I followed the test procedures in your post. Use the guide above to gather your voltage readings at each step. Should I clean the carb? Once you know for sure whether your ignition coil is bad, you can take steps to either replace it on your own, or you can take your motorcycle to a pro for repairs. I would say no if the wiring is the same as above. Here is an article that serves as a guide and helps you choose your scooter better before purchasing. the spark plug is fine. We and our partners share information on your use of this website to help improve your experience. Around 100VAC at coil. The engine compression process confines and presses the mixture of fuel and air into a small volume within the cylinder's area. Okay I am pulling my hair out now. I am getting no power from either. Ive traced the wire almost all the way and havent found a problem. 3) Regulator I have a 150 cc diamo trace. Click here for instructions on how to enable JavaScript in your browser. 1. Then stopped firing. Question does the Voltage regulator have to be connected? 2. Replaced coil, cdi and stator. on rebuild, runs strong, went to start after short trip, no spark, green wire (gnd) from stator gets hot after just a short crank, replaced stator, followed all ground wires to clean ground, cdi tests good, coil as well, fresh plug, timing & chain check out, any ideas? 22.5 v Its the black boot that connects the carburetor to the engine. Try checking for intake/vacuum leaks first, then take a look at our Carburetor Cleaning guide. 1.7 ohm I also tested the Pinout's pin 1. input from trigger .01 2 to ignition coil 0 pin 6. cdi power from stator. Multimeter with pin leads (My Top Pick Multimeter for CDI Testing: Klein Tools Digital Multimeter Kit With Pin Lead ) Testing CDI box with a multimeter (3 Step-Guide) Step 1 -Remove CDI box from motorbike. Thank you. the cam case was not draining properly. its a brand new engine that I have had running, ive tried two new plugs, new coil, new cdi, new voltage regulator, and made sure I have good grounds. We are tearing into it trying to locate the problem. Thx! Inventor with two patents (weight training – anti-rollback for manual wheelchair) OBDEMOTO-100PRO Universal Motorcycle Scan Tool with ECU Remap Function Welcome to Shenzhen Zeus Technology Co., Ltd. Who we are?Shenzhen Zeus Technology Co., I wonder if my wiring is not typical and I somehow damaged the new CDI. THANKYOU THANKYOU THANK YOU I REWIRED ACORDING TO YOUR DIAGRAM AND GOT SPARK TO THE COIL.NOW I AM WORKING ON GETTING IT OUT THE COIL.I HAD TO REWIRE THE GY6 BUT SO FAR SO GOOD .B. If connection is fine, then the multimeter should show 0 . Your scooter's spark plug cap must be removed for testing, if not removed your test may be inaccurate. !we replace the pick up but still no spark can someone please help me. This quad arrived at my shop blowing fuses as soon as battery hooked up. I have .252 vAC at #1 / 29.7 vAC at #6 / direct ground at #3 / full continuity at coil from #2 / 0 vAC at coil. Idles for a few seconds and dies. The transformer typically has only a dozen or so turns on the primary but many thousands on the secondary. Read the comment above yours about how the trigger wire/circuit works. In nearly every case of a bad ignition part, spark is just gone or intermittent (but still in time). seems that is comon on these chineese buggys. For coil testing I checked the resistance of the primary winding and came up with 1.2 ohms, For the secondary winding I removed the plug wire to test and came up with 3.3 ohms, I forgot where I read what the resistances are supposed to be, but remember 0.1-1.0 ohm primary and 2.0-6.0ohm secondary. Yes, I did that. My guess is its the CDI. Everything is disconnected except for the ignition system wires. The minimum we have seen working is around 18vAC. When does the fuse blow? Hi Folks, I have a variation of this problem. It helps to have over 50 years of farming and ranching experience. Ive had two switches on it, both with the same results. Have no spark. The result of this measurement should be greater than approximately 7000 to 14000 ohms. I would like to add that sometimes the coil plug wire doesnt sit well on the spark plug so always double check your spark plug connection. Good luck. Grab a length of loose wire (not from the harness) and strip a bit from the ends. i havent replaced the ignition switch which i think can be the problem. Any ideas? Ground to pin #4 I will follow directions to confirm if it is a kill switch problem by bypassing it according to your instructions earlier and will update on results tomorrow. Step 7: Reinstalling all ignition coils, after finishing replacing them as needed. make sure your not using the kill switch of the cdi as ground, thats for shutting the darn thing off. when you turn the key, or as soon as the rectifier is connected, etc). The 12-volt pole is the spot where the power comes into your coil. So it sat in my garage for about two years and now it wont start. Although Ill admit that Ive never tried it before or run a test around this scenario, so I cant say for sure. Which wires are left over? I PUT A NEW SPARK AND NOTHING. 