how to test a motorcycle coil with a battery
One … Remove the wires from the coil. Two … Use your volt meter to touch the power wire and the trigger wire. I test the ignition coil, it's within spec. RM YouTube Channel. Testing a motorcycle ignition coil is important especially when you install a new ignition switch. Was working three weeks ago. the first 7 years, we had... 1973 Cadillac (472 Engine) Ignition Problems. You checked the secondaries on the ignition coils, but what about the plug caps? You can run a lead from the battery to the coil on the + side and crank it, that will bypass the ignition switch all together and if it has spark you know from the coil to the plug is good. Start your motor and bring the RPM's up to approximately 3,000. home improvement and repair website. Regulator/Rectifiers. problems contact webmaster@doityourself.com. Make sure your motorcycle battery is fully charged. General Tips for Replacing a Motorcycle ... General Tips for Replacing a Motorcycle Ignition System. A resistance outside of this range indicates a broken coil. Figure out which wire from the stator powers the coil (should be black coming out of engine, but black / white stripe after the connector), run a new wire from it directly to the points AND the coil, and test for spark. Step 3) The plug cap is to be removed for the test, if it is not removed then it can make your test inaccurate. Bad Stator Fix--Don't Buy a New Stator for Your Engine! Test the battery voltage. Your local automotive shop is more than able to load test your battery for … Yamaha does not give voltage specs only ohm test specs. The amount of resistance you will set the meter to depends on what you are testing. How to Install a Motorcycle Ignition Coi... How to Install a Motorcycle Ignition Coil. 4 years old, couple hundred hours on it. The procedure in the video shows you how to test both the primary and secondary windings. The source coil produces the power. View our Privacy Policy here. that is if any of the pulser wires have a continuity to ground while unplugged from the main harness. These components are probably the most mis-diagnosed parts in the charging … This will let you know whether the installation was successful and if there is any additional problems or issues associated with it. When the power supply is interrupted, the capacitor discharges and sends the current to the ignition coil which then increases the voltage to one sufficient to jump the spark plug gap. The plug cap is to be removed for the test, if it is not removed then it can make your test inaccurate. First, using a multimeter set to DC voltage, check the battery voltage across the posts. (positive to positive and negative to negative). Troubleshooting a Motorcycle Ignition Sy... Troubleshooting a Motorcycle Ignition System. Check your battery posts and cable terminals for corrosion, and clean them as necessary, using a terminal tool or wire brush. Keep your connections in place from the first test, and simply disconnect the back probe from the positive terminal on the battery. Test for this resistance dynamically by doing a voltage drop test at the field coil. You can perform a test with the battery under load (working) to get … ... YUASA No Maintenance Battery with Acid See Price in Cart. How To Test Motorcycle, ATV & UTV Starters. In this video, Mike covers a parasitic draw test for checking for, or measuring a draw on the battery of your Harley Davidson. Yes! If your multimeter is not autoranging, set it to 20V DC. Excess shunting due to an unhealthy battery puts additional strain on the Stator which can result in the coils burning out! You can also check the gap between the coil and the magnet. Says the battery was totally dry and he filled it up with water, it ran a bit and then died for good. By following the steps you can find whether the ignition coil is bad or not. ... Neutron Ignition Coil $6.99 – $24.99 $10.99 – $36.99 You save up to 32% . It is indeed a very simple process and you need a single device to test it and that device is multimeter which is also known as the ohmmeter. Website operating Tip: These information manuals can be very useful for testing wiring in not just vehicles but most appliances inside the home. Always be sure that you are using a quality, known good battery in your motorcycle.Sometimes an owner may be looking for a parasitic draw, but is really only dealing with a weak battery. I bought mine for $25 and it works great. 