No Spark? - Test and replace a Briggs & Stratton Engine Ignition Coil.

[@TripGibson]

I give you a little tip from an old mechanic that's me. I've been doing this for a long time. I never mess with a feeler gauge all you need to do is get 3 x 5 index card and stick that up against the flywheel and let the magnet pull the coil up against the flywheel and tighten it down.

[@HipaParts]

Absolutely a good tip. For these videos we like to show the exact manufacturers recommendations as much as possible but we always appreciate others sharing their real world experience and tips. Thanks!

[@johndowney2539]

@@HipaParts now in

[@45valk]

I used a match book 😂😂😂

[@joecan]

LOL. I use a business cars. The cheap thin ones, not the fancy thick lawyer ones with texture and embossing.

[@bertgrau3934]

​@@HipaParts I've used 2 feeler gages, works fine, or the business card. Both work fine.

[@johnb7956]

Excellent presentation. You may have helped fix my riding mower not starting. It's very hard and very expensive to get help from local service dealers.Thank