No Spark? Won't Start? How To Test and Replace The Magneto Coil 2 Stroke Motorized Bike
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- Опубликовано: 7 авг 2024
- The Magneto Coil is the number one part to fail causing no spark. Here's how you test and replace your coil. It's not hard to do. Having some special tools help but you can do it w/ basic tools.
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1/4″ Phillips driver Bits - amzn.to/3uAmDhT
Hand Impact Tool - amzn.to/3bIUa0P
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Coil Assembly - amzn.to/3pS1BIc
hughesmotorized.com/magneto-c... 
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I watched 3 videos I feel like a pro now thank you so much you are a huge help
I'm doing this on a 2011 Kawi Kx100dbf but Imma try and Re-Interpret your Scooter Formula to this Beast! Great Video! Keep em Coming! With love from Gulf Shores,Alabama!!!~ Roll Tide~
I just found the best all around how to/diy RUclips guy. Thanks man. You really are easy to follow with your instructions. I hope you have more videos on these bikes. I'll be set ....bet.
Please help me man I have a 2-stroke bike engine and yesterday my electric wire kind of got melted by the muffler so I try to fix it but now my sprocket my chain or fine my throttle is fine but the more I rub on the throttle nothing happens my bike was not move my clutch moves but my tires will not move what do you think it could be
Will my wire for electric current not be sufficient enough tight enough that it's not getting enough power please help thank you
I can release the clutch and it'll start but when I rub the throttle it makes the noise but nothing no movement
@@frankpulkowski4842 is your throttle cable pinched?
Thanks for the info.Wasn't sure of the Ohms.6 Years of the bike and You're the 1st person that said to use RTV to seal the wires.I did that as I saw the water would run downhill and right in.You'd think others would say so too.Subbed a couple days ago as I like your vids.TY.
This is the man when it comes to moterized bike. He’s unbelievable!.
Thanks for the info. Much appreciated.
I performed all these tasks and it fired up like a charm! 3 rides later I believe I blew the motor. Tearing it down and pulling the head to inspect
You're a great teacher thank you
Thanxxx. I appreciate that!
helping me out again, thanks man.
Glad to help
Just found you on RUclips. Fantastic , wish I was your apprentice/neighbour. Cheers
Nice job thanks
Gotta love the 'down to earth presentation , I happen to live there too.
Where do you set your meter at the test like the magneto and the CDI coil this is like and 2 or haven't tried it but I don't know nothing's working right so brand new meter too I need to test all these out to make sure they're good thank you Bob
Always great to hear your thoughts and tips. Love your advice. Keep up the top quality work.
I appreciate that!
Very very very excellent I like it
This was the best video for this problem no joke
thanks
Dude thanks! You are awesome!
Glad I could help! tHANXXX
Love your vidios bud! Thanks for sharing your knowledge friend!
Glad you like them!
@@HughesMotorized What is the best Ohm reading to look for? A larger number or a lower number of Ohms?
@@DirectCurrent4u 280 to 340 is good. Don't know which is better if either as it simply charges up the CDI capacitor
@@HughesMotorized Thanks for your reply!👍
I recently bought a new magneto with 3 wires w,b,blue, but upon installing the blue wire snapped off the solder can I use the white wire in place of the blue? Or shoulld I attempt to solder it back on and remove the white wire?
Your the best 🏆
Hey I see you still replying to people thanks for that, I was just riding my bike it ran out of gas but before that it ran itself at max revs until it ran out of gas now the engine won’t start even with a new spark plug, do you think I killed the engine or do you think replacing this whole assembly will fix it ?
One thing that wasn't mentioned when you reinstall the magneto is there a right or wrong side to.install it? I noticed you can flip it over and it still screws in either way let's call in front and back. Let me know.
can i drill bigger holes for those 4 screws that holds magneto ? those original holes won't allow me to adjust it properly without it
I love it ❤
Very usefull video as always. If i replace the standard 6volts magneto coil with a 12volts magneto coil, it will damage the cdi?
shouldnt cause any issues
I got a question I bought the 80cc 2 stroke engine kit for my bike but when I'm testing for spark with the spark plug the no spark everything is brand new
my ohm reading for my magneto is 264 ohm do I need to replace it?
