How to test a small engine coil using a Multimeter.

In this video we are going to test some coils from various machines to see if they are good or if they are ready for the bin. #testingcoils #smallenginerepair

This video is NOT sponsored. Some product links are affiliate links which means if you buy something we'll receive a small commission.

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[Bensgarage]

A cheeky Tuesday video for your entertainment. Hopefully you will have learnt something from this one.

[MrDogfish]

Every single video on this subject (not just yours) are like “here’s how to test a coil. I don’t know what the numbers for this unit should be but it’s showing some numbers so this one is good. I won’t mention what numbers you might expect for a bad coil, or what goes wrong with a coil or anything. Hope that helps!”

[rodgraff]

You are only testing the secondary of the transformer. The primary, with its electronics, has to be tested also. That is what failed in my coil. You test the male spade terminal where the on of switch connects, to the metal part of the coil. There should be a reading in ohms, but much smaller. Mine was open. The on off switch, and it’s wiring shorts the primary coil to ground, shutting off the machine if the switch or wiring is shorted, the machine won’t start either.

[petersack]

5:04 Hi Ben, from Alberta Canada. That gap, between those coil pickups, and the rotary flywheel, should be 10, 000 of an inch. Or, the thickness of a standard business card. They work well, and are just the right size. Thanks.

[onceawhile]

Thank you this will help me with my small engines test at school

[mickwolf]

Ahh that's good, I picked up a blower with weak spark and coil reads 3.98k ohm. Spark plug centre electrode reads 18.6k ohm so might try a new plug and get new fuel primer lines. Thanks

[volkmarmaleika]

I have learned something, THANKS... How is this, I have a NO SPARK condition and the coil was test by a shop here in Seguin TX good, but after reinstalling still no spark. Yesterday it ran a little while, and latter never again. I tested the coil with 20K OHMs and got a -1 reading... a sign it has gone bad..

[runningremingtons]

Thanks this video has helped me a bunch of times

[jaimeramirez-ztdd]

My southland edger has a reading of 10.59 at settings 20k ohms on multimeter and it wont spark the sparkplug unless i remove the ignition and kill switch wires

[enricotheunissen]

188F
WF150508
What is the reading i should get to make sure its still working as there is no spark when doing the sparkplug test

[TheUltimate]

Its the test the same fore coil fit on engine wihout magnetic ignition too, kiopor ig 770 fore exsample

[skinnypuppy]

That’s what I’ve learned about testing coils, however I called the saw shop today and they told me that that test doesn’t work.
Can you believe that, they told me, that test doesn’t work.
One of the oldest saw shops in my area says that test doesn’t work.
I’m not impressed

[alexburdsall]

I’m only getting 1.68, is that enough to get spark?

[tobesmith]

How are you getting an accurate reading by hooking the positive to the ignition wire of the coil on the unit and then hooking the ground to the coil off the unit

[mrnuthatch]

I'm so bad with electrical. Can someone explain why the coil is outputting information even when the magneto isn't passing it?

[antking]

Was the bloke who invented the Multimeter called Sherlock Ohms?

[zandor]

thanks for posting -am trying to get a spark on an little used but fairly old Honda generator -am told the coil module is obsolete and not obtainable- could a substitute be used and could the coil/spark module be repairable

[RockyBaker-co]

I like them glasses.. thanks for the video

[thomaselliott]

So what should the reading be if the coil is bad??

[FF]

Looks good in checking secondary resistance. That's just one step. How do you test the embedded primary circuitry in seal(potted) ignition coil pack? Thanks for the instructional video.