AC. And maybe how to simulate a trigger signal with an AA battery. I guess that must be DC only. Is their a video like this available?
Do you mean the pickup coil signal? You will need an oscilloscope in order to measure the output voltage because is a pulsating signal. But that won't gives you any significant diagnostic information. The voltage is variable and could be anywhere between 4 and 12 v. A LED will be more useful. Connect LED leads to the blue/white wire and ground coming from the pick up coil and LED will blink at cranking if the signal is present.
In order to simulate a pulsating signal you could make a circuit with a IC 555 and a 5v power source (maybe 3 AA batteries in series?). That would be enough to trigger the capacitor inside CDI and in turn generate a spark from the ignition coil.
I have three connections like that green-,White, blue and red-black, one was not in use as far as I can remember
Hi,
I have a Symphony SR125 Scooter.
When I Switch on the ignition the Blueish dashboard lights up and the Speedo needle Checks up . Then All of a sudden Every thing goes out. Don't know Whats Causing this.
I Suspect the DC Cdi unit , But from your Video it Seems that's Only to do With the ignition Side. Please help 🙏
That was a great video learning and very understanding for sure
I'm getting 24 volts out of my spark plug what am I doing wrong I have an aftermarket cdi upgrade now I have the red black wire to the 12 v connection n green to the ground n blue to the stator n black to my coil n the black n white wire is connected to the ignition from what I understand from the videos I've seen I shouldn't have the black and white one not connected to nothing right ?
Wow, Mr genius great learning video. Two thumbs up. My question: i hav da most fuked up chi nah quad. My rectifier is plastic. Blk red pnk gry gree wires comes out of rectifier. Black n pnk not connected. Grn red gry goes to the vehicle. I bought a new one has 5 wires. Blk red yel pnk grn. How do i connect this new with existing blk red gry? Pls help n God bless you!
Mine has 2 grounds. A black wnd red wire going to stator from where yours says kill switch and where your red one is mine is black going to my ignition.
There's a recall on the 2022 ktm125sx. Its about the cdi box! Ktm says the cdi box is putting out too much feed for the crank to handle the amount of power provided to it. I'm curious can a cdi box really affect that?!
hey boss thank you for that video
I just got a roketa 250cc buggy I cant find the vin not sure what year. the previous person has attempted to wire it but it has been hacked on I am no expert lol but I have managed to get it to turn over but I can't get spark to the plug so since I'm not sure what goes where what my be the best way to check that i have a key switch but it is not connected I would try to find a new wiring harness but things are so confusing not for positive where to start it appears the the components all there plugs so my thinking was get a harness n put it all back correctly lol as for now I am just trying to get spark to see if it will run any info would be greatly appreciated thanks. first time buggy owner...
I also want to add, and correct me if im wrong,
A bike with a AC cdi does not need a battery to work. It can work without a battery. The dc cdi dont
Time 7.50. I have a multimeter. You say to measure it with the key on.. but how am I supposed to measure/ make contact with multimeter leads if the wire connection blocks are in?? Confused? Also, everyone is saying I have a DC cdi, but yet I have a kill switch, but according to you, I shouldn't.
Can you look at them physically and see the difference, (not the size) but something different about the pins or something?
For a Baja Reaction 250 gokart buggy.
I'm having a bit of an issue I bought my first CDI from Amazon"racing CDI" and when I installed it it blew a fuse. I figured defective send it back got another one did the same thing. Then after my research that's when I found out AC and DC CDI so my scooter is an AC Set up OEM. So I went and spent a little more for a new CDI and still blowing fuses. Now I'm lost. Please help. Plus I noticed the 2 CDI in this video has identical connectors
Just wondering my cdi box (advanced) Don't work new from box bought two and same proublem with both...............what could I be doing wrong.
Thank you. I think I have to replace my CDI box. Love my 50cc scooter, thanks for the detailed diagrams. When I bought the scooter, 1 yr ago,
I didn't know -- does it have water, xmission fluid, oil, what? Where? How. Today, I've changed the oils x 2, replaced myriad hoses, vacuum lines, gas lines, filter w/ a petcock, even. I digress. Thank you.
Anyway you could make a external ckt to make a rev limiter or how to electronically control the timing by making a ckt
Can a DC CDI wired be kickstarted? I want to add a kickstart to my 150CC coolster ATV but after watching this I believing this to be not possible as if I can manually start the motor with the kickstart I would need the killswitch to kill the motor then.