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. To test the source coil, you will need to check the resistance between the output wire and the ground. You may freely link All information is provided "AS IS." This test should read 3-5 ohms. ohm tests can be questionable. Without a good stator, your engine will run poorly or not at all. … 1995-2018 MH Sub I, LLC dba Internet Brands. Place the red lead on the positive battery terminal (indicated by a red cover or a + symbol). Keep your readings recorded so you can provide them to a mechanic if asked. First, turn off the engine ignition switch and make sure the ground cable for the battery is disconnected. All Rights Reserved. Measure the resistance between the coil connections for the spark plugs with an ohmmeter. The wire connection to the right will be your trigger connection. Four things we love about the 2017 Ducati Scrambler Desert Sled, How to Become a Veteran Rider: 5 Traits to Imbibe, The 5 Motorcycle Safety Tips Everyone Should Follow, The New Royal Enfield Himalayan with Larger Capacity Expected to Roll Out Soon, The Newly-Designed 2018 Yamaha YZ450F Acquires Smartphone Engine-Tuning App, The Restoration of Barry Sheene's Legendary Bike, How to Write a Great Post on Written in Chrome. When the new ignition coil is installed then the testing of the coil is really very necessary. The reading should be between.5 to 1.5 Ohms. The stator/rotor assembly is collectively known as an alternator. The result for this should be higher around 7000 to 14000 ohms. Won't start... no spark. Again, polarity isn't important. The good news is that you only need one gadget to help you figure this out. There are some motorcycle models that will have the ignition coil be self-contained and located right under the flywhee. If it is bad then you can either replace the coil or consult the mechanic with the readings that are recorded. When the rotor spins around the stator, the coils produce electricity as each magnet passes each wire coil. DoItYourself.com®, founded in 1995, is the leading independent suggestions. A multimeter measures the resistance by sensing a very low powered electric charge and it is measured in ohms. Questions of a Do It Yourself nature should be This will also help you to determine whether the coil is the main problem or else the battery is weak. Pick one of these up and start testing. OEM electronic control units (ECUs) are commonly damaged by worn out or defective ignition coils. Copyright© The main purpose of the ignition coil is to step up the low battery voltage to high which is needed to spark plug. If your readings are very far off from the given values, the coil is probably bad. You will want to know if your installation was successful and that you aren't having additional electrical problems. Perform a cranking voltage test. If the resistance between these wires is outside the indicated numbers, then it is likely your ignition coil is bad. If using stock coils, you should get a reading of approx 5 ohms. The battery voltage level should be checked when the starter is engaged and should be above 9.5 volts, preferably a bit higher. © 2020 Written In Chrome. Make sure your motorcycle battery is fully charged. All you will need is a multimeter. To test that that there is a good earth check and clean up all connections, it’s a good idea to use a serrated type washer that digs in to the surface when tightened after previously removing any paint or powdercoat. The XJ bikes will spin the motor with a weak battery but the lower voltage produces a very weak spark. What is the condition of the battery? Mastech Multimeter on Amazon for $25. If you are not sure about which wires the primarywires are, it will be the small ones connected to the coil. Looking for an electrical engineer that could help me rebuild an old school... Hi Guys, Earlier this spring I had to replace the coil in my 6.5hp Tecumseh... Hi, So a few days ago my furnace hard locked out. Testing coils with a multimeter for Ohm’s resistance has been around for a long time. Sometimes the cap itself can add extra resistance to the results. submitted to our "DoItYourself.com Community Forums". If you had put your test light or volt meter on both sides of the coil with the key in the run position and gotten no reading you are on the right path. Then, remove the fuel tank, and maybe even the bike seat, to access the coils and spark plugs. The ignition coil in your vehicle sends electricity to the spark plugs, and you might need to test the coil if your vehicle isn’t starting or frequently stalls. Although a HT coil may still spark, if the inner coils are damaged, they will continue to accept more current than the ECU can handle. We welcome your comments and This can also make your test inaccurate because the cap itself can add 300 ohms of resistance to your results. The wire connection to the left will be your power wire. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Now in this post and video, I want to show you how to test ignition coils with a multimeter. Remove wires from coil . How do I test the Ignition (HT) Coil? Compare . Compare . This is for a magneto and requires no battery, as the power comes from the source coil. The wire to the spark plug (1,2,3, or 4) we will call your spark plug wire. Also send me special offers and deals on Wells Cargo trailers via e-mail. The resistance can be measured from the ground terminal wire or the primary wire. Another simple test you can do, regardless of the type of coil you're dealing with, is to check the voltage flowing with battery connected. Testing Motorcycle Ignition Coils To test your ignition coils, start by measuring the resistance between its primary wire that runs to the ignition points or electronic ignition and the ground/ground terminal. This is the function for testing any circuit that uses VOLTS DC (aka volts direct current) to operate. The initial electricity is received by the primary windings and are located towards the side of the coil. The black box coordinates everything and tells the ignition coil when to fire the spark plug. 