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PushMowerRepair.com - Briggs Ignition Coil Testing

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This videos shows how you can Test a Briggs And Stratton Ignition with a Multimeter and Determine whether it is in good or worn Condition.
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Опубликовано:

30 авг 2014

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Комментарии : 95

@seansvid 5 лет назад

Just be aware, a coil can show 2.8 kOhm and STILL be bad. I just replaced a coil on my mower that showed perfectly good resistance but produced no spark. With the new coil installed, the mower runs great.

@leftywhat 6 лет назад

The two ignition coils I have both tested 4.68 kilo-ohms (on lawn mower) and 4.72 kilo-ohms (spare) . Lawn mower wasn't starting. Root cause, sticky dirt on the ends of the coil between it and the motor magnets. Cleaned with methylated spirits, reassemble, alive :D

@jenniferhertzler720 7 лет назад

Great video. Was not 100 percent sure it was the ignition coil until I watched your video. Tested ignition coil with multimeter while it was hot and it had too much resistance. Replaced and now my mower runs great again. Thanks!!!!

@acetech9237 5 лет назад

Thank you I subscribed because everyone else makes these long ass videos for a simple explanation. You helped me verify my issue and get back running. I appreciate your help.

@sst568 5 лет назад

That drives me crazy too! Just get to the point, like this dude does!

@haulem 5 лет назад

Great video. Simple, direct and straight to the point without all of the useless yak, yak, yak.

@johnyonggee3684 8 лет назад

Thank you. Just what i was looking for as i couldn't find much in the Service and repair manual regarding multimeter testing of the ignition coil. Also the video was good in that there was not a lot of crapping on and it got right in and showed what to do. Thumbs up!

@Bruce-fy4sw 7 лет назад

Great video!!! To the point without useless chatter. Nice job!

@kd5dvmkatdaddie114 5 лет назад

No nonsense and cut to the quick video. Great job. I know what you said to be true. I was looking for "something new" but your video tells me what is best. It works.

@kk5sc 9 лет назад

Good video, which allowed me to determine the root cause of my ignition issues - Thank you!

@marksloane4176 7 лет назад

Thank you very instructive and problem solved reading was 5.96 OHMS @ 20k - so off to local shop to buy. Cheers

@derekhobbs1102 5 лет назад

This is just the info I needed, as my old starts fist time every time Massport now has no spark. New plug helped for a couple of runs, but dead now.

@jamiewheeler2585 7 лет назад

Great video, EXTREMELY helpful!

@JimLBon 5 лет назад

5.4 ohms... new coil it is! Thanks for the info, great video!

@MartyMartin87 8 лет назад

Ok I have checked my ignition coil at my briggs 5hp engine and is has ~ '2.80' resistance . The problem is that there is no spark, so the ignition coil is 'good'. I think the cap is the cause of this problem. Thank you, your clip was very helpful!

@joelb1698 6 лет назад

So between 2,5-5,0 ohm. That's what I needed to know, thanks!

@canosouped 4 года назад

Hmmm between 2.5-5.0k ohm... and I'm at 4700 ohm but can't get a spark on a good plug. Still within the range but I guess probably still an issue with the Magneto/Ignition . Thanks for the vid, helped a lot!

@rickeykeeton71 4 года назад

Do those coils not have primary AND secondary to check?

@vetterfellow 7 лет назад

Thanks, This is just what I needed to know !.

@addie750 8 лет назад

Thanks for the information! I greatly appreciate it.

@joegonzalez397 4 года назад

Exactly what I was looking for. A video clip that's short and straight to the point.

@capeman10 8 лет назад

Thank you for the video. My mower stop running, I tested the coil and got 7.68, just ordered a new coil off eBay.

@MarkWheelerII 6 лет назад

Did this fix your problem? Im getting about 7 on mine and it isint sparking!

@waggitnshaggit6592 4 года назад

I was getting 2.78 but spark was there then totally gone tried cleaning up mounting area,disconnecting kill switch,new plug,checking air gap but no dice.So is it like there is a primary and secondary coil?and this only tests one?anyway replaced with new coil runs great.Thanks for putting up video just looking for answer.

@daddyosink4413 5 лет назад

This works for pretty much any small engine, never knew it was that simple. My problem is when the engine gets hot.... it's like the coil is "breaking down" at operational temp because there is fuel, but spark goes away(used an inline spark tester)... any suggestions? Thinking about just changing the coil, but dont like wasting money....

