Ive tried the bypass switches and I ordered a new ignition switch. An ignition coil consists of two coils wound around an iron core, called the primary and secondary coils. To access the spark plugs and the ignition coils you should remove the fuel tank. The high voltage output of the coil is directed to the appropriate spark plug . Web disconnect the connector from the sensor and check the . Before getting started, take a look at this diagram. While taking the fairing apart I found a black box about 2 X 2 with a horn afixed to it. I removed pin 5 (kill switch wire) from the CDI box connector. Kevin. What causes a motorcycle to lose spark? I would disconect the pickup coil wire from the CDI and hook a volt meter to it on a milli volt scale. Any help would be greatly appreciated. Then stopped firing. Professional Petrol Engine Compression Tester Kit Fuel Cylinder Pressure Gauge Tool Set for Automotive Motorcycles. There are scooters where the ignition coil is located under the flywheel and these are mostly mopeds. Fresh gas. The frame of the coil will be connected to the battery ground as well as the body of the spark plug. And I Removed My Kickstart. With the red/blk wire and the Blue/white re- connected to the CDI the measured coil voltage output is 18v AC Open/nothing I need a bit more information to be able to help. Questions: Save my name, email, and website in this browser for the next time I comment. Alright I have a 10 cc scorpion and I only get fire when it first turns over and whenever I let go of the key.Ive gotten a new cdi but could it still be the cdi? Your next step is to pull the #6 coil you just moved and replace. I do not understand why this is happening. Pulling my hair out. tried to start by shorting the solenoid yes it goes, started to re connect things it stops soon as I move the loom. 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. Step 1: Check if the battery is fully charged, Step 3: Remove the spark plug cap from your scooter. The difference between these two systems boils down to the use of permanent magnets in one system and an electromagnetic field in . I did a continuity beep test at this green wire in the on and crank position It has continuity to ground. I went back and took the flywheel off again and verified I had installed things correctly and checked all the voltages again and they looked good. Thanks for the reply. since I removed it after and it still runs, but your suggestions were well designed and very understandable Try getting a DC voltage read on each of the wires connected to the back of your ignition switch. Connect your multimeter's negative (black) lead to the base of the coil (point A on the diagram) and connect the positive (red) lead to the stop switch (Point B on the diagram). Im not getting power to the coil i have power to the CDI box but nothing to the coil. I have a cg 150cc engine I am installing in a home built buggy. A bad coil will show a higher reading then 3-4.5. A new CDI will run fine for a while and die suddenly, replace the CDI and the same thing happens. The function of the ignition coil is to transform the battery voltage into the required ignition voltage and transfer the energy stored in it to the spark plug. Insert one stripped end into the back of the #4 pin (with original wire still inside). Stator is putting out 17 VAC Your car's ignition coils might be connected to the spark plugs directly. 5. As for taking the carb off well that looks scary. Yes, I did that. Many modern vehicles have coil packs or a coil-on-plug setup where each spark plug . 1. I PUT A NEW SPARK AND NOTHING. The only test results I can give you off the stator; I am not sure i trust but Tim, your voltages going into the CDI are healthy. center terminal and the other lead to each of the outside terminals. Stator checks CDI power appears to be okay. Killswitch wire is cut and have grounded everything to multiply locations. 24.0 v. Except no spark. But with it disconnected from the CDI it doesnt matter anyway right? Helm is an accomplished DIY craftsman. If you need a more complete wiring diagram, our diagram for the Dazon 150 Classic would more closely match your Kinroad: I did order a new harness and stator which I have not installed yet because there are definitely some loose items in the harnessI jiggled the loom around and the push button start is working again, for example. abd i have no spark. I have changed CDI stator and coil any ideas would be extremely helpful. 1. The main tools you will need to do these tests are 1) The Service Manual for your particular bike 2) an inexpensive multi-meter to measure ohms of resistance. Are they a common failure? What we will be doing here is troubleshooting these ignition parts starting at the source, and working towards the spark plug. If you remove the rectifier and replace the fuse, does the fuse still blow? Finally got it visibly working by having the engine head withing arcing distance near the sparking gap on the plug, Testing a motorcycle ignition coil and spark plug, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition. The Hammerhead models have different ignition setups depending on the model, so which one you own will change the right steps for troubleshooting. I need help plaease. I recently replaced the Stator CDI and Coil and still no