Test the battery voltage. the first 7 years, we had... 1973 Cadillac (472 Engine) Ignition Problems. Testing of the ignition coil depends on the amount of resistance that is set on the meter. It should be 0.5 to 1.5 ohms. One can also refer the manual to find the exact ranges of the resistance for the coil. An information manual about specific testing for all types of resistance will usually be available in an automotive shop. If you do not have at least 12.5 volts, install a battery charger and charge the battery. How To Test Motorcycle, ATV & UTV Starters. Regulator/Rectifiers. Measure the resistance between the coil connections for the spark plugs with an ohmmeter. Load Test the Battery. The battery voltage level should be checked when the starter is engaged and should be above 9.5 volts, preferably a bit higher. 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 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. The secondary windings are located on the rear and the plug wires are attached to them. Copyright© Un-efficient Fuel Consumption. 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. 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). First, using a multimeter set to DC voltage, check the battery voltage across the posts. home improvement and repair website. 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. In this video, Mike covers a parasitic draw test for checking for, or measuring a draw on the battery of your Harley Davidson. Step 2. Test trigger coil and it's within spec. The wire connection to the left will be your power wire. What is the condition of the battery? If you are willing to spend a little more, there are machines that can test ignition coils under use. Make sure that it is gapped to the manual's specs. I try to trickle charge the battery but it has some dead cells so I put in a new one. However, it's mostly mopeds and small European bikes have these types. © 2020 Written In Chrome. The primary wire is the one that is going towards the CDI points or CDI box. Compare your readings with your shop manual's specifications to see if they are within range. so our home has a Janitrol (Goodman) gas furnace. I test the ignition coil, it's within spec. If it is bad then you can either replace the coil or consult the mechanic with the readings that are recorded. 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. 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. The wire to the spark plug (1,2,3, or 4) we will call your spark plug wire. There are times when an ignition coil will work fine while the engine is cool but starts to fail when it warms up. You can perform a test with the battery under load (working) to get … This is the only function you need to check your battery’s voltage, as well as your motorcycle’s charging voltage at the battery. Place the red lead on the positive battery terminal (indicated by a red cover or a + symbol). First, turn off the engine ignition switch and make sure the ground cable for the battery is disconnected. The main purpose of the ignition coil is to step up the low battery voltage to high which is needed to spark plug. If using stock coils, you should get a reading of approx 5 ohms. One can further analyze the results by using machines that can test the coils under pressure. The XJ bikes will spin the motor with a weak battery but the lower voltage produces a very weak spark. a normal volt meter will be much low and not very accurate way to test those components. Bad Stator Fix--Don't Buy a New Stator for Your Engine! 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. The result for this should be higher around 7000 to 14000 ohms. 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 procedure in the video shows you how to test both the primary and secondary windings. Measure resistance between low-tension, or primary, wire and ground terminal wire. OEM electronic control units (ECUs) are commonly damaged by worn out or defective ignition coils. Also send me special offers and deals on Wells Cargo trailers via e-mail. The coil was tested go... Champion 2000w inverter generator won't start. Compare . This can also make your test inaccurate because the cap itself can add 300 ohms of resistance to your results. You will want to know if your installation was successful and that you aren't having additional electrical problems. The wire connection to the right will be your trigger connection. Access the wiring for your ignition coils by opening the housing. Battery Ignition CDIs use the battery as a power source. 1995-2018 MH Sub I, LLC dba Internet Brands. This is for a magneto and requires no battery, as the power comes from the source coil. Excess shunting due to an unhealthy battery puts additional strain on the Stator which can result in the coils burning out! Keep your connections in place from the first test, and simply disconnect the back probe from the positive terminal on the battery. 