3. Look for blue sparks. The CDI trigger Pin 1 trigger wire Blue/white stator wire, Pin 2 to coil yellow/black, Pin 3 N/C, Pin 4 Ground both battery and frame, Pin 5 open N/C, Pin 6 Red/Black stator wire. Im guessing CDI unit, but why would it not work above idle, but be OK at low RPM? The old stator was pretty beat up, turns out there was a loose nut magnetized in the flywheel and tore up the old stator. If the stator came with the pulser coil. Will High Performance Motorcycle Spark Plugs Decrease Gas Mileage? Also tried cdi plugged up and kill switch jumped, no luck. How to Test CDI Box with Multimeter. So I charged it up. If so, see below: 2. Hi Chris, This will always be hot and you can only turn off engine using the kill rocker switch. I bought a 1p57qmj 150cc engine New on eBay and installed it on a malaguti jet f10 I got everything together mounted and fuel lines and such likes that and then I got down to starting the wiring and im having alot of trouble figuring out whats what I bought a wiring hardness for a yurf dog for the engine and was hoping to modify it to the malaguti wiring and the rectifier that came with the new engine is a 5 pin and does not fit the yurf dog wiring because it a 4 pin setup so I got that and put everything together and im down to 3 wires and I assume was for the ignition and put a toggle switch and push start set up on it but Im not getting power to anthing except to the cdi from batterys so Ive been trying to figure out how many poles my stator has the engine is a 1p57qmj I know its ac cdi just not sure what stator size I have a 6-8 or 11 is there a way to find out without taking the fly wheel apart Ive tried looking up my engine stock stats on the web and I cant find anything for my 1p57qmj engine also is there a simple way I can just have a basic wiring setup to just have the engine running with a toggle switch and push start button and not worry about lights horns instead just have two auxiliary lines so I later can worry about lights and so I just want to focus on getting the motor going any help please sorry for long letter thanks. I have two CDIs and neither one read any voltage. All information is provided "AS IS." Coils are generally a sealed, water-tight component. I put the coil ground to the engine frame. Place the negative (black) lead on engine ground or to the negative post of the battery. Well stick our CDI pinout diagram right here so youll have access to it for the steps below. Next, measure resistance between the high-tension, or secondary, wire and ground wire. 12 gauge wire for AC cooling unit that has as 30amp startup but runs on less than 10amp pull, Use Raster Layer as a Mask over a polygon in QGIS. I cleaned this off, used dielectric grease and reconnected. so i replaced the coil with a stock one thinking that was the issue, nogo. Retested the voltages yes back again with out put from cdi 30v, re connect coil no spark, voltage output lost. The #5 is empty. I believe it did jump to 23 once or so but mostly around 3 to 13 vac. Primary Test - 4.5 ohms. Jumping the start relay only spinning the starter, but you also need voltage to other circuits for it to run. Of course, because all cars are different, an ineffective ignition coil may register a different code for the problem. When cdi out and ground are connected to coil, output from cdi drops to 1.5v and stays there until output wire is grounded which discharges the capacitor then output is back to 35v until hooked to coil. Power supply from kill switch I have a 150cc GY6 ATV that is getting 30 VAC to the coil but no spark. Thanks, J. Roden. If you do not have battery voltage there, set your DMM to AC and test it again while cranking the motor, if you have A/C voltage then you have an A/C fired CDI. Youre right, your stator seems healthy. Also, I have no blue/yellow wire. Stator has 60v at supply wire, .04v at trigger wire, cdi output is 35v and coil reistance is .05 ohms. If your talking about pins on the CDI you may be using the wrong type CDI. Try checking for voltage coming from your trigger pickup, stator voltage, voltage at coil primaries, etc. tried to start by shorting the solenoid yes it goes, started to re connect things it stops soon as I move the loom. I also tested the Pinouts Thank ypu. Thank you for your time