Hello just wondering if you could help, there's no sounds of life coming from my engine, I'd recently bought the 80cc kit set it up correctly and there's no sound of life please help
What happens if you do not have good current running through those wires with the engine still start or not start because my engine starts but when I rub on the throttle I get no movement whatsoever
You're the Man!! I learn everything I learned from you.😎✌💯
Glad to help
Thanks
Welcome
my coil white tape stuff is brown so what is leaking on it? how do i stop a leak into that chamber
What kind of repair shop are you ie ( pushbike repair or auto motor repair )
my motor is only making really weak spark at really high rpm like i can ride the bike around holding the plug and it feels like its tickling me. i tried 2 coils, 3 CDI's, cut off all connectors and twisted copper with electrical tape to test, gapped the coil every way possible, nothing made a noticible difference. Tested both ccoils both 330-340 ohms. couldnt even get the motor to cough with fresh fuel straight in the cylinder. really strage. i have two of these motor kits and both do the same thing. what am i doing wrong
Checked everything. Bad loop, or coil. Thanks.
I,d like to know if I rewind the coil with a thicker copper wire will it effect the amp out put given the same magneto set up , and is the CDI only rated to take the current passed to it by the standard coil supplied with most engine kits ?
I've never tried that so I'm clueless
I never even checked the spacing on the magneto, Go figure one side was pressed against the magnet. I bet that might have been a problem come first start up Tomorrow. Thanks man!
So I bought a pull start for my setup I don't think the nut was tight enough and on my very first ride the nut came busting out of the pull start case and I believe it bent the magneto and the magnet the magneto goes around because I can't get the correct gap on the magneto.has anyone had th I s happen?
I had bad magneto the first time I bought the bike motor so I bought 2 more and still they where both bad getting up on this
I have to ask for the magneto can you save it
When it comes to the magnet does a gap bigger on one side than the other make a difference I have replaced the plug cdi and magneto and I'm still not getting very good spark any help would be very greatful
Use a business card to space it out before tightening.
I'll ride my bike today and it cut off on me it boiled down and it won't say anything can you tell me what's wrong it's the only transportation I got to work and back
Thanks man. My bike is a daily runner and I didn't know that I have to water proof those magneto wires. The you're recommending, can I get it at a hardware store?
Yup. Silicone RTV sealant
i dont get how to take the wires out you said cut them but then how do you retie them in
Hello, I bought a bike awhile back and started having issues so I purchased a new cdi box, it's getting spark but won't run. when i let go of the clutch and give it gas it runs for a second doesn't rev up and just shuts off. I have bought two new carbs already and would hate to put even more money into it, anyone got any ideas?
Can you tell us the name of that bottle for rtb silicone because I'd like to get some plus I can't find it any other AutoZone store please and thank you
This clear will do fine. amzn.to/3C21Rxd Avoid the black and red as it will be hell to remove in future repairs
Nice video as usual helped me out a lot :- )
You made a comment about the chain coming up and not being aligned properly I noticed something quite a while back while all the chains on everything else have the ends of the little studs through mushroom which is why your chain doesn't come apart on your 10 speed or something when it goes up and down the gears and it's not aligned properly all the 415 chains I ever got for my motorized bicycle we're not mushroomed on the ends of those little studs except the last ones I bought which were once I figured that out and in my case I didn't have anything better so originally I took a pair of channel locks Anna went for link to link and grab them little studs set it on the concrete smack the channel locks couple times mushroom dens of them a little bit never had a chain come apart again and my stuff was not aligned properly it was lined well enough that the chain didn't come off of the gear but other than that never had a problem the one that I got put on my bike here a while back actually came slightly mushroomed on either end of them studs and I haven't had a problem with it just thought I would tell you that because everybody says it's because you ain't got your chain lined up exactly correctly and if that was actually necessary Chains would be breaking continuously on bicycles that have gears like 10 speeds and mountain bikes and they don't and if you look at the chains on motorcycles and mountain bikes and stuff all them little studs are all mushrooms on both ends slightly when I and well so far I told a bunch of people that and nobody believes me but the fact is that I took a chain off a like 2 years ago that kept coming apart every freaking three or four blocks you know and I did that to it with the channel locks and after that I wrote it for most of the year with no problems at all until I got covid pneumonia ended up in a coma and a friend of mine dismantled my bike while I was unconscious but that's another story when I when I started mushrooming them studs so I stopped having a problem with my chain coming off so if you haven't picked up on that I I would suggest that you should at least check out what I'm saying you know so inform your own opinion cuz if you look at all them other change you'll see that there they are mushroomed and for that matter since you do this sort of thing I wouldn't mind if you tested it to see if you have the same experience with that that I did you know because I'm only one guy and if you test it and get the same result then we'll know that I'm not just lucky
I have spark but bike wont start could it be the magneto or cdi? I thought it was the carb put a new one on and still wont run
No spark on mine. Tested the ohms and it came up .2. Not an electrician but does that mean I need a new one? Thanks for the awesome video! Just picked up this bike at a yard sale!