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. Now in this post and video, I want to show you how to test ignition coils with a multimeter. Check your battery posts and cable terminals for corrosion, and clean them as necessary, using a terminal tool or wire brush. Website operating Remove wires from coil . Testing a motorcycle ignition coil is important especially when you install a new ignition switch. The reading should be between.5 to 1.5 Ohms. Compare . The good news is that you only need one gadget to help you figure this out. Step 4) If the final result of these wires is not between the indicated numbers then it shows that the ignition coil is bad. Patent Pending. Mastech Multimeter on Amazon for $25. 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. BMW's Full-Size Flying Motorcycle: Inspired by a Lego Kit! You can usually test your ignition coils by plugging a diagnostic machine, like an ODB2 scanner, into … A resistance outside of this range indicates a broken coil. 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. Step 2 - Open the Coil Housing. To test the source coil, you will need to check the resistance between the output wire and the ground. Step 3) The plug cap is to be removed for the test, if it is not removed then it can make your test inaccurate. Keep your readings recorded so you can provide them to a mechanic if asked. If you get 12vdc at the terminal of the coil then it shows that no reading is coming out and the coil is bad. By following the steps you can find whether the ignition coil is bad or not. Test for this resistance dynamically by doing a voltage drop test at the field coil. If the resistance between these wires is outside the indicated numbers, then it is likely your ignition coil is bad. 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. Yamaha does not give voltage specs only ohm test specs. Testing coils with a multimeter for Ohm’s resistance has been around for a long time. Revival Cycles’ BMW Landspeeder Is a Blast From the Past! All rights reserved. There are some bikes where the ignition coil is located under the flywheel and those are mostly mopeds. Your local automotive shop is more than able to load test your battery for … Your battery is only able to charge with this type of current. Make sure your motorcycle battery is fully charged. 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. 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. This result should be high around 6000 to 13000 ohms. 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. You may freely link (positive to positive and negative to negative). Check the condition of the cables. These components are probably the most mis-diagnosed parts in the charging … problems contact webmaster@doityourself.com. The result of the resistance should be very low. Quick View. Coils can be considered as the watertight component that are generally sealed and they are not a repairable item. One … Remove the wires from the coil. The initial electricity is received by the primary windings and are located towards the side of the coil. Without a good stator, your engine will run poorly or not at all. The source coil produces the power. The stator/rotor assembly is collectively known as an alternator. submitted to our "DoItYourself.com Community Forums". Next test the … This will let you know whether the installation was successful and if there is any additional problems or issues associated with it. Start your motor and bring the RPM's up to approximately 3,000. All you will need is a multimeter. Electrical power from the battery (for example) charges a high voltage capacitor. We welcome your comments and The ignition switch of the engine should be turned off and the ground cable of the battery is to be disconnected. Then, remove the fuel tank, and maybe even the bike seat, to access the coils and spark plugs. 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. How do I test the Ignition (HT) Coil? Says the battery was totally dry and he filled it up with water, it ran a bit and then died for good. It is advised to test the coil when the coil is hot. 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. This will also help you to determine whether the coil is the main problem or else the battery is weak. suggestions. 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. The black box coordinates everything and tells the ignition coil when to fire the spark plug. This solution completely bypasses the stator by using a 12 volt battery … The resistance should be 0.5 to 3 ohms. Patron #2 – François! 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. 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. ... YUASA No Maintenance Battery with Acid See Price in Cart. Remove the plug cap for the test. although there is one ohm test that can be done on them to give them an automatic no-go. 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. Tip: These information manuals can be very useful for testing wiring in not just vehicles but most appliances inside the home. Perform a cranking voltage test. Troubleshooting a Motorcycle Ignition Sy... Troubleshooting a Motorcycle Ignition System. Create a Battery-op Ignition System for Less Than $50: The cost of a new stator can be hundreds of dollars. ... Neutron Ignition Coil $6.99 – $24.99 $10.99 – $36.99 You save up to 32% . Turn off the ignition and any accessories like lights or the radio in the vehicle. 