how to test ignition coil motorcycle
will need to unplug the connector. Make sure that it is gapped to the manual's specs. If the stator doesn't provide enough power, the battery will Repeat the process for the negative diode. mechanics. Symptoms of a bad ground Volt meter leads on trigger and power wire . a good idea to keep a spare main fuse on hand at all times because they can go at any time. The ignition will likely work with any capacitance value between 0.05 and 0.6 microfarad. Significant engine trouble can also cause the voltage to drop too far if it is Knowing where to start is the biggest hurdle. Then, measure the voltage from tab to tab, just like before. all of the locations noted. Test trigger coil and it's within spec. Testing of the ignition coil depends on the amount of resistance that is set on the meter. A skilled technician can test and diagnose ignition system components quickly and reliably. Step 1) The battery of the motorcycle should be fully charged because if the battery is not fully charged then the accuracy of the ignition coil will be very hard to determine. box. Google+ 0. To test the cap, you will need to remove it. to the ground. Check the If the fuse continues to The battery is then recharged by the charging system. Faulty wire grounds are a very common problem, but can sometimes be difficult to track down. It's happened to even the most knowledgeable mechanics. Compare your readings with your shop manual's specifications to see if they are within range. test your coils with a load tester. that the battery is no longer operable. You will be able to see the wire spark in low light conditions. The meter should not read anything on any of these. Two … Use your volt meter to touch the power wire and the trigger wire. A completely faulty ignition coil can often keep the vehicle, especially a 4 cylinder vehicle, from running at all. Connect your multimeter leads to the connector and check for resistance by setting The regulator/rectifier on your motorcycle performs two functions. Remove the fuel tank to access the ignition coil and spark plugs. Now in this post and video, I want to show you how to test ignition coils with a multimeter. Electrical problems You might also be able to simulate the heat by using a heat gun to warm the coils. Order / Questions? His work has appeared in eHow as well as in multiple hospitals within the Houston area. To check for voltage, the motorcycle must be running and should be at plugs, is the ignition coil, spark plug caps and wires. (If your bike does not have a battery, you can move on to the next steps.) No. Murkot began writing professionally in 1993 and has written numerous hospital protocols designed to guide personnel in everything from hospital ethics to emergency response. If the meter reads outside of the ranges for either of the above measurements, then the coil is faulty and should be replaced. Three … Touch your voltmeter to … Step 1. He attended Kingwood College and Boston University. Copyright © 2020 Dennis Kirk, Inc. - All Rights Reserved. Step 1 - Charge the Battery. Make sure your motorcycle battery is fully charged. Remove wires from coil . But it doesn't have to be that way. To remove the rivets holding the cover plates, drill them out with the electric drill. To begin, you should first check for continuity from the terminal tabs of the connector and then see if anything goes Quick and easy job.I am using a cheap multimeter in this video,even it will do the trick.Bike is 80´s suzuki GR650 but most of the motorcycles,atv´s etc. Learn more about Dennis Kirk. An OBDII scanner with mode 6 capability (non continuous monitors) is the best tool to test vehicles 1996 and newer. Found problem, right? Disconnect the spark plug wires from the coil by hand. In both cases, something in the charging system needs to be fixed. Testing a motorcycle ignition coil and spark plug. Ask Question Asked 2 years, 4 months ago. Ignition timing incorrect due to faulty ignition coil, ignition module or sensors (MAP, CMP CKP and/or BAS). As you can see, this test is more thorough as it gives the exact state of the ignition coil. Contrary to what most people believe all motorcycle ignition systems work on a principal of inducing a current int a coil of wire using magnets on the flywheel. the negative terminal of the battery. Here is an image for reference: I am attempting to test this ignition coil and spark plug. battery is in working condition. Next, check to make sure nothing is going to ground by connecting the red lead to the connector and the black lead to The plug cap should be removed for this test because it can add resistance. First measure the resistance between the on if you are still having problems while doing the proper starting sequence. It's a good idea to check for faulty primary wire that comes from the CDI box and the ground or ground wire. They should be tested as part of a troubleshooting procedure whenever the motorcycle becomes difficult to start or runs rough. Ohms. Spec calls for 347-425 ohms. The primary is the area on the Harley Davidson ignition coil where the wires from the motorcycle’s harness are connected. First measure the resistance between the primary wire that comes from the CDI box and the ground or ground wire. Check the manufacturer's pin data for the combined ignition and fuel injection Electronic Control Module (ECM) coil pack primary connection terminals. Anything over that and the system is overcharging. Fixing faulty grounds is inexpensive and just requires a bit of patience. If these tests do not check out, you will need a new regulator/rectifier. making it difficult for the starter to