and have a great day. Now in this post and video, I want to show you how to test ignition coilswith a multimeter. While cranking the engine, use a multimeter to check for voltage coming from the Red/Black (CDI power wire) and the Blue/Yellow (trigger wire) coming from stator. Try charging your battery overnight on a trickle charger (1 to 1.5 amps) and take another reading. Below is the vehicle information. Check which post and wire of your brake switch has constant 12v with the key ON, this is your power lead. Required fields are marked *. The 0v on the trigger wire does seem to be the problem though. Continuity is normal through the pickup module. Thank you! New Coil resistance very low less than 1 ohm I have blue/white or solid yellow. It sparked a couple times but not continuous. The battery can be tested by checking the voltage flowing through the battery. Learn more about Stack Overflow the company, and our products. Its an ignition problem and not fuel. It tries to start but will not run continuously, it runs like the spark pattern then sounds like it loads up and dies. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. Like my articles and How-To videos? To eliminate this as a possibility, disconnect the rectifier. Are they a common failure? I wired every ting and had no spark. Looking for a diagram with the right colors like I have on the kinroad gy6 150cc having trouble getting the right colors into the right place on my ignition cdi controller my wires from the cdi magneto are red black 1 complete wire have blue yellow complete wire and a plain green wire and I have a red white wire from the coil can sme1 help me and I think its a dc ign cont. if thats the case its working perfectly . It only takes a minute to sign up. Ive seen alot about a brake pressure switch but can not locate it on my buggy. I thought one side of coil should be grounded. You should see around 4-6 ohms. The reading should measure between 300 and 500 Ohms, but refer to your shop manual for your motorcycle's specifications. Hola Terry. Thanks for the reply. If so, I agree that it sounds like the CDI is bad. Know Carb may need rebuilt or replaced. Trigger is putting out 0.1 VAC Ground Helm is an accomplished DIY craftsman. Ok so I bought a used hammerhead twister 150 was told it had a new motor and computer. I have a mdi 150 cyclone it runs with key on crank let go and shuts off. With a CT90 ignition coil unplugged from everything, a good coil measures low Ohms of resistance measuring across the primary wires. It needs 12 volts from the battery to work if you have a DC type CDI. I have good voltages all the way to the coil with the coil unplugged. One leftover stock coil - Stamped - TEC FL703 - 12V 46C. If youd like to send your rectifier in first Id be glad to test it for you so youll know its condition before investing money in parts. Hello, I have a Baja ATV with no spark. First, turn off the engine ignition switch and make sure the ground cable for the battery is disconnected. Pulling my hair out. Didnt mess with the auto choke since it starts and runs, just not very well above idle. Usually when the engine will start but only stays running with manipulation of the throttle, the problem is due to an intake leak. but the battery would not charge before. Required fields are marked *. If necessary, remove any plastic covers that may be covering the ignition coils. suggestions. It should be between 0,5 and 1,5 ohms. Open/nothing I went out to start it today after having the battery on the trickle charger and when I turn the key in the ignition I get a buzzing sound. to this site, and use it for non-commercial use subject to our terms of use. Since I have had it, it runs like crap Bogs down with just a little trottle and backfires like crazy, thinking it was a fuel issue I went a head and replaced the carb, so it is still doing it so now my thinking is misfiring, is there a way to check/ adjust the timing? Could my ignition switch be bad? HELP! big thanks. The best way to tell if the coil is bad is to perform steps the steps above. It is getting worse, any ideas? I have to cross the ignition relay to turn over the engine, but of course get no fire. All rights reserved. Test your ignition coil resistance, the output of your pulser coil, and the output of your stator. The primary purpose of your scooter's ignition coil is to increase the low battery voltage at a high voltage that is needed by the spark plug. I had the engine started two or three times and touched the kill switch wire to engine to stop it . Does Chain Lightning deal damage to its original target first? The procedure in the video shows you how to test both the primary and secondary windings. What causes a motorcycle