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How Do You Test An Ignition Coil

How Do You Test An Ignition Coil - One end of the primary and one end of the secondary are connected together and connected to the laminated core so you can test that with an ohm meter, should be high resistance (over 5k) between plug lead and coil core. Most generally when they are not firing the points are the problem. If you have the service manual for the saw the coil came from, you can use a meter and ohm the leads out. Anyway, the part i'm after is an ignition coil on the one i have it has 1130. The only real legitimate test on an electronic coil is to check the secondary (ht) side only. This will allow a before and after indication. Measuring kill wire resistance on an electronic coil is pretty much meaningless unless you find an open circuit in which case the motor won't shut off. But what if you don't know any of the above. Look like i have an ignition coil issue , no spark, changed spark plug. Not sure how to test , i'm having issues finding the part, stihl just recommended a local dealer , and they said probably to look at £100+ !!!!!

Look like i have an ignition coil issue , no spark, changed spark plug. One way i test my coils is to place a screw driver in the plug boot and have my wife to hold it while i crank the saw over. The guys have already told you how to test a magneto coil and the spark plug wire. Test by pushing a pin. So may get rid of the lot and buy ego battery kit. When the points are open the resistance across the coil and points in parallel will be about 1.0 ohm (the coil’s wire. You will know quick if it's bad or not. To tell everyone the truth i only ever run one test on a coil, if you have no spark with the kill wire disconnected then the coil has to be bad. Make an electrical resistance test with your digital multimeter before attempting to clean the contact surfaces. Note that the points are in parallel with the primary coil.

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I Have This Ignition Looking Assembly That I Unbolted From The Back Of The Flywheel On A Stihl 031 Av.

To tell everyone the truth i only ever run one test on a coil, if you have no spark with the kill wire disconnected then the coil has to be bad. I'm having ignition problems and i just wanted to know if there is a. One way i test my coils is to place a screw driver in the plug boot and have my wife to hold it while i crank the saw over. The only knowledge i have is from the online searching i've done today.

Measuring Kill Wire Resistance On An Electronic Coil Is Pretty Much Meaningless Unless You Find An Open Circuit In Which Case The Motor Won't Shut Off.

If you have the service manual for the saw the coil came from, you can use a meter and ohm the leads out. If you are getting fire and fuel at the right times, then it is going to be a compression issue. You will also likely get different resistance if you swap the leads. This will allow a before and after indication.

Make An Electrical Resistance Test With Your Digital Multimeter Before Attempting To Clean The Contact Surfaces.

The points type magnetos very seldom go bad. The only real legitimate test on an electronic coil is to check the secondary (ht) side only. One of my manuals states that if the ohm's are out of the range the coil is no good. If test shows open circuit make sure it isn't just a bad plug lead such as bad connector on end of lead.

You Will Know Quick If It's Bad Or Not.

When the points are open the resistance across the coil and points in parallel will be about 1.0 ohm (the coil’s wire. Look like i have an ignition coil issue , no spark, changed spark plug. The manual will give you a range of what the ohm's should be. This test usually only works one time if the coil is good, but you may get to do a few test at least before you get a good one.:msp_smile:

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