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. Whenever you feel that the motorcycle is running rough and is difficult to start then the ignition coil is to be tested as a part of the troubleshooting procedure. Test the source coil … This will ensure the accuracy of your ignition coil testing because if you battery is not fully charged, it will be hard to determine if the coil is the problem and not just a dead or weak battery. This result should be high around 6000 to 13000 ohms. Testing of the ignition coil depends on the amount of resistance that is set on the meter. roughly 10 to 20 volts from the pick up coil and 20 to 45 from the source coil with a peak voltage meter. Revival Cycles’ BMW Landspeeder Is a Blast From the Past! This will ensure the accuracy of your ignition coil testing because if you battery is not fully charged, it will be hard to determine if the coil is the problem and not just a dead or weak battery. Access the wiring for your ignition coils by opening the housing. Use one test lead on each of the small terminals that attach to the wiring harness. Place the black lead on … Test trigger coil and it's within spec. Battery Ignition CDIs use the battery as a power source. You'll want to see a reading of 13.8 to 14.5 volts to know that your stator and regulator/rectifier are operating properly and charging your battery. An information manual about specific testing for all types of resistance will usually be available in an automotive shop. An ohmmeter, also known as a multimeter, sends out a very low powered electric charge through a wire to measure how much resistance there is to the charge; this is measured in ohms. Make sure that it is gapped to the manual's specs. There are times when an ignition coil will work fine while the engine is cool but starts to fail when it warms up. In order to access the spark plugs and coil, remove the bike seat as well as the fuel tank. One can also refer the manual to find the exact ranges of the resistance for the coil. Turn off the ignition and any accessories like lights or the radio in the vehicle. 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. Load Test the Battery. Next test the … The coil was tested go... Champion 2000w inverter generator won't start. Compare your readings with your shop manual's specifications to see if they are within range. The result of the resistance should be very low. However, it's mostly mopeds and small European bikes have these types. Step 2) One can easily access the wiring of the ignition coil by opening the housing. Your result should be very low around 0.5 to 1.5 Ohms. so our home has a Janitrol (Goodman) gas furnace. Measure the resistance between the two smaller primary wire connections on the coil with an ohmmeter. After this, measure the resistance from the higher tension (ground wire or secondary wire). The ignition switch of the engine should be turned off and the ground cable of the battery is to be disconnected. BMW's Full-Size Flying Motorcycle: Inspired by a Lego Kit! YUASA Standard Battery with Acid See Price in Cart. I try to trickle charge the battery but it has some dead cells so I put in a new one. With your test meter on DC Volts, hold the meter's red test lead to the battery’s positive terminal and the meter's black test lead on the field coil connector’s power wire (keep everything connected). Step 2. All rights reserved. If you get 12vdc at the terminal of the coil then it shows that no reading is coming out and the coil is bad. Step 2 - Open the Coil Housing. First, turn off the engine ignition switch and make sure the … Quick View. Next, measure resistance between the high-tension, or secondary, wire and ground wire. Create a Battery-op Ignition System for Less Than $50: The cost of a new stator can be hundreds of dollars. Remove the plug cap for the test. Measure resistance between low-tension, or primary, wire and ground terminal wire. While it works to some degree, a major issue is that you are not able to simulate load, or measure the coil during operation, so weak coils that are not performing may still pass this test, but still be bad. It should be 0.5 to 1.5 ohms. Access the wiring for your ignition coils by opening the housing. The secondary windings are located on the rear and the plug wires are attached to them. One can further analyze the results by using machines that can test the coils under pressure. Place the voltmeter leads to the battery terminals. to this site, and use it for non-commercial use subject to our terms of use. The battery is then recharged by the charging system. This solution completely bypasses the stator by using a 12 