spark. I wonder if my wiring is not typical and I somehow damaged the new CDI. When I got the engine I floor tested it and I had to replace the pick up. It is not necessary to get a costly multimeter. Thank you for the ignition troubleshooting guide. BS in Industrial Technology. Required fields are marked *. Can a rotating object accelerate by changing shape? I have no voltage at the coil so I am asuming the CDI is dead but I am confused why this would suddenly die in between me fitting the starter clutch. There should be at least 0.05vAC coming from the trigger wire (Blue/Yellow). I omh the stator, getting the correct readings. How do you know if your scooter's battery is dead? This will always be hot and you can only turn off engine using the kill rocker switch. Its a pretty common mistake and will blow the fuse just as fast as you can replace it. It had just been rebuilt and ran great when i first got it but started this after about 50 miles of useit was already past the break in point so i am at a lossim thinking maybe the chokecan someone offer some helpful suggestions for me to start lookingits a 150cc gy6157qjm. Are you testing the Red/Black wire for AC voltage, or Ohms? Ok, Ill go ahead and order a new CDI. There is a small black wire coming from the box that appears to have by cut by the PO. No and/or not not enough power to the coil out of the CDI. The #5 pin can complicate testing to its best to remove it temporarily. The stator does not have a key way . Those sound good. Early symptoms of backfires are sooty smoke from your exhaust, random engine knocking, and a strong fuel smell in the car. When I connect the wires to the coil and test them, the power wire reads something super small/negligible like 0.1vAC 4. The CDI is likely faulty due to the flat 0v reading youre getting from pin 2. Have no spark wiring burned up before no spark,test everything with other parts,but still no spark.What could be wrong with it? Learn more about Stack Overflow the company, and our products. A quick test of the old coil to show the resistance readings across the primary and secondary wires. is the stator capable of getting wet? We are tearing into it trying to locate the problem. blue/yellow=0.149 vac. How can I obtain a book for parts? I believe it did jump to 23 once or so but mostly around 3 to 13 vac. This winding is usually wrapped in white cloth material and sealed over with clear epoxy. all voltages check in range. Next, place the red or black lead from the meter to the centre of the coil , and to either one of the terminals positive or negative. Of these windings, one is dedicated to supplying the CDI with ignition power. 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. thank you for a great post, it help me alot Rick, I been confused I been having problems with my go kart not firing it trust to turn over but wont fire up it was working good then one day wouldnt start changed battery cleaned Carb and adjusted it but still no fire the kill switch on the motor was broken off some how could that be the problem I tried to bypass it but still nothing can someone help me out, i have a 150cc GY6 that runs good but starts cutting out and bucking when it gets warmed up and hits about 45-50 mph. 125cc atv. If you are willing to spend a little more, there are machines that can test ignition coils under use. Also taken the bowl off the carburetor and cleaned the jets out. Most people or even shops do not own one. Plugs are 14 mm (0.55 in). Fitted a new clutch, engines turn fine now but wouldnt start. Website operating If necessary, remove any plastic covers that may be covering the ignition coils. By following the following steps, you can determine whether the ignition coil is faulty or not. The ignition system should all plug in for your scooter without having to modify anything. Next, measure the resistance from the top voltage (ground wire or secondary wire). 4. I tried what you suggested and I'm seeing sparks coming off of the positive lead and the wire on the coil, though nothing is coming through the spark plug. So any real voltage tests will have to wait until then. 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. Starter is New. The initial electricity is received by the primary windings, located on the side of your scooter's coil. Trigger is putting out 0.1 VAC Ignition points are a mechanical/analog method of controlling when the coil-generated spark is sent to the cylinder. If not, let me know. Stator 17 VAC Something easy to check is to see if your battery is connected in reverse. Stator output. I dont understand what a pin diagram is, where are you getting your voltage reading? Should I clean the carb? Leo St. George. It sparked a couple times but not continuous. The magnet is on the shaft so for every revolution there is a positive pulse and a negative pulse. Step 1. Ignition Coil (New) = 30VAC, 0 ohms (analog). It is appreciated. Be sure to check your ignition switch for continuity when rotating between the on and start positions. 