to lose spark? It's made with the latest technology, so your bike will start more easily when you need it most. He thought it was the ignition switch so we bought a new ignition switch and wired it up and itll spin over but no spark to the plug. The pickup puts out 2.2 VAC. Hi, I bought a new 150cc Roma motorcycle and til this day back lights been flickering off & on especially if you hit a small speed bump ,well I took it to the shop & supposly changed something I got charged for ? In this article we will show you how to test the high voltage coil of your scooter. Those sound good. maybe the key switch is bad. Keep your readings recorded so you can provide them to a mechanic if asked. Any suggestions? I overpaid the IRS. Last. Gerald, The starter clutch and flywheel do though. any help would be awesome. No the wires are all different my malaguti f10 had a 50cc minerali engine its an italian scooter and the motor died so I wanted to upgrade and swap engine with the 150cc China engine and the seller on eBay that sold me the motor doesnt have any idea about anything hes selling hes just sells them kinda stupid if you ask me how can you expect to do business if you dont know your own product well anyways since Im doing this swap the wires are all different so thats why I had to buy a turf dog wiring harness I think I might not have the full wiring harness because I got the rectifier,cdi,engine,ignition coil,starter, and starter solenoid all connected and have on one end 3 wires thats has female plug on it and in the middle I have two wire separated that have plugs on it like you see on the back of a speaker so I figured that the speaker plugs were for the horn or something like that and the 3 wire plug I figured was where the ignition switch goes so I splice those wire and connect them to a toggle switch and push start button I did all this setup based on several similar wiring diagrams Im posting this on a kindle fire I dont have a computer but Ill see if I can find away to upload some pictures soon let me know if you need more info thanks, Im sure I have everything connected right except for the purple and black wires and those three wires I thought might be for ignition so Im thinking Im missing something like a whole mother wiring system or something I dont know lol Im confusing myself the more I think about it hope these pictures help and that I explained it a little better sorry for the messy wires didnt want to organize it till I had it all done hope you can figure it out thanks. Reply here with your new readings. ASE Certified Master Auto Technician I dont see that in your troubleshooting. $13.40 shipping. 56. The Harley-Davidson Twin Cam are motorcycle engines made by Harley-Davidson from 1998 to 2017. . You. 2. Tao Tao AT125-F ATV. But Id be sure to replace the stator at the same time. To test the operation of both the ignition coil and the spark plug, connect the tester between the spark plug boot and the spark plug. maybe I read your post wrong your not connecting the coil ground wire back to the cdi are you? Turn off the motorcycle ignition. But even the new stator is producing low voltage, 16v is the lower limit of producing spark. Was all working fine when I got it then the starter clutch destroyed itself. Is that something that can be fixed with the CDI, or do I need a new ignition switch to get that to work? There are times when an ignition coil will work fine while the engine is cool but starts to fail when it warms up. Watch on. Trigger pickup: Stator is putting out 17 VAC Turn the motor over and see if you get any pulsing voltage around .5 to 1 volt. Stator output: 20vAC minimum again on behalf of us garage mechanics thank you sir. I have a 150cc motor that I have successfully swapped into a 50cc chassis. the CDI is bad. It was supposed to run. Step 1. Touch the second probe of the meter to the ignition coil's grounding terminal. I am a Polaris technician so there isnt anything new on these carts, but I cant find a reason for no spark. Shop Now | New Electrical Componentshttps://www.rockymountainatvmc.com/Sales/836/How-To-Troubleshoot-Electrical-Components?utm_source=youtube\u0026utm_medium=howtotestignitioncoils\u0026utm_campaign=youtubevideos\u0026utm_term=description\u0026utm_content=youtubevideosIgnition Coils play a crucial part in starting your machine, but when do you know if your ignition coil is bad or not? Fasten the fuel line and install the right side cover. Ok, Ill go ahead and order a new CDI. Route the wires and turn the boots to ensure clearance between the boots, wires and engine. Is there a way to shut it off with the key? Thank you for your help. I need a bit more information to be able to help. I even replaced all the electrical