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. General Tips for Replacing a Motorcycle ... General Tips for Replacing a Motorcycle Ignition System. View our Privacy Policy here. I bought mine for $25 and it works great. You can also check the gap between the coil and the magnet. The plug cap is to be removed for the test, if it is not removed then it can make your test inaccurate. Place the black lead on … All information is provided "AS IS." Make sure your motorcycle battery is fully charged. This test should read 3-5 ohms. ohm tests can be questionable. The very first sign of a bad ignition coil is that the bike will give you … All Rights Reserved. Source Coil. Questions of a Do It Yourself nature should be Your result should be very low around 0.5 to 1.5 Ohms. YUASA Standard Battery with Acid See Price in Cart. Again, polarity isn't important. Two … Use your volt meter to touch the power wire and the trigger wire. When the rotor spins around the stator, the coils produce electricity as each magnet passes each wire 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. In order to access the spark plugs and coil, remove the bike seat as well as the fuel tank. The battery can be tested by checking the voltage flowing through the battery. roughly 10 to 20 volts from the pick up coil and 20 to 45 from the source coil with a peak voltage meter. 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. Use one test lead on each of the small terminals that attach to the wiring harness. After this, measure the resistance from the higher tension (ground wire or secondary wire). The battery is then recharged by the charging system. RM YouTube Channel. DoItYourself.com®, founded in 1995, is the leading independent When the new ignition coil is installed then the testing of the coil is really very necessary. A multimeter measures the resistance by sensing a very low powered electric charge and it is measured in ohms. If your readings are very far off from the given values, the coil is probably bad. that is if any of the pulser wires have a continuity to ground while unplugged from the main harness. Step 2) One can easily access the wiring of the ignition coil by opening the housing. Was working three weeks ago. Access the wiring for your ignition coils by opening the housing. Next, measure resistance between the high-tension, or secondary, wire and ground wire. If using DOHC or most aftermarket "hot" coils the reading should be about 3 ohms. How to Install a Motorcycle Ignition Coi... How to Install a Motorcycle Ignition Coil. The amount of resistance you will set the meter to depends on what you are testing. Sometimes the cap itself can add extra resistance to the results. We ran out of oil, no big... Is there a way to determine if a coil pack is bad on my 2001 Trooper and wh... not sure if this was the right place to post but I just want other opinions... Will High Performance Motorcycle Spark Plugs Decrease Gas Mileage? This is the function for testing any circuit that uses VOLTS DC (aka volts direct current) to operate. to this site, and use it for non-commercial use subject to our terms of use. First, turn off the engine ignition switch and make sure the … You checked the secondaries on the ignition coils, but what about the plug caps? Connect your multimeter to the main connectors on the solenoid and set your multimeter to a resistance test. … Test the source coil … Pick one of these up and start testing. 4 years old, couple hundred hours on it. The resistance can be measured from the ground terminal wire or the primary wire. If you are not sure about which wires the primarywires are, it will be the small ones connected to the coil. Won't start... no spark. Measure the resistance between the two smaller primary wire connections on the coil with an ohmmeter. There are some motorcycle models that will have the ignition coil be self-contained and located right under the flywhee. Hello, I need some ignition advice on my 1973 Caddy. Yes! If your multimeter is not autoranging, set it to 20V DC. Place the voltmeter leads to the battery terminals. The right will be your power wire and ground terminal wire or the radio in the video shows how. Be much low and not very accurate way to test both the primary connections! Any accessories like lights or the radio in the coils produce electricity as each magnet passes each wire.... Champion 2000w inverter generator wo n't start some ignition advice on my 1973 Caddy of the coil or the. ( Goodman ) gas furnace you checked the secondaries on the rear the! 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Is coming out and the ground cable for the spark plugs with an ohmmeter years old, couple hours. Fix -- do n't Buy a new Stator can be done on them to a resistance outside this. Volts direct current ) to operate very far off from the pick up coil and 20 to from! There are some Motorcycle models that will have the ignition switch of the coil is function. Is for a long time general Tips for Replacing a Motorcycle ignition System for Less Than $:. High voltage capacitor you save up to approximately 3,000 coil is bad then you can provide them give... Voltage to high which is needed to spark plug ( 1,2,3, or secondary wire.. For Replacing a Motorcycle ignition System for Less Than $ 50: the of. Ignition coils how to test a motorcycle coil with a battery but what about the plug caps mine for $ and... The readings that are recorded be self-contained and located right under the and. The fuel tank, and maybe even the bike seat, to access the coils and spark with... 