@glen3993 8 лет назад

thanks dude you help show me how to test them

@MrGarcon98 7 лет назад

nice , dont you wanna check primary and secondary on the coil ? nice vid

@rickeykeeton71 4 года назад

I just asked the same thing.

@Booksince72 5 лет назад

Thanks!! Simple,and to the point!! My reading was 6.9!! Yikes!!

@roonzacar7276 10 лет назад

Good video, thanks.

@jrhAus 7 лет назад

thank you, very concise and helpful.

@trevorgregson8753 6 лет назад

Thanks For the video, What if you have a twin cylinder?

@markbatten5178 7 лет назад

Thank you!

@brianmott728 5 лет назад

I own a walk behind mower with a Briggs and Stratton engine that will barely pick up the gas 9 times out of 10 when I pull the rope. Carb cleaner will get it started and it keeps running with fuel in the tank. Is that an ignition coil or a coil wire issue?

@jeep2003 5 лет назад

there should be a diaphram gasket between the carb and tank. these get hard and dont pump well anymore. easy fix. just make sure you get the right one with the correct number of mounting screws there are a few different ones

@rod1148 8 лет назад

My lawnmower (Briggs & Stratton 625) starts fairly well cold. Might take 2-3 pulls. Runs fine until I have to shut it off if I have to clean out the side discharge etc. But often can't restart it. I've used an inline spark tester--shows good cold but VERY weak when it's hot after shutting it down. The puzzle is that it runs fine hot until I shut it off. I suppose heat could build up when the fan isn't running while I'm cleaning out the discharge chute ....? Is this likely to be ignition coil? and how can I test it when it's hot? THANK YOU!

@Pushmowerrepair 8 лет назад

This is a common symptom of a worn coil, As they get hot resistance increases and spark becomes weak. It is easier to keep an engine running then to start and engine this is why they still run hot but then will not restart until cold. You can test you coil While on the mower by connecting the multi-meter leads to the spark plug lead and then to the cylinder head. You should do this while cold then while hot to compare readings.

@rod1148 8 лет назад

This is exactly the information I was looking for. THANK YOU! The coil tests at 4.90K ohms cold. I haven't tested it yet hot. But from what you said above I'm pretty sure a new coil is due soon.

@saadalghamdi3203 5 лет назад

Thanks man . Nice job . Is that work for al coil

@ramdanelimam7620 4 года назад

Hello I have a chainsaw homelite 340, its coil ignition burns, I have not found on the market a replacement for the same model, can I use another model of a other brand? thanks for your vide

@billericaybruce 8 лет назад

This is useful information and checking my B&S coil this way I have a resistance of 2.66K ohms. But I still get no spark. However, the resistance between the cut-off connector and ground is zero. This can't be right, can it? Any idea what this should read? Is my coil dead?

@billericaybruce 8 лет назад

+billericaybruce In fact, resistance between the cut-out connection and ground is maybe not zero but definitely

@Pushmowerrepair 8 лет назад

+billericaybruce The cut out connection is meant to connect the coil to ground eliminating the spark, So it should read very little resistance, However it should not be connected unless the throttle is in the off position.

@billericaybruce 8 лет назад

Thanks. In fact, I was measuring the resistance between the cut off connection point and ground with the coil out of the mower, on the bench.

@Goodbrew 4 года назад

@@billericaybruce Hi mate I have the same issue today what did you work out eventually ? Sorry 3 years ago !

@real998877 5 лет назад

If you measure the resistance from the stop switch connector to the coil body with no stop switch connected, what should the resistance be?

@frase1234 6 лет назад

Dude... What would be a better reading, something like 2.78 or 4.50 ? ... I'm thinking 4.50 (although its still in spec) it might be on the way out and maybe better to use the one with the lower reading.... is this correct ? AUSSIES RULE !

@thesmithfamily2804 8 лет назад

great video! I did the old spark test but like to have actual specs to double check. Do you happen to know the resistance range for honda push mower coils? Part Number 30500-Z8B-901. Mine test >9.0 so I'm assuming that too much resistance? '

@Pushmowerrepair 8 лет назад

Hi Kimberly we do not know the range for honda coils so we cannot say whether 9 is a good or bad reading.

@suprfinesunshine333 6 лет назад

Is it possible to have a bad resistance test but an ok continuinity test? The resistance was 11.58, I have a craftsman walk behind mower. Sorry to “pick your brain”, this is new to me.