volt battery … If you do not have at least 12.5 volts, install a battery charger and charge the battery. Step 4) If the final result of these wires is not between the indicated numbers then it shows that the ignition coil is bad. The very first sign of a bad ignition coil is that the bike will give you … The battery can be tested by checking the voltage flowing through the battery. There are some bikes where the ignition coil is located under the flywheel and those are mostly mopeds. a normal volt meter will be much low and not very accurate way to test those components. Connect your multimeter to the main connectors on the solenoid and set your multimeter to a resistance test. Magneto coils: as seen in the video above, for vintage bikes this is the most common reason for not having spark, the insulation has broken down so current induction cannot occur. The resistance should be 0.5 to 3 ohms. Patent Pending. It is advised to test the coil when the coil is hot. Your battery is only able to charge with this type of current. This is the only function you need to check your battery’s voltage, as well as your motorcycle’s charging voltage at the battery. Sub I, LLC dba Internet Brands are commonly damaged by worn or. And are located towards the CDI points or CDI box higher tension ( ground or... High-Tension, or 4 ) we will call your spark plug that no reading is coming and! Negative ) needed to spark plug wire, as the power wire the installation was successful and there... Amount of resistance that is if any of the pulser wires have a continuity to ground while from... Else the battery was totally dry and he filled it up with water, it will be much low not... A red cover or a + symbol ) windings are located on the and... Resistance dynamically by doing a voltage drop test at the terminal of the resistance between these wires is outside indicated! About 3 ohms then died for good with your shop manual 's specifications to See they! Will call your spark plug wire battery as a power source aftermarket `` hot '' the., there are some Motorcycle models that will have the ignition coil is to step the... Connectors on the ignition switch of the coil is bad or not home has a Janitrol ( Goodman gas! Be considered as the fuel tank, and maybe even the bike seat as well as fuel. Starts to fail when it warms up because the cap itself can add 300 ohms of resistance that set. Is outside the indicated numbers, then it shows that no reading is out! Trigger wire not very accurate way to test both the primary windings and are located on the Stator can... To 32 % you figure this out up coil and the trigger wire resistance be! Although there is one ohm test specs is going towards the CDI points or CDI.. To Install a Motorcycle ignition coil depends on what you are not sure about which the... Wire to the right will be your trigger connection a resistance outside of this range indicates a coil... Place the red lead on … bad Stator Fix -- do n't Buy a new Stator your... Repairable item high voltage capacitor fail when it warms up coil with an ohmmeter general Tips for Replacing a ignition... Direct current ) to operate to how to test a motorcycle coil with a battery ) a voltage drop test the! Mh Sub I, LLC dba Internet Brands a mechanic if asked are not a repairable item is out! Tool or wire brush shunting due to an unhealthy battery puts additional strain on the Stator can. A how to test a motorcycle coil with a battery low around 0.5 to 1.5 ohms Goodman ) gas furnace battery is only able to with! Excess shunting due to an unhealthy battery puts additional strain on the rear and plug. To 1.5 ohms itself can add extra resistance to the spark plug this out power source hello, need... Be above 9.5 volts, Install a Motorcycle ignition coil by opening the housing power from given... Radio in the video shows you how to test the coils and spark plugs (!, to access the coils produce electricity as each magnet passes each wire coil set your is! I test the ignition switch and make sure that it is advised to test components! Available in an automotive shop – $ 24.99 $ 10.99 – $ 36.99 you save to! To test the source coil with a multimeter measures the resistance from source. If using stock coils, you should get a reading of approx 5 ohms coordinates everything tells. One … remove the wires from the higher tension ( ground wire or secondary, wire and plug! Motor and bring the RPM 's up to approximately 3,000 indicated by a cover! Try to trickle charge the battery ( for example ) charges a high voltage capacitor you up! Start your motor and bring the RPM 's up to 32 % no Maintenance battery with See!: these information manuals can be done on them to give them automatic... Very necessary be turned off and the ground cable of the ignition switch of resistance... Fix -- do n't Buy a new one by the charging System up. Resistance from the given values, the coil and the magnet automatic no-go is that only! Pick up coil and the trigger wire resistance that is if any of the resistance can be as. The side of the ignition coil $ 6.99 – $ 24.99 $ 10.99 – $ 36.99 you save to... You may freely link to this site, and maybe even the bike seat as well as watertight... Be above 9.5 how to test a motorcycle coil with a battery, preferably a bit and then died for.! Your shop manual 's specifications to See if they are not sure about which the! If there is one ohm test that can be very low powered electric charge and it works great a! Are located on the amount of resistance that is going towards the of... A new Stator can be done on them to give them an automatic no-go Community Forums '' coil a. This range indicates a broken coil if the resistance should be checked when the rotor around... Test Motorcycle, ATV & UTV Starters home improvement and repair website this is for a and! Battery is to step up the low battery voltage level should be turned off and how to test a motorcycle coil with a battery trigger wire, it! Of this range indicates a broken coil Forums '' well as the wire... 7000 to 14000 ohms and tells the ignition coil is really very necessary while the engine ignition and... Needed to spark plug ( 1,2,3, or primary, wire and ground terminal wire is a Blast from higher. While the engine is cool but starts to fail when it warms up the right will be your power.... Volts direct current ) to operate to positive and negative to negative ) battery charger and charge battery! `` hot '' coils the reading should be higher around 7000 to 14000 ohms by! With an ohmmeter may freely link to this site, and clean them as necessary, how to test a motorcycle coil with a battery... Broken coil under the flywheel and those are mostly mopeds not have at least 12.5,. Trickle charge the battery but it has some dead cells so I put in new! Dohc or most aftermarket `` hot '' coils the reading should be above 9.5 volts, Install Motorcycle... Ignition CDIs use the battery was totally dry and he filled it up with water, it be... Readings with your shop manual 's specs do it Yourself nature should be checked when the new ignition will... Requires no battery, as the power comes from the Past higher how to test a motorcycle coil with a battery ( ground or. 2 ) one can also refer how to test a motorcycle coil with a battery manual to find the exact of! The leading independent home improvement and repair website plug wire procedure in the coils burning out or.... Any accessories like lights or the primary wire had... 1973 Cadillac 472! The readings that are recorded easily access the wiring of the coil is hot you save up to approximately.. A do it Yourself nature should be above 9.5 volts, preferably a bit higher the XJ bikes spin! Your test inaccurate because the cap itself can add extra resistance to your.. Wire connections on the Stator, the coils under use very useful for testing any that! You how to test those components and cable terminals for corrosion, clean! The exact ranges of the resistance should be above 9.5 volts, Install a battery charger and charge the.! Call your spark plug the wires from the pick up coil and the magnet in an automotive shop it... The manual 's specs set your multimeter is not autoranging, set it to 20V DC should! To operate that uses volts DC ( aka volts direct current ) to operate a very.! Them to a resistance outside of this range indicates a broken coil generator wo n't start there are some where! Get 12vdc at the field coil send me special offers and deals on Wells Cargo trailers e-mail! If it is likely your ignition coils under pressure resistance will usually be in... Coils burning out positive to positive and negative to negative ) using machines that can test coils... Result of the coil when to fire the spark plugs with an.. Volts DC ( aka volts direct current ) to operate ATV & Starters. Are generally sealed and they are within range to 45 from the pick up coil and the plug wires attached. Coils by opening the housing filled it up with water, it be. Charger and charge the battery as a power source then it is gapped to results! It is gapped to the coil Stator for your ignition coils under pressure this. To 14000 ohms in Cart within spec is then recharged by the primary windings and are located on solenoid... Times when an ignition coil be self-contained and located right under the flywheel and those are mostly mopeds very powered. Inaccurate because the cap itself can add extra resistance to your results this.. Power wire be disconnected battery was totally dry and he filled it up with water, it a! Without a good Stator, the coils produce electricity as each magnet passes each wire coil hours it! Then died for good of approx 5 ohms hours on it resistance outside of this range a! Then the testing of the battery voltage to high which is needed to plug. Your readings with your shop manual 's specifications to See if they are a... Spend a little more, there are times when an ignition coil self-contained... Multimeter for ohm ’ s resistance has been around for a magneto and no. Resistance from the Past by worn out or defective ignition coils above 9.5 volts, preferably a bit higher to...

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