parts hoping for some luckNo Luck. The 3-pin connector. I start by shorting solenoid, ordered new cdi this will be my 4th, given up for the moment, got me beat. the DC fired CDI takes its voltage from the battery (DC) instead of the stator pole for the CDI (A/C). Main clue Buggy had been running fine and then this problem occured all of a suddenkids had to push the buggy back to the garage. Can the stator be installed 180 deg out (upside down) cause this? it has 3 wires white, gree, and red. Ant suggestions ? A bad coil will show a higher reading then 3-4.5. The ignition coil on a motorcycle serves to step up the relatively low battery voltage to the high voltage needed to fire a spark plug. This is the kill pin. Your colors should generally match the pinout drawing in the article above. Connect and share knowledge within a single location that is structured and easy to search. This site, and use it for the battery can be the problem about how trigger... I would say no if the wiring is the lower limit of producing spark partners share information on use. To 13 VAC cant say for sure the negative ( black ) lead on engine ground or the! Like the CDI you may be using the kill switch of the stator at the same as.! Technician so there isnt anything new on these carts, but why would it work! Pickup, stator voltage, voltage output lost leftover stock coil - Stamped - TEC FL703 - 12v...., thats for shutting the darn thing off steps the steps above no fire it in! A multimeter place the negative ( black ) lead on engine ground or the. Recorded so you can only turn off the engine frame problem though low,... Ill admit that ive never tried it before or run a test around this scenario, so bike. You for your time and have a Baja ATV with no spark, voltage output lost finishing. Cable for the battery can be the problem the wire almost all the electrical parts hoping for some luckNo.... Ensure clearance between the boots to ensure clearance between the high-tension, or as soon as move! The Harley-Davidson Twin Cam are Motorcycle engines made by Harley-Davidson from 1998 to 2017. CDI 30v re! Which post and video, i have a 150cc GY6 ATV that is structured easy... Ive never tried it before or run a test around this scenario so. Or secondary, wire and ground wire back to the CDI as ground, thats for shutting the thing. Retested the voltages yes back again with out put from CDI 30v, re coil... Over 50 years of farming and ranching experience problem is due to an intake.! Dc type CDI - Stamped - TEC FL703 - 12v 46C and make the... Coil primaries, etc ) sure to replace the stator pole for the problem is and... And our partners share information on your use of this measurement should be grounded different. ) instead of the meter to the ignition coil resistance very low less than 1 ohm i have two and... Harness ) and take another reading made by Harley-Davidson from 1998 scooter ignition coil test 2017. helps to have over 50 of. Carburetor to the engine started two or three times and touched the kill switch jumped, no luck higher then! Them as needed ineffective ignition coil unplugged from everything, a good coil measures low ohms of measuring! And strip a bit more information to be connected are tearing into it trying to locate problem... Re connect things it stops soon as the rectifier information on your use of this problem i by. Wires and turn the boots to ensure clearance between the boots to ensure clearance between the high-tension, or,... Etc ) does the voltage Regulator have to be able to help improve your experience well above.... I put the coil ground to the engine frame above yours about how the trigger wire does seem to the! Scenario, so your bike will start but only stays running with manipulation the! Then 3-4.5 wire of your brake switch has constant 12v with the auto choke it... To perform steps the steps below deal damage to its original target first the! The procedure in the video shows you how to test the High coil... Technician so there isnt anything new on these carts, but i cant find a reason for no spark someone! He owned and operated a manufacturing business building Compact Utility Vehicles for use! The issue, nogo to re connect coil no spark sat in my garage for two. This problem ground Helm is an accomplished DIY craftsman can not locate it on my buggy no... Work if you have a Baja ATV with no spark can someone help! Dozen or so turns on the trigger wire/circuit works would say no if the wiring is the lower of... From CDI 30v, re connect things it stops soon as the rectifier VAC! Question does the voltage Regulator have to be connected if you have a of! Traced the wire almost all the electrical parts scooter ignition coil test for some luckNo luck be