@tedheim8461 5 лет назад

I have a resistance reading of 4.8 but still no spark, whats next?

@CD0722 9 лет назад

Mine read 4.89. Although this is within range, is it close enough that replacement would be advisable? I ordered the new parts before realizing I could try testing and cleaning them. After cleaning them and the magnet, the mower works again.

@Pushmowerrepair 9 лет назад

Daniel Williamson Although 4.89 is within the range its probably not got too much life left in it. Replacing it would ensure no more ignition problems in future.

@CD0722 9 лет назад

Thank you!

@BillyRillkratz 6 лет назад

thanks

@GmGarlo 6 лет назад

can you test the coil the same way if its on the lawn mower or does it have to be off to test it ?

@mistercut8331 4 года назад

after taking mine off found out you can leave it on, but must disengage the kill switch wire underneath the coil while testing

@geno11x11 8 лет назад

Just picked up a new magneto on eBay. The test between the spark plug lead and ground shows infinite resistance - which means it is bad, correct? The seller sent a second with the same result. Are both new magnetos bad, or could it be different design? Do you recommend installing this magneto and trying it, or is that a futile waste of time?

@Pushmowerrepair 8 лет назад

The reading would suggest that the coil is bad but it may be a newer or different design so install the magneto is worth a shot

@genek3511 8 лет назад

I installed the megneto (above), attempted to start, and no spark. I'm on my third new magneto (this time a Sten brand) that shows infinite resistance between ground and the spark plug lead using two multimeters - 1) digital, 2) analog. What am I missing? I've double checked this, but the magneto is a #590781 for a Briggs & Stratton model 422437-1209-01 on a Craftsman GT-18 lawn tractor. Any suggestions would be greatly appreciated.

@grassroot011 8 лет назад

So is the ignition module integral to the magneto coil? Used to be there was separate points or solid state module that you had to install. Not up to snuff on this. Thanks

@Pushmowerrepair 8 лет назад

Yes the Ignition module is integrated into the coil, This is the case for the majority of modern engines.

@grassroot011 8 лет назад

Thanks, appreciate it.

@addie750 8 лет назад

Could a Briggs & Stratton coil pulling a 4.94 cause a "no spark" condition? Thanks! Good vid btw.

@Pushmowerrepair 8 лет назад

As the reading gets close to 5 the spark is getting weaker and weaker, It is unlikely to cause no spark at all but it is possible

@bobbyfinley3661 7 лет назад

I have a model N briggs. and I cannot find a replacement. so is it possible to repair the broke coil.

@Pushmowerrepair 7 лет назад

There is no simple way to fix a faulty coil

@whorlicks 7 лет назад

where does the power for the coil come from if its not on the machine ? does it come from the meter ?

@Pushmowerrepair 7 лет назад

When testing the coil the meter puts out a small voltage to generate the resistance reading. When on the engine the coil is powered by the rotating magnets in the flywheel.

@whorlicks 7 лет назад

cheers , didnt get any reading from the meter so guessing the coils naff . thanks for reply

@michaeljakus 8 лет назад

So Briggs and Stratton just sold me a brand new bad coil? I get no reading. If I touch the negative probe to one of the smaller leads on the coil (not spark plug lead) I get a reading of 4 to 5 on both my old rusty coil and the brand new one.

@ShadeTree_RC 7 лет назад

mine is reading 5 ohms brand new coil it started and ran out of gas i went to get gas came back and wont fire at all now

@Pushmowerrepair 7 лет назад

If it ran fine until it ran out of fuel it is more likely to be a carburetor issue then spark.

@ShadeTree_RC 7 лет назад

no it just quit firing completely is 5 ohms res. right ?

@Pushmowerrepair 7 лет назад

If the coil is the same model as the video 2.5 to 5 K ohms is a good reading, If it is different the reading will be different. I would suggest checking that the kill-switch wire has not shorted anywhere.

@ShadeTree_RC 7 лет назад

thanks man liked and subbed ur channel

@lmalino695 6 лет назад

@James From nyc My 22 year old mower developed similar valve sticking problem. To immediately free valves, I poured about a tbls of auto trans fluid in combustion chamber and worked it until valves were operating properly. Then I switched to full synthetic oil. That mostly resolved the problem; unit has worked well for 11 years. Depending on how bad a sticking problem yours has, you may want to add a few tbls of trans fluid to crankcase oil also.