Can I perform the resistance test without removing the ignition coil from the car? This way you don't risk damaging the COP ignition coils connector terminals. you must read the user manual. On most scanners, a code P0352 indicates that your coils aren’t working correctly. eval(ez_write_tag([[300,250],'gardentoolexpert_com-box-4','ezslot_12',109,'0','0'])); You must remove the spark plug of your chainsaw using a spark plug socket which is a special type of wrench. To find out which contact will correspond to the primary winding, you must consult the user manual of your chainsaw. Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. 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. Sometimes a plastic cover is used in concealing the coil for safety reasons, Rocco Lovetere is a Master Mechanic at Rocco's Mobile Auto Repair in California, which he owns with his family. The spark plug tester will also help you prevent the dust, dirt, debris, butterflies, or twigs from entering the combustion chamber of your chainsaw. What will make this possible is if you use a wire-piercing probe to attach to your multimeter leads. firmly the point of the leads of the multimeter to ensure that they are Meter Test: 1. complete resistance or no connectivity at all. Now, set the on/off switch in the “on” position. If it is not possible to break into the circuit in any way, it is possible to use a current sensor. It will, however, still be flooded with fuel, which may cause serious damage. protection. If these letters … These wires 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). Now touch the probes with each other. eval(ez_write_tag([[336,280],'gardentoolexpert_com-large-leaderboard-2','ezslot_17',111,'0','0'])); Another option would be to use a special small engine ignition coil tester. Your multimeter will This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Here you can find a new sparkplug for your chain saw, If you do not have a multimeter you can find a good one here. Here you can find a new sparkplug for your chain saw. Flip off the on/off switch. If the readings are outside that range, remove and replace the coil. The final possibility you may observe is that. By using this service, some information may be shared with YouTube. A brief answer The ohm meter can also be replaced by a digital model called a multimeter, which is a standard tool used for testing the presence of electric current in items—the multimeter measures resistance. If your multimeter displays a reading above the specified level it is an indication that you will also have to replace the coil of your chainsaw because it is open. You must note % of people told us that this article helped them. both sides. see any spark it means that you need to replace the coil of your chainsaw as it Now you must Ground the alligator clip. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. The bright blue spark is visible clearly in daylight but if you don’t If you find any stiffness or wear in the links or rivets of the chain then you must replace it immediately. are so simple to remove because they are held in place by only one or two If you find that the primary winding or the secondary winding has a reading a little above or below the specified range then it means you must replace the old coil with a new one at once because the current one is malfunctioning, otherwise, your chainsaw will get damaged beyond repair. And if you see an orange spark it means that the coil of What if the coil tests good, but still no spark? otherwise your multimeter will display inaccurate readings which will include Connect your multimeter to the positive terminal or pin of your coil, and to the high output terminal that goes to the spark plug. Anything that is leftover inside the hole will damage the entire engine of your chainsaw so you must keep this hole covered with a piece of dry cloth to prevent anything from falling into the combustion chamber of your chainsaw. of your chainsaw has three electrical contacts, one in the middle and two on Look at the reading The average Then, without priming, try restarting with all systems on. Feeling lonely and sad? You must ensure that the chain and the bar of your chainsaw are getting enough oil. Ignition Coil Primary & Secondary Resistance Testing - YouTube It will be marked with a + sign, or it might only be indicated by a number. What do the labels SW and CO mean on LUCAS ignition coils? Using the ohm function check the primary and secondary sides for opens or very high resistance. must keep one lead on one of the outer electrical contacts. If there’s a fourth wire, that one sends a firing confirmation signal to the PCM. Cranking a depressed chainsaw without a working interlock is dangerous without using a drop start, so ask for someone’s help. If you do not How to fix an electric pressure washer from repeatedly turning on and off? Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. your chainsaw to sit and cool down for at least 15 minutes to prevent any and the multimeter remains at “one” it indicates that there is no is malfunctioning. Rotate the flywheel until the magnet embedded in its rim is opposite the coil … As with most types of vehicular maintenance, you'll want to begin the test with the vehicle in park and with the engine off. The plug wire runs from the ignition coil to the plug cap. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. 0.4 to 2 ohms, but you must research for the accurate primary readings of your I have performed those tests and it sounds like my coil, "My 1990 Honda Civic is very hard to keep healthy and running, so I'll need to fix it myself. Usually, you'll need to disconnect it from the distributor wire, then unscrew it from its mounting with a wrench. SW is switch, usually meaning the starter key/ignition switch. The procedure involves using a digital multimeter (set to ohms) to check the resistance of the primary and secondary windings inside the coil. Will a good resistance reading guarantee a good coil? One terminal is supplying current from the ignition switch, the other is connected to the coil. The … Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Then, attach the negative probe to the negative terminal. Step 4: Multimeter Test With New Wires Testing an almost brand new wire, these were replaced about 5000 kilometres ago. 13: Connect the multimeter to the secondary coil and measure. multimeter and remove the coil from your chainsaw to get easy access to its out the resistance specifications of the coil on your chainsaw. you must make sure that you have put on a good pair of rubber gloves and eye Approved. Check your car's wiring diagram to confirm. chainsaw specified in your user manual. then disconnect the coil from the distributor wire.eval(ez_write_tag([[300,250],'gardentoolexpert_com-leader-2','ezslot_20',114,'0','0'])); Use a wrench to If you do not have a multimeter you can find one here. Can You Start A Pressure Washer Without Water. engine of your chainsaw it means that the coil of your chainsaw is working While others have two terminals or two pins which are located at their We are compensated for referring traffic and business to Amazon and other companies linked to on this site. ", "I didn't know that you could test a coil without changing it.Thank you. If one of the windings is open the coil is most likely completely dead. Remove the coil by undoing the securing bolts with a nut driver and unplug the green kill-switch spade connector from the bottom of the coil. will start in 1 or 2 pulls. Typically, the primary resistance should be somewhere between 0.4-2 ohms. cause serious damage to your chainsaw because it will be flooded with fuel. the “off” position. Generally speaking, most automotive coils will have a resistance reading of about .7 - 1.7 ohms for the primary winding and 7,500 - 10,500 ohms for the secondary winding. 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