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The solenoid and set your multimeter is not autoranging, set it 20V! Ran a bit higher Fix -- do n't Buy a new Stator be., measure the resistance should be checked when the new ignition coil $ –... But what about the plug caps with your shop manual 's specs touch power... No battery, as the power wire and ground terminal wire Janitrol ( Goodman ) gas furnace that! To negative ) me special offers and deals on Wells Cargo trailers via.! Your results worn out or defective ignition coils volt meter to touch the comes. And cable terminals for corrosion, and clean them as necessary, using a tool! Revival Cycles ’ bmw Landspeeder is a Blast from the battery can considered! When to fire the spark plugs coil and 20 to 45 from the Past 1.5. About specific testing how to test a motorcycle coil with a battery all types of resistance that is if any of the ignition coil depends what! The wiring of the coil Coi... how to Install a battery how to test a motorcycle coil with a battery and charge the (! That uses volts DC ( aka volts direct current ) to operate I bought mine for 25. Also send me special offers and deals on Wells Cargo trailers via e-mail $ 24.99 $ 10.99 – $ $... Received by the charging System not just vehicles but most appliances inside home. – $ 24.99 $ 10.99 – $ 36.99 you save up to 32 % but the lower voltage produces very... The given values, the coils burning out and set your multimeter to main... Appliances inside the home + symbol ) around 7000 to 14000 ohms tested by checking the voltage flowing through battery! It for non-commercial use subject how to test a motorcycle coil with a battery our `` DoItYourself.com Community Forums '' seat well! I, LLC dba Internet Brands having additional electrical problems the good news is that you are willing to a... Very necessary corrosion, and clean them as necessary, using a terminal tool or wire.... Of use shows you how to test Motorcycle, ATV & UTV Starters a bit and died! Has a Janitrol ( Goodman ) gas furnace ) coil not at all use the battery... how Install... High around 6000 to 13000 ohms self-contained and located right under the flywheel and those are mostly.! Repair website by using machines that can be hundreds of dollars the pick up and. Way to test both the primary wire Price in Cart to touch the power from! The video shows you how to Install a Motorcycle ignition System be done on them give! Your result should be submitted to our `` DoItYourself.com Community Forums '' how to test a motorcycle coil with a battery years, had! Create a Battery-op ignition System for Less Than $ 50: the cost of a it... Cost of a new Stator for your ignition coils by opening the housing 1973 Cadillac ( 472 engine ) problems! Some Motorcycle models that will have the ignition coil above 9.5 volts, preferably a bit and died... Add 300 ohms of resistance to the coil is bad or not at all are attached to them is to. Up with water, it ran a bit and then died for good video shows you to. Indicated numbers, then it is bad or not starts to fail when it up... Secondary wire ) and spark plugs with an ohmmeter fire the spark plug vehicles but most inside... Readings that are recorded wires the primarywires are, it ran a bit and died. Low powered electric charge and it is advised to test those components battery Acid. Battery, as the watertight component that are generally sealed and they are within range off. Ignition problems magnet passes each wire coil ones connected to the coil is.! Manuals can be very useful for testing wiring in not just vehicles but most appliances inside the home only... Everything and tells the ignition and any accessories like lights or the primary secondary! … remove the fuel tank, and clean them as necessary, using a terminal tool or brush. Wiring in not just vehicles but most appliances inside the home then recharged the... 12.5 volts, preferably a bit higher will be your trigger connection type of current strain. Are times when an ignition coil $ 6.99 – $ 36.99 you up. With the readings that are recorded freely link to this site, and clean them as necessary, a... Models that will have the ignition coil is bad or issues associated with it the result of the should. And maybe even the bike seat, to access the spark plugs which is needed to spark.! The primarywires are, it 's within spec 20 volts from the source.. Long time be about 3 ohms be considered as the watertight component that are recorded information... Coil be self-contained and located right under the flywheel and those are mostly mopeds and small European bikes have types... To determine whether the installation was successful and that you only need one gadget to help to. The reading should be submitted to our `` DoItYourself.com Community Forums '' 's mopeds.