Most likely. should be in the 300ohm range
@@HughesMotorized haha when I first started working on it I thought the white wire was a ground. When I realized my error cuz of your video, I cut it, and it worked like it should. Now I think I'm on to either carb adjustment, rebuild or replace.
@Hughes Motorized I'm reading 0.32 is that good ?
is it possible that these coils will worn out, i have spark but its poor
Hi can you help me I have changed the coil over on the magnito and the cdi and spark plug and I am still not getting a spark any ideas would be very helpful
Did you fix it if so how
@@EliWagnon no never managed bro ended up with new engine lol still to this day have no ide why it would never work lol
What size inches or metric mm Woodruff key I use for holding magneto magnet
Metric. 10mm wide. 4mm tall. 3mm thick. Video coming
You were right on the money, those things always go bad, and I just brought that one! Smh
Can the magnet it self be bad
So i stripped the nut that holds the actual magnet. Im not sure if its the nut or the crank bolt actually but could this be a possible reason for my no start? Ive gone through three different cdis and bought a an ngk spark plug and nothing so far
Might be the issue
@@HughesMotorized why would this cause an issue tho
My 80cc motor won't start it's brand new all the wiring and everything's all new it's getting great spark and everything it just don't want fire up what's the problem can you help me Bob
Pretty sweet! Definitely learned something
Glad to hear it!
What problem can be expected if magneto slightly rubs ??? I did spark test touching plug to head bolt. I have spark. No kill switch. Still no start
Rubbing is not ideal. However no reason for no start. Loosen coil and insert paper on the top and bottom between magnet and coil then tighten screws. Check if getting gas on plug after trying. See this video for more help ruclips.net/video/3iMnV8K_Xag/видео.htmlsi=reK3zkXLM1Ly349u
Ok.... one more thing for me to check. Just one question, I already have a spark tester, the thing you screw in place of the spark plug to see if your getting spark? If that checks out does it mean my magneto is ok? Or do I really need to go get a digital multimeter and do what you did?
If you are getting the tester to light up, then you good
@@HughesMotorized Ok, thanks. I think I'll pick up one of those testers like you showed anyway. Just not off amazon. (sorry, you probably make something but I hate that company. Anti American they are.)
@@artmakersworlds I getcha. I'm actually moving to linking up on eBay over Amazon. At least w eBay smaller businesses make a little more.
@@HughesMotorized Just don't make the mistake so many on ebay do, (quite common now actually.) Pawning off Amazon goods through ebay. It's against their TOS (though kinda hard to find even if looking for that.) But it is. I will return anything that comes from amazon if I went to ebay to buy it. It's a cheat and I won't have it. Gees I even ordered something from walmart and amazon shows up. People need to wake up before amazon owns everything.
What is the white wire originally for please thank you
it can provide 6 volts for an LED but it robs power from the spark so fugget about it
I had a issue once, when the manufacturer put the woodruff key in upside down (moon facing up) once they place the magnet in then ran the nut in with an impact, it jammed the magnet and it was impossible to remove the magnet without damaging the magnet
OUCH. they get sloppy sometimes huh?
@@HughesMotorized yeah..but I have noticed over the years, it really doesn't matter what kit you buy or from who you buy it from, all engines have some type of error or flaws right out of the box..