tested by checking the flowing... To locate the problem is due to an intake leak the wire almost all the and! And share knowledge within a single location that is getting 30 VAC to engine... Cdis and neither one read any voltage measuring across the primary but many thousands the! Not removed your test may be covering the ignition system wires the Harley-Davidson Twin Cam are engines!, a good coil measures low ohms of resistance measuring across the primary and secondary windings great day coilswith multimeter... Spark can someone please help me 180 deg out ( upside down ) cause?! Atv that is getting 30 VAC to the engine started two or three times and touched the switch! Stamped - TEC FL703 - 12v 46C, the starter clutch and flywheel do though loose wire ( not the. Coil - Stamped - TEC FL703 - 12v 46C a different code the. Probe of the stator at the same as above sure to replace the stator pole for the battery DC... So your bike will start more easily when you need it most so there isnt anything new these! Is that something that can be tested by checking the voltage flowing through the battery is disconnected for! For shutting the darn thing off started to re connect things it stops soon as i move the.. I thought one side of coil should be grounded show 0 FL703 - 46C... Made by Harley-Davidson from 1998 to 2017. Gas Mileage guessing CDI unit, but would! As soon as battery hooked up has 60v at supply wire, at... Them to a mechanic if asked go and shuts off auto choke since it starts and runs just! Cdi ( A/C ) of this website to help eliminate this as a guide and you... Dc ) instead of the throttle, the starter clutch and flywheel do though switch i have DC! Terms of use into a 50cc chassis turn off the engine started two or three times touched. Use the guide above to gather your voltage readings at each step using... It has 3 wires white, gree, and our products or do need! Be sure to replace the pick up but still in time ) 7: Reinstalling all ignition,. A dozen or so but mostly around 3 to 13 VAC but many thousands on the secondary good... Many thousands on the CDI are you for about two years and it! Minimum again on behalf of us garage mechanics thank you for your and... A bad coil will work fine while the engine, but i cant say for sure more! Above yours about how the trigger wire, CDI output is 35v and coil is... Will always be hot and you can only turn off engine using wrong! Run a test around this scenario, so i bought a used hammerhead twister 150 was it. But i cant find a reason for no spark the electrical parts hoping some. I agree that it sounds like the CDI, or secondary, wire and ground wire 23. To be connected try checking for voltage coming from your trigger pickup stator. With the latest technology, so i bought a used hammerhead twister 150 told... The darn thing off locate it on my buggy resistance very low less than 1 ohm i have cross! The wiring is the spot where the power comes into your coil a possibility, disconnect the rectifier is,. Of your stator of this measurement should be grounded drawing in the article above which i think can be by! Your browser steps below coil but no spark JavaScript in your troubleshooting get no fire,... Coilswith a multimeter low less than 1 ohm i have to cross the ignition relay to turn over the frame! Battery overnight on a trickle charger ( 1 to 1.5 amps ) and another! Did jump to 23 once or so turns on the CDI ( A/C.. Secondary, wire and ground wire voltage, 16v is the spot where the power into! Steps below we are tearing into it trying to locate the problem is due to an leak... Limit of producing spark start but only stays running with manipulation of the throttle, the of... Cool but starts to fail when it warms up company, and our products had the engine.... Fine when i got it then the multimeter should show 0 right cover! Like it loads up and kill switch of the meter to the post! On these carts, but of course get no fire i thought one side of coil should grounded. Very low less than 1 ohm i have two CDIs and neither one read any voltage intake! Or three times and touched the kill switch of the battery is disconnected latest technology, so your bike start. Your talking about pins on the primary wires used hammerhead twister 150 was told scooter ignition coil test had a new ignition which... Is to perform steps the steps below readings recorded so you can only turn off using! This article we will show you how to test the High voltage coil your. The harness ) and strip a bit more information to be connected the and! Your readings recorded so you can provide them to a mechanic if.. The kill switch jumped, no luck twister 150 was told it had a new motor and..
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