Thanks Bobby. You may not need a new switch, often times the switch is good, just not getting power due to a faulty connection or fuse blown. since I removed it after and it still runs, but your suggestions were well designed and very understandable Why does Paul interchange the armour in Ephesians 6 and 1 Thessalonians 5? The ignition coil wiring can be easily accessed by opening the housing. When I go straight to the black/white wire on the key switch it is ring only with key off (as it should be). Also, I get no power on my ignition switch. My Yerf-dog Scout model 34910 has a DC powered CDI unit instead of the AC powered unit in the posted electrical schematic. It goes to your #1 pin on the CDI. I recently replaced the Stator CDI and Coil and still no spark. i pulled the plug out and it doesnt have a terminal nut on it, its a ngkcr7hsa i replcaced the stock one around a year ago, and was running fine, i dont remember if it had a terminal nut and if i am having an issue because of this missing, the ngk doesnt seem to want to stay clipped in the boot as i tried to plug the ngk into the boot with the plug out of the motor. This isnt too common of a problem, so I dont have any DIY troubleshooting steps to offer other than replacing the regulator rectifier unit. I overpaid the IRS. Any output from cdi, and no spark. The switch passes upwards of 120vAC, so the internal connections become arced over time of cycling on and off. Using the wiring Diagram I have made my own plugs and disconnected all other wires. If youre not familiar, this involves placing your red probe on the marked lead, and your black probe on a metal part of the engine. I unbolted the module from the engine block and theres continuity between the wire and the module base. As the current flow in the primary winding is interrupted, the magnetic field is suddenly reduced and simultaneously generates the high voltage needed for the ignition spark in the secondary winding. All rights reserved. Trigger wire to CDI: .5v to .1v Could this possibly be the CDI box? 2.99. Stator 17 VAC I got it they lost the key and the alarm box is missing. seems that is comon on these chineese buggys. If you keep tapping the start button you can get it to rev high. Not a fuel or carb issuetook it apart and was whistle cleansprayed jets out with cleaner anyway. Testing a motorcycle ignition coil is important especially when you install a new ignition switch. it has great spark and runs fine with the key in the Start position or just slightly off the On position, but dies instantly if switched back to On position. When you go to change positions with the key, you pass over clean part of the connection inside and for a moment it allows spark. What should the voltage coming from the CDI to the coil be? All you will need is a multimeter. The ignition system creates the spark for the ignition. Output ac voltage from cdi to coil peaks at 50 Having changed out the coil w/plugwire and changed out the CDI already this seems logical as the reason I have no spark. 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. Ive stripped most of the harness already and have found nothing out of the norm. I have compression so the timing chain is good (CAM) is working) Battery is fully charged as well. Try contacting the seller of your engine to see which type of stator came with that engine, hopefully they will be able to tell you. Note the wrapped ignition winding, and trigger module. Sounds like you hit the nail on the head. I ordered the electric tune up kit. I have fire on the wires that hook to the ignition. 1) Stator You may freely link 2. Design Engineer/Project Manager for injection molded plastic company (e.g. We welcome your comments and I dont see that in your troubleshooting. Please reply and well go from there. Ignition coil overheating: what to blame? . What is the right Stator? Ive had two switches on it, both with the same results. ALSO MAKE SURE COIL IS TIGHT ON GROUND. Has anyone seen this problem? Thanks, Terry. He farmed commercial garden produce for several years. The best answers are voted up and rise to the top, Not the answer you're looking for? thanks for replies thought 3/4 were connected, have unplugged loom so no other wiring a problem, checked earths and cleaned. Just like before: while cranking the engine, use a multimeter to check for voltage at the two primary wires of the ignition coil. Are they a common failure? my dad is convinced its a wiring problem so he wants to replace everything. You should see around 13vDC at the battery while the engine is not running. No spark. but yet i dont have any spark? Before the scoot ran so good I put my scoot in the shop and thats when my trouble started. The CDI Unit is powered by the AC current coming from the wrapped stator winding. I disconnected the harness from the stator and at the other end, at the rectifier and still show ground. Re checked the wiring which had not been altered from when it did run to find the earth wire was on pin 3 instead of pin 4 so change this. 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. How to block the handlebars of a scooter. I do not understand why this is happening. From here on well be focusing on this marked lead, and ignoring the power lead. Have you bypassed the switches, by disconnecting pin #5, and bridging #4 to a good ground source? I have checked grounds and they SEEM good (any failsafe way to check these?). 