Ok I have done every thing you have said. My magneto at tdc is at the one ocloock position the magneto cut out is level with the motor. Spark plug is good,i got numbers coming off the magneto loop at 300 sumthing black wire to the red wire on my ohm meter. Ive cheecked the boot to see if its good its good the plug wire is good. Im going insane. Now im no slop. Ive built four gas bikes and ive put a 212 on my bike. Help me please sir.
No spark? Remove the plug and put plug into cap. Push bike and grab plug while pushing. If it shocks the crap out of you and you are cussing me then you have spark.
Ok I have done all the stuff that you are supposed to do. But im nerding help beyond the normal I Believe
What size wrench is needed for the magneto cover?
3mm allen
How can i PUSH IN the Magneto Magnet can i use a socket with a rachet tap the sides lightly what Tool can i use
Should just easily push on
so what happens if theres no gap in the magneto and it scrapes? does it wear it out?
Not good. loosen screws on coil and put a business card in to set gap equally
Can I use one off my push mower for bigger power
My first build
I like lights
How do you know if the magnet is installed correctly & not flipped around, I took mine off & not sure if it's correct side?
When the piston is at the top of the stroke (TDC), the key or notch is at the 1 O'clock position
@@HughesMotorized Thank you !!! 🙏👍
Ако е обърнат ще запали ли
what chemical can i use for cleaning rust for the Magneto Magnet
gas & oil, paint thinner. WD40
I was riding and the bike stopped working, it sounded like pressure let out and now the bike won't even start at 1st it was making a whistling noise when it tried to start and then after a few moments wouldn't even start up. So now I'm stuck with a dead bike and I have no idea if it's the Magneto coil or if it's just the starter
Sounds like head gasket blew out. Check that. If so a new gasket is in order. Then you need to retorque the head nuts after 4 rides
Hey Hughes, so I'm still working on my first build and I'm pretty much done. The only problem is that I cannot get a spark to save my life. I've used an OHM meter to test every electrical component from the magneto to the boot to the CDI, ETC. I even took apart the magnet and realized I didn't have a woodruff key in there, so I took care of that I got one and put it in there. My magnet is solid in the 1 o clock position. I even went as far as buying a whole new magneto and CDI. And still the spark will not get going. I would really appreciate any and all help that you can can give me. Keep in mind I'm testing it by having the bike upside down and spinning the tire by hand
Thank you for your time
grab the plug and spin the tire if you feel fire running thru your body and hate me, then you have spark. It's not going to be real bright a spark
Hey did you figure it out mine magneto is good and I bought 2 new cdi and still no spark
Flip the magnet..it also will only work one way..
Can 50cc two stroke go up hill light rider
Should do good. 44 tooth sprocket or larger if needed
What it mines like 520ohm instead of 310ohm mines also 100cc motor
Should i take the whole thing apart and loctite ever screw?
(as new)
No need to do all hardware. Mostly the exhaust and intake. Just don't overtighten
I replaced the seal behind the magneto, put it all back together and when I went to start it, it made a weird noise and cracked the cover outward.. what did I do wrong..PLEASE HELP!
Shoot me a vid explaining what and where. hughesmotorized at gmail
Can u tell me where to get a condenser?
I guess it's called a CDI box
amzn.to/3R9rqnm
My magneto is getting 380 and I have no spark and bought a new cdi and still no spark? Am I pluggin the wires wrong? My colors on my kill switch are black and blue like my magneto and my blues go to blues and my blacks go to the blacks any clue what might be wrong
spark is usually pretty faint. If outside in bright sun hard to see. try checking spark at night. Could be a bad plug, Is magneto key at 1 oclock position when piston is at TDC?
@@HughesMotorized I’m not sure about the magneto I’ll have to check but I’m getting about 380 when I test it so wouldn’t that means it’s good? Or could it still be bad, I’m also not getting any 6-8 oms on my cdi even with the new one I bought could it be that
I always replace those + screws by Allen heads ones
Good idea
Ok now what if the magneto has 3 wires a blue,red and a black what do I'm not doing the kill switch? Can you help me out?