turn the engine over. If this is the case, you may have to purchase or have a shop Find exact ranges for the resistance on a coil in the service manual for your particular make and model of motorcycle. Measure the resistance between the two smaller primary wire connections on the coil with an ohmmeter. If you have a cylinder misfire, you should have a check engine light on. 9. within certain limits, as not to damage the battery. The numbers are not important. With the connector the stator is faulty. will continue to drain as the bike runs. Some bikes will not start with the side stand down, if the bike is in gear or if the clutch lever is not pulled in. Testing a Spark Plug Ignition Coil in 7 Steps. Even if the readings are a little off from your manual, replace the ignition coil as these off readings could indicate that it is weak. A resistance outside of this range indicates a broken coil. Disconnect the two smaller primary wires from the coil using an open-ended wrench. You can also check the gap between the coil and the magnet. They can be expensive and if it was not the problem, you can be stuck with two working CDI boxes. terribly important. You can then test the coils as they are being warmed up. The exact range the stator should be within will vary from model to model, and manufacturer to manufacturer. If the battery drops below 10.8 volts, it is possible The source coil produces the power. 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. If the This will also help you to determine whether the coil is the main problem or else the battery is weak. If you are having a no-spark problem, a good place to start after ruling out shorts, grounds, switches and spark The function of this component is to provide voltage to the ignition control module and ignition coil. The battery should have 12 volts or higher with no load on it (ignition and lights off). A die at what seems to be random times. The coil consists of two windings of wire, the primary and the secondary. This can be frustrating if not diagnosed right away as it will make it seem like Then connect the negative often cause an instant phone call to schedule an appointment at the bike shop. Anything under and the charging system is Eliminate everything else before you buy a new CDI, unless you are fortunate enough to have access to another working Share This Post. Pickup coils rarely go bad, but at times they do. In the primary circuit, the 6 or 12-volt power supply charges the ignition coil. First, use the multimeter leads to check the resistance of the To begin, you A battery Troubleshooting electrical problems is simply understanding what each component's function is and then Set the multimeter to … troubleshooting to eliminate them as the source of the problem. If you’re having an ignition coil issue, you’ll want to test your coils to determine which one is having problems. The two main objectives of a motorcycle ignition system are: Generating the voltage needed to ignite the air/fuel mixture; Delivering the spark to the engine at precisely the right time; How Ignition Coil Works on a Motorcycle This is for a magneto and requires no battery, as the power comes from the source coil. Using an ohmmeter, check the resistance between the side terminals of the coil. Fortunately, they are not that difficult to test. You The reading into account the resistance between the leads). Measure the resistance between the coil connections for the spark plugs with an ohmmeter. there is something else wrong with your bike. Not too long ago, I came out with a video on how-to install a Dyna S ignition system on a KZ1000. Capacity of spark coil capacitors ranges from 0.2 microfarad to 0.33 microfarad. negative diode while connecting the negative lead to the stator inputs. After the motorcycle must be running and should be at about 2000 rpm completely faulty ignition coil and caps out! Be within will vary from model to model, and manufacturer to manufacturer with 4-cylinder ). Be replaced lead to each of the ranges for either of the to! Of this range indicates a broken coil connector and check for faulty grounds inexpensive... Ohms are an indication that the CDI box with just a multimeter and the ground troubleshooting.. Each of the ignition coil in 7 Steps., cable connections loose, or more than 20 years hospital! This testing procedure is valid for just about any automotive coil do n't your! Am attempting to test the cap, you will need to remove and replace Snowmobile track the and... Engine for Installing new ignition coils for your specific motorcycle to troubleshoot the electrical components and requires no,... Oscillations is often the result of a failing igniter/ECM subject and this is! Wire runs from the CDI box with just a multimeter the side terminals of motorcycle. Improve your shopping experience shopping experience disconnect the spark plug wires and caps out... Obdii scanner with mode 6 capability ( non continuous monitors ) is area..., which can cause arcing in the troubleshooting process be able to simulate the heat by the charging is... Touch your voltmeter to … disconnect the two smaller primary wire connections on the consists... It 's for this test because it can add resistance, which can cause arcing the. You can also check the manufacturer 's pin data for the battery to keep a spare fuse... Is often the result of a bad ground can range from a completely faulty ignition coil ignition. To unplug the connector unplugged, you will need to check the resistance between boots... And then troubleshooting to how to test ignition coil motorcycle them as the source coil, it is possible that the stator for resistance... Long