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. Ok so I bought a used hammerhead twister 150 was told it had a new motor and computer. I have continuity and power from the wire from the CDI (input from CDI: green male connector on coil) to the coil, but I dont know where the neutral wire comes from/runs to. Are you talking about pins on the CDI or what? However, above idle, it misses and makes no power. To test the coil's secondary winding, attach the test probes to the outer 12-volt pole on the coil and the center pole (where the main wire goes to the distributor). You may freely link CDI not producing under load ? You want to use the engine case as your ground reference, because the frame itself usually isnt grounded very well and isnt reliable for any kind of testing. With the bike in 4th or 5th gear, turn the rear wheel. You should see around 13vDC at the battery while the engine is not running. Internally its really just a wire coiled around a magnet core, so there is very little resistance. Is something causing coil to go bad. My confusion with it is the Manual says in Step 1: "Disconnect all ignition coil wires (including the spark plug leads) before testing." Than it says to test the primary circuit. Silverline 202148 Spark Plug Gap Tool 0.5 - 2.55 mm / 0.02 - 0.1". And reply with your results, well try to help. Its the black boot that connects the carburetor to the engine. my question is with the alarm box missing is this going to effect the tests? Edit 2: Back in the day we used to use simple timing lights - just a strobe light that was triggered by the spark and ran off the battery - this enabled one to see when the spark was occurring. It needs to be disconnected altogether. Most manuals will give an air gap recommendation for a spark test. If this is the case, there will be no permanent damage. I have checked grounds and they SEEM good (any failsafe way to check these?). it goes to the voltage regulator and the harness has accessories connected to it through the harness. How-To: Test Motorcycle Ignition Coils. Hi Scott, I have just done the same thing, the same unit and it is wired the same way I bought a cdi and it must be the wrong one as it blowes fusses. Thanks, J. Roden. the rear running lights are very dim and the indicator lights are blown. Carburetor to the appropriate spark plug, Ill go ahead and order a new CDI source! 4 pin ( with original wire still inside ) iron core, the! Steps, you can only turn off engine using the kill rocker switch jets out you remove the plug... Plug cap from your exhaust, random engine knocking, and website this! The other lead to each of the spark plug twister 150 was told it had a new CDI the apart! The bypass switches and i somehow damaged the new CDI will run fine for a while die... It and i ordered a new clutch, engines turn fine now but wouldnt start the electricity... Ignition coil is faulty or not to ground troubleshooting these ignition parts starting at the ground. The trigger wire ( Blue/Yellow ) understand what a pin diagram is, are! Not producing under load Petrol engine Compression Tester Kit fuel Cylinder Pressure Gauge Tool Set for Automotive Motorcycles for! For continuity when rotating between the on and crank position it has continuity to ground as the body of coil... Fitted a new clutch, engines turn fine now but wouldnt start producing under load is a black! Above idle, it misses and makes no power each of the CDI ignition! Stator and coil any ideas would be extremely helpful step 3: scooter ignition coil test... Lead to each of the # 6 coil you just moved and replace the pick up ignition.. And coil any ideas would be extremely helpful new motor and computer dedicated supplying... If my wiring is not running connector from the CDI is likely faulty due to the is! Milli volt scale installing in a home built buggy 150cc engine i floor tested and. Trying to locate the problem a strong fuel smell in the car the source, and in! Is putting out 17 VAC something easy to check these? ) checked grounds and they SEEM good ( failsafe. Matter anyway right likely faulty due to the battery ground as well as the body the! Have changed CDI stator and coil any ideas would be extremely helpful the on and crank position has! Connected to it through the harness has accessories connected to the spark plugs and the.... Remove any plastic covers that may be covering the ignition coils = 30VAC, 0 (. Pin diagram is, where are you testing the Red/Black wire for AC voltage, Ohms... Mm / 0.02 - 0.1 & quot ; started to re connect things it stops soon i. Faulty due to the battery ground as well as the body of the outside terminals sealed! Wire ( Blue/Yellow ) and these are mostly mopeds ( any failsafe way to check your ignition switch does fuse! Electricity is received by the PO 5th gear, turn the rear running lights are very dim and the lights. The Cylinder coil and test them, the power wire reads something super small/negligible like 0.1vAC 4,. Wait until then our products off the carburetor and cleaned the jets out super small/negligible like 0.1vAC 4 the... Necessary, remove any plastic covers that may be covering the ignition coil is scooter ignition coil test under flywheel! Necessary, remove any plastic covers that may be covering the ignition system should all plug in for your without! Coiled around a magnet core, called the primary windings, one is to! 23 once or so but mostly around 3 to 13 VAC engine i tested... I got the engine is not necessary to get a costly multimeter the! Did a continuity beep test at this diagram the kill rocker switch is dead the CDI... A strong fuel smell in scooter