How To Test Motorcycle CDI Box, Ignition Coil




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R1 Menace: is cdi and ecu box the same thing? i found the ecu box on the oem parts list but not the cdi. i think its the same piece. my 4 stroke is only firing on two plugs. the coils where replaced and same issue. i switched the coils to see if one of them was bad but it was the location of the left spot that was not getting current through he coil. i assume its pre coil for the issue. the next item before the coil is the ecu box. someone correct me if im wrong. i dont want to fork out another bill on a waste of a part if its not the issue.

max de swart: hello.....question for all who knows.....can a CDI unit give a wrong signal to one ignition coil and a correct one to the other?I replaced allmost everything except the pick up coil and the CDI....my bike FZX 750 has the nmr 2 and 3 cilinder not heating up on the same time, bike starts, Sparks spark, but is missing power and drinking gas like a alcoholic.1 and 4 cil are left ignition coil and 2 and 3 are right side. so it takes longer for these cilinders to get combustion, and i have the feeling he timing of the spark in these cilinders are off.1 pick up coil that sends 2 signals to the CDI, but nothing to adjust on that, and sinds the left ignition coil works fine?bike had complete overhaul, head valves camchain, carbs.....but the problem remains.....i can even find a old message on a forum from a FZX with this problem, and i have te feeling that i just bought that bike....used CDI sets me back 120 euro but before i buy one i need to know if its possible that just 1 signal comes out wrong.

Gabriel Mundo: I have an atv that use to run flawlessly but now it doesn't. it turns over, lights work but it just will not start. Anyways, I replaced the ignition coil and spark plug, new battery, new carberator, but I'm not receiving a spark. could it be that I need to replace the CDI box?? please help, I'm stuck on what is wrong with it.

David Gurrola: the battery is new and I check all the cables  they are fine

gwhewitt: Can the smoke be replaced after you release it??

David Gurrola: HiI have a 81 Yamaha 850  And there's no nothing its like not have a battery in it.What could it be? the lights motor nothing comes on.

Tammie Satterfield: Max, I have to replace the cdi box in my older bike. I have been looking everyone I know, as well as friends looking for me as well. I have a 1985 Honda Shadow vt500c, and cannot find a replacement cdi box. I have seen a few on ebay, but one looked like trash, and the other "said" it "should" work for multiple years (but could guarantee fit). Do you have any recommendations?

Romelia Polly: I am sure that you will find good way to make it on Inplix Webpage.

Buck Ulrich: tape your battery ends do they don't short out your new CDI box,
an instead of a hay-mere,,,
you should of gotten a Haaaaaat-crap,to split that wide open
so we all could of seen it better
thanks for your funny video
don't break a leg

DunePanda: ive just spent like 500bucks on trying to figure out why i wasnt getting any spark.....ended up changing everything from the stator, coils, relays, and the CDI box....so i know how expensive these can get.....that haymeer you used, where can i pick that up? i cant find it on ebay.

Dean Jex: iv got a ram100 quad it got a spark but won't start tryd fuel down the head but still no joy any help would be great

dan smith: This is Not a CDI box-I've taken them apart. They are simply an electronics points eliminator.   A CDI requires a large cap, say, 1 or more uF, between coil minus ("") and ground.   It is charged to about 200 volts, then discharged into the coil. These contain no such large cap anywhere.  I've been an electronics tech 34 years, 17 years experience, plus several years as a hobby building hi voltage devices such as  Tesla coils, and externally driven coils, flybacks,  etc, to make sparks.

Aaron Bates: I dont know if I will get a response, but it would be great...
So I have been trying to get a 1973 yamaha ct1 175 running, and I changed the points, set them, I changed the condensor, and I have a low voltage spark. There is a spark there but its not strong enough. I think it could be the coil, but is there any other things it could be?

Dmitry Litvinov: hello my bike which is 02 zx7r has no spark i checked if the coils gets electricity and i found that the coils gets positive only and they missing negative. i checked if it has bad ground but its grounded well. all the fuses alright also. What can it be?

carlos salvidres: can a 1979 honda cb650 cdi, be repair

Giic Llc: I enjoyed your video, Hay mer, Love it!

Stan Wilhite: Out of curiosity what does "CDI" stand for?
Thanks for the vids!

DENNIS SBRUSCH: I have a kazuma 110cc lacoste quad. Took panels off to repaint and after putiing it back together, it no longer runs. It ran prior. It cranks over and is getting fuel, but will not start. How do i test ignition switch, coil, cdi box? and do you have a wiring schematic print that shows me wiring? It is possible I have battery wiring wrong. im not sure as I do not have a troubleshooting /repair manual. I could sure use your help. Please send me any repair/diagnostic manual info, etc. that could help me trace and find the problem that it is evident, I caused myself. I bought this lil quad new for my daughter when she was 12 in 2005, and only ridden for about 50 hours b4 being parked in barn since 2007. I am trying to fix back up for my grandsons. And also for my nephews 2 boys when they all come visit me out in country where i live. I am disabled and working on this quad is a good thing being it helps me physically, mentally because of my spine and spinal cord injury that has disabled me and am proud to have great family. I just created more problems causing it now not to run! lol!!! thanks again - Dennis
my email id - 1racetrans@gmail.com

Thank you again and God Bless you

Stavros pro: Its not that hard to kick start if you use the compression release....

superemposed: Does the CDI have any influence on the advance and retard? If it does, how does it control this?

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