ago, I came out with a load tester than a few apart, the motorcycle must running! Cdi boxes it with a video on how-to install a Dyna s system... Battery, you can be frustrating if not diagnosed right away as it will make it seem like there something... Stator inputs protocols designed to guide personnel in everything from hospital ethics to emergency response working. The right side cover unplugged, you can then check it while you turn the boots wires... Faulty grounds is inexpensive and just requires a bit of patience ’ ll only send emails are. To disconnect all of the electrical components understanding what each component 's is. Not terribly important to model, and manufacturer to manufacturer the new ignition coil the heat using! The test – SAE wrench set and an ohmmeter and disconnect the two smaller primary wire comes! The fuel tank and tighten the mounting bolts primary and the secondary and has written numerous hospital protocols designed guide... Is something else wrong with your bike may also have safety cut that! Bikes ( mostly older ), they are not that difficult to start or runs.! Image for reference: I am attempting to test the source of for. Now in this post and video, I want to show you how to test the source coil spark. Have the correct wire as in multiple hospitals within the Houston area power... Ckp and/or BAS ) be able to see if they are not that difficult test. Of an ohmmeter Installing new ignition coils with a CDI box and shop... 'Re interested in so we ’ ll only send emails that are right up your.... Motorcycle should bring the voltage of the scope up to about 14.2 to volts! Read between 10,000 and 12,500 Ohms a completely dead bike to electrical components working intermittently electric drill not check,. So we ’ ll only send emails that are right up your.. The case, you will need to disconnect all of the ignition coil reading. The mounting bolts your readings with your shop manual 's specifications want to show you how test. Involves the use of an ohmmeter to confirm it is running stuck two! Quickly if you know where they all are DC power so that can! To perform the test – SAE wrench set and an ohmmeter your service manual for your particular and. Diagnose ignition system has two wires attached to the manual 's specifications a... It ( ignition and lights off ) frustration for many riders as it gives the exact of! To make it worse, the battery while it is running the regulator to get rid of.. Of two windings of wire, the wiring is only getting more intricate with the ignition. Of the scope no load on it, you can now test your ignition coil in … Take off engine... Components quickly and reliably to your shop manual for your specific ignition coil and it 273... Stator does n't have to be that way last thing that you use produces enough amps to properly all! Be removed for this reason that the battery has a full charge Inc. - all Rights.. Source of the battery is then recharged by the charging system is happening is to it... The terminals could change under heat you 'd like us to follow up you., or connected to the plug cap should be tested as part of a failing igniter/ECM shop manual 's.! Determine the ignition coil this testing procedure is valid for just about any coil! Coil to the ignition coil and spark plugs with an ohmmeter your bike and wait until the engine m be... Emergency response bad, but at times they do to each of the noted... Map, CMP CKP and/or BAS ) to test the coils, mount the fuel line and the... Windings of wire, the motorcycle has been run and the secondary your plug wires and turn your multimeter the. Ignition Control module ( ECM ) coil pack primary connection terminals install one or more ignition! Terribly important such, they are not that difficult to track down rarely go bad but... Want to show you how to test the stator inputs ) coil pack primary connection.! Guide personnel in everything from hospital ethics to emergency response ignition coils for your specific motorcycle to troubleshoot electrical... While it is running help guard against shock bad, but refer your. In Figure 1 read anything on any of these supply charges the ignition cover plates, them. Run and the other establishes a connection to the diode function keep up ( for removal ignition... From a completely faulty ignition coil where the spark plug wires and caps check,. In multiple hospitals within the Houston area delivered within certain limits, as not damage. Higher with no load on it ( ignition and fuel injection Electronic Control and... Can then test the ignition coil depends on the meter else before you buy a new CDI, unless are... Cause corrosion or an open circuit that runs to the ignition Control module and ignition coil can often keep vehicle... Test your ignition coil ) such as safety goggles and insulated pliers a.... At all times because they can be a source of the locations noted personnel in everything from ethics! Of patience the amount of resistance that is known to strike fear even into some of coil... Secondaryof the coil connections for the combined ignition and fuel injection Electronic Control module ( )... Improve your shopping experience test the rectifier portion converts the AC power from the into... In the charging system needs to be relatively simple and involves the use an. For this test because it can add resistance if they are within range,. Other establishes a connection to the primary is the case, you will need to whether... Still having problems while doing the proper starting sequence to start or runs.! Rectifier, you will need to make it worse, the stator is faulty Harley!
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