I have bought multiple CDI and coils swapped stators and still no spark on my 97 Yamaha warrior. I’m desperate for help. This has been a year long now expensive problem. I took it to a dealer and they couldn’t figure it out or wouldn’t. Please help
I love the fact, u touched base on the basic parts of a c.d.I. But, I’m also interested in the racing side details after switching to upgrades. What’s the best. Why & why not upgrade. Is it even wroth switching or is it more then just a quick easy fix to upgrade the ignition system.
Your videos are the best out there, because they explained thoroughly with detail. You try your best to make sure the viewer understands, by using illustrations etc. Thanks! Another subscriber. BY the way, I installed a new Stator the other day (my current one was working, I just thought I’d install a new one), but in the process, I think I may have moved the timing cover, and forgot to put it back to TDC. Now no start.
Red wire coming out of my cdi box also new ignition switch engine cranks in the on position
Can you make a video on testing the ignition coil
Do you have any other links to this dc box? The originals have expired or can’t be displayed. Thanks
I know that there’s been a lot of discussion out there about aftermarket parts. In your professional opinion do you feel that swapping out the original cdi box in any Chinese scooter for example any of the mad dog generations is worth it. Is it truly a better upgrade than the stock cdi box.
Reply we now i have done it yes, They brak far too easily & we do not all have account on ebay & such, a trip to the local store do's me, if i can't get it there i'm not interested, So until their on the self & can be conveniently replast easily broken yes easily replast NO. But not so good, if your in to deep diving a ATV. i see a lot off , The points will let you down. But then thats not for me all throw there's a way around that. but i'm not in to taking ATV, in to deep water . as mos do .
Wtf did you just say? Broken English. Nothing made sense.
Bonjour, doit-il avoir une résistance entre le fils rouge du stator et la masse (terre/châssis) ? Merci
Yes
Is it possible to use an AC if you had a DC before?
Thank you so much for the video!!!
Well is it
No
Your DC system won't have the pulse coils that are needed.
Awesome video!. very informative. I ' m currently working on a LM200 American Sport workers for an elderly couple so can get around their property. The compliant the engine has no power to the spark plug and before it stopped running it was idling to fast. Any help for the couple would be very appreciated. God Blees.
how do I know if the CDI I have is any good ? Bench test ? I'm trying to get spark from 200cc Cinese dirtbike loose engine from a new stator/trigger coils and am getting 40 V AC at power (to CDI red and black) but No spark from bue and white trigger wire at CDI? I am connecting starter direct with jumper cables to turn it over.. in attempt to eliminate useless wireing
So if there is a voltage rectifier that means the stator is ac but the rectifier changes it to dc ?
Why is it that the Honda XR150L can not adopt CDI from its bigger XR200 or 250 bike's CDI to increase power? Is the frequency that does not match? Would you share your expertise?
i have a idea for a vid . get one of the Chinese cdi uints to run a bike with points . use the points as a switch ?
Simon Rawle That’s a good question and I’m wondering this as well
@@FlickTricksOffical it ca be done . its just sorting out a trigger for wen the point opens to fire the coil
Hi my question is by testing with multimeter how to know if it’s a DC or AC 😊
I replaced coil and spark plug, it looks like I have a weak spark, can't start the atv. What is more likely to cause a weak spark, cdi box, the trigger, or stator?
Excellent video! Appreciate the time and effort!!!
My pleasure!
Very Good explanation just a few questions what is inside the pick up coil does it send voltage to to cdi?
Hi mate. Could you help me please figure this cdi out if it is DC or AC? Bike is an India origin Kawasaki Rouser 180. 1 cyl with 2 spark plugs. It has 2 wires each going towards the 2 ignotion coils which were supposed to be the wires for the dc input or the ac kill switch as you have taught on your very educational video.
Is not very easy to tell if a CDI is AC or DC from its pinout. Especially with bikes assembled in India.
Look for a wire coming from stator into CDI. If so, then is AC. Otherwise look for a wire coming from the main harness that carries 12v when key switch is on. If so, then is DC.
Nice My natutunan ako 😁 I'm Also Electrician Thanks 😊
I have bought 3 different a/c cdi boxes . and dont get spark.. What can i do to get them to work. I have orange, blue and black advance boxes? Need a little help. Im sure my system is AC...
9000rpm 9200rpm to 15000rpm, but is it possible to lock the rpm as we want by changing cdi's components or THE cdi BECAUSE engine won't have same life work duration...more engine go to max perf more friction between steel engine parts. Thanks it help to understand well
Lets say I have a random ZNEN scoot with a 150 GY6 that has a DC system but also a kick starter - the kick starter would be no good to me if the battery is dead right?
All my wiring points to having a a/c cdi box but my lights turn on without engine running ? = lost ? any ideas? help