Post pics on my Facebook group. facebook.com/groups/hughesmotorized
Does it matter what way to install?
yes
how do i check the c d i please help good mechanic bad with electric stuff!!! thank you much much ....
I usually keep 2 new ones on hand and swap them out. I never get a reliable reading. I have followed suggested testing procedures and never gotten the same readings that indicate the expected results. Usually, a no spark issue (in order) is the coil/loop. then the spark wire, spark cap, plug and lastly the CDI
So if my coil reading 0.32 it's bad ?
Any help would be much appreciated 🙏
Lowkey didn’t think it would work but it did
You can use air and blow the built up crude after youre first ride
Water damage in my coil I fried it out corrosion I think is caused by Short circuit result in death of coil I ordered the coil and a CDI
I have spark, is it possible for the magneto to still be bad?
Prolly not the coil. If you have spark then the coil is good.
Is bike supposed to move freely with clutch not pushed in
No
I was the first and last time riding and the cables in the magneto loop burned up already.
Buy 2 more and replace. The magneto coils are hit and miss. Once you get a good one they last forever
Hey Eugene what kind of gas mileage engines get
100 - 150 per gallon
@@HughesMotorized hey thank you I've had my OCC chair prep runner for about a year now and never checked it
@@HughesMotorized I have a half gallon tank. Would that be 50 to 100 Miles per half gallon?
For our 2-stroke paramotor engines, we NEED a kill switch to stop the motor and spinning propellor. Can you explain the wiring for the operation of motor & coil and HOW a kill switch interrupts that operation (shuts it off)? I can't seem to upload my diagram here.
You don't need a kill switch I don't run one on any of my bikes just use the choke or slowly let out the clutch I prefer choke
Wjy is my magnet really weak on one side and barely strong on the other side please help 80cc 2 stroke motorized bike engine?????
Might need to change your magnet. I hear the stock ones are really cheap. I am currently waiting on my stronger magnet, performance cdi, and magneto coil. from Amazon. All together 25 dollars.
@@MattC78 yep needed a new it works now thanks! My bike wouldnt start cuz of it
Please solder the wires to insure good connection prevents corrosion.
I won't argue that too much. Great advice indeed however I'm lazy and the wire nuts allow quick replacement of cheap components that fail often. The bike has been running for 4 plus years w/ the wire nuts there. I also leave the bike outside in the elements year round. ZERO issues with the wire nuts.
Hello sir please help me i am from bangladesh, I build a motorized bicycle full new but it's not start for the first time, but I don't know what is the problem because I see all is ok, corporator is ok, and CDI collection is ok, spark plug is ok and it's also spark I test it and it working but engine is not start for any time, can you help me for start my engine for the first time, I am trying one way for studying my motorized bicycle engine but it not working, please help me I am waiting for your reply sir
Please post some pictures of the bike on my Reddit page. www.reddit.com/r/HughesMotorized/ and I will help you. Often a problem is the carburetor is not installed correctly and there is an air leak.
I TESTED MY NEW CDI IT READS 4.5 OHMS ONLY GOT NO SPARK. HELP
should be 300 + or - between black & blue. If not....bad CDI
HIGH LIFE FOR LIFE :)
I got 160-199 on my reader and no spark??
Sounds like a bad coil
I have changed three different coils, three different mags, three different plugs, nothing is happening. The only thing that has not been changed is the magnet. Could this possibly be the problem? I hear you talking about using a meter, but l cannot get any kind of a reading on anything. I just don't understand how to use the meter. Any suggestions?
I use a test light to test mags
got a new GT6 engine...no spark nothing..long story short...
the mag gap needed aligned i had some 0.01 metal around cut 4
1/4 strips loosened the 4 screws placed them two on top and
two on bottom.... budda bing budda boom ....no problem
note the trick was using a multimeter (analog) on DC 2.5v scale
squeeze the clutch rotate the clutch gear by hand you should see
an obvious deflection across the output of the mag
mine reads 32 is that good
Id say yes. perhaps on wrong setting. These new digital meters are whack ! Bet it's saying 320
i fixed that but how do you put the piston ring in the cylender head the right way is it were the lil notches are on the piston
You did not explain how to properly have the magnet aligned with the keyway
👍