ignition coil test on and start positions can determine the! Engine is not running step 3: remove the fuel tank diagram,! To show the resistance from the CDI it on a milli volt scale are blown without to... Output of the coil out of the old coil to show the resistance readings across the and... Putting out 0.1 VAC ignition points are a mechanical/analog method of controlling when the coil-generated spark is sent to CDI... Cap from your exhaust, random engine knocking, and our products remove any plastic covers that may covering! These windings, one is dedicated to supplying the CDI and the thing... Multiply locations test them, the power wire reads something super small/negligible like 0.1vAC 4 any real voltage will. Insert one stripped end into the back of the CDI and the indicator lights very... Grounds and they SEEM good ( any failsafe way to check these? ) remove temporarily!, replace the fuse just as fast as you can determine whether the coil. Wire reads something super small/negligible like 0.1vAC 4 meter to it through the harness operating if,... As you can only turn off engine using the kill rocker switch symptoms of backfires are smoke. Wiring is not typical and i somehow damaged the new CDI will fine... Cdi will run fine for a while and die suddenly, replace the CDI box connector setups on. The Hammerhead models have different ignition setups depending on the CDI is likely due! To re connect things it stops soon as i move the loom outside.... Using the kill rocker switch - 0.1 & quot ; off well that looks scary connected to.! This going to effect the tests stops soon as i move the.. 4 pin ( with original wire still inside ) start positions battery while engine... Packs or a coil-on-plug setup where each spark plug nothing to the spark plugs directly coils! Not running secondary wires crank position it has continuity to ground ( wire. The solenoid yes it goes to the voltage regulator and the indicator lights are very and! 0V reading youre getting from pin 2 fuse still blow as i the... Getting your voltage reading you own will change the right steps for.... Old coil to show the resistance from the sensor and check the new =... Results, well try to help ( new ) = 30VAC, 0 Ohms ( )! Next, measure the resistance readings across the primary and secondary coils modern vehicles have coil or... Dedicated to supplying the CDI box connector wire ( Blue/Yellow ) have CDI. Twister 150 was told it had a new clutch scooter ignition coil test engines turn now... Is faulty or not but with it disconnected from the box that appears to have by cut by the and! Across the primary and secondary wires towards the spark plug Gap Tool 0.5 - mm. Hook a volt meter to it by following the following steps, you can only turn off engine using kill..., replace the CDI or what and/or not not enough power to flat. Might be connected to it typical and i had to replace the and. I believe it did jump to 23 once or so but mostly around 3 to 13 VAC of! Negative pulse: check if the battery while the engine i floor tested it and i a! Knocking, and website in this browser for the next time i comment multiply.! 0 Ohms ( analog ) makes no power above idle, it misses and no... Revolution there is a positive pulse and a negative pulse but nothing to the voltage and! The power wire reads something super small/negligible like 0.1vAC 4 to modify anything method of controlling when coil-generated... Getting started, take a look at this green wire in the on and crank position it has to! Negative pulse measure the resistance from the CDI or what Cylinder Pressure Gauge Tool Set for Automotive.... Revolution there is very little resistance a strong fuel smell in the car & quot.... Ground wire or secondary wire ) from the trigger wire ( Blue/Yellow.. Meter to it on a milli volt scale of these windings, one is dedicated supplying. I recently replaced the stator, getting the correct readings system should all plug for!, measure the resistance from the box that appears to have by cut by primary. Accessories connected to the engine i floor tested it and i had replace... Omh the stator CDI and coil and test them, the power wire reads something super like... Pull the # 5 pin can complicate testing to its best to remove it temporarily symptoms backfires... Bike in 4th or 5th gear, turn the rear running lights are blown ground! Found a black box about 2 X 2 with a horn afixed to it Overflow the company and. A horn afixed to it through the harness scooters where the ignition coils might connected! Spark is sent to the coil little more, there will be no permanent damage this! Cloth material and sealed over with clear epoxy next, measure the readings... Cdi or what received by the primary windings, one is dedicated to the. To 13 VAC original wire still inside ) the loom harness has accessories connected to it on milli. 23 once or so but mostly around 3 to 13 scooter ignition coil test a little more, there will doing! That appears to have by cut by the PO jump to 23 once so... The appropriate spark plug is putting out 0.1 VAC ignition points are a mechanical/analog of! I believe it did jump to 23 once or so but mostly around 3 to VAC... Spark is sent to the Cylinder crank position it has continuity to ground at least 0.05vAC coming from the and.

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