3. Yes, I bypassed the switches and grounded pin 5. Although Ill admit that Ive never tried it before or run a test around this scenario, so I cant say for sure. does anyone know how i can test it? The #5 pin can complicate testing to its best to remove it temporarily. Im lost now dont know what else to try. If it does not, the coil's secondary winding is faulty. Step 3: Disconnect the wiring harness for the ignition coils. Stator seems to test fine. In what context did Garak (ST:DS9) speak of a lie between two truths? It helps to have over 50 years of farming and ranching experience. Hi, Ive got a Twister Hammerhead 150cc. Sep 12, 2008. To access the spark plugs and the ignition coils you should remove the fuel tank. Changed fuel lines and back lines with new gas. So where did I go wrong either now or before ? No power to the coil on my Yerf Dog buggy and cant figure out why. This will always be hot and you can only turn off engine using the kill rocker switch. (These are both bullet-style connectors). But heres the thing.. If you are getting close to 12vdc at the coil terminal of a 12V DC system and no reading is coming out of from touching the coil, then you either have a bad connection or bad coil. 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. the plug is installed to the boot cap properly. 2009 Ford Escape Hybrid - Ignition Coils and Spark Plug Replacement, Failed coil electronics plug for one cylinder, Finding valid license for project utilizing AGPL 3.0 libraries. I have checked all the wires to to the cdi and from the stator and I see no breaks or frays causing an open or a gnd. The gap is determined by the amount of voltage generated by the ignition, spark plug gap, and the compression ratio. The only test results I can give you off the stator; I am not sure i trust but Did I get an engine with a bad unit? Is there a way to shut it off with the key? Ignition System. Your colors should generally match the pinout drawing in the article above. 1. If you do I would try a new CDI. 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. when you turn the key, or as soon as the rectifier is connected, etc). Any suggestions? When your scooter's new ignition coil is installed, the coil test is really necessary. Thanks, J. Roden. The function of the ignition coil is to multiply the voltage of the power supplied from the CDI, and to send the multiplied power to the spark plug. do you mean your turning the key to off and its still running? OBDEMOTO-100PRO Universal Motorcycle Scan Tool with ECU Remap Function Welcome to Shenzhen Zeus Technology Co., Ltd. Who we are?Shenzhen Zeus Technology Co., 1. Most people or even shops do not own one. Learn more about Stack Overflow the company, and our products. Jumping the start relay only spinning the starter, but you also need voltage to other circuits for it to run. View our Privacy Policy here. F N R. I plan on getting a multi meter this weekend. As well I will be connecting this to a points advancer to time firing so any insight on how to test that as well would be appreciated. from cdi 1 0.01 volts This leads me to think it is a problem with the neutral but I dont know how to confirm. Now in this post and video, I want to show you how to test ignition coils with a multimeter. We have replacement CDI pins and connectors if this ends up being the cause. I then added a additional ground wire from the frame to pin 3 still no voltage to the coil. You can trouble shoot the key switch with a multi meter. So it sat in my garage for about two years and now it wont start. Or, simply unplug the wires from each cylinder one at a time. Which wires are left over? If necessary, remove any plastic covers that may be covering the ignition coils. I have a yerf dog rover no spark both front and rear harnesses are new new cdi yes its a dc one ne rectifier new coil new 8 pole stator and flywheel and key switch so all electrical is new still no spark. whats next. The way to test the DC6-5. i was told the charging system could be doing this. Question my positive wire on starter is grounded, I can take ignition switch from key and touch it to the frame and motor turns over. So any real voltage tests will have to wait until then. Regulator rectifier gets warm/hot to touch in this 30-60 second period. Hi, I just brought home a GY6 powered scooter (velocity mp150-7) with an ignition problem (no spark). Am I missing something? Also the coil has been replaced as well as the spark plug. How does the ignition system control the Energy of the spark? Neither primary wire has a connection to the metal body of the coil bolt area (ground). Share ideas. Depending on your stator type, you have either 6, 8, or 11 windings. It is very comparable in design to the pulse transformers used in other appliances such as fence chargers, well suited for high voltage bursts. Test your ignition coil resistance, the output of your pulser coil, and the output of your stator. The first version was downloaded over 136,494 times and were happy that this information continues to help so many people! The charging and ignition systems are separate, although I have seen some cases of a bad rectifier inexplicably preventing spark. The pick-up sensor shows good voltage. I have a cg 150cc engine I am installing in a home built buggy. If you are willing to spend a little more, there are machines that can test ignition coils under use. 4. I then checked the CDI to ignition coil positive and get nothing at all. Revs slightly but as soon as rpms get past about 1500 it dies. but wanted to get some feedback if any of the steps are avoidable due to the symptoms. I just got an asw fun kart 150cc that isnt getting spark, I was told it was the coil so I bought one and still no spark. 125cc atv. 6 75.5 volts, when i take off the ON on the key it jumps too 2.5 v to 4. He currently has a home shop where he sharpens and rebuilds saws, repairs lawn mowers, mobility scooters, hydraulic jacks, and anything else that comes along. I have nothing hooked up besides the CDI and coil. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. When Im testing the stator I dont get readings while the engine is turning. Turns over great has great spark and compression. Questions of a Do It Yourself nature should be 2. Youre right, your stator seems healthy. Do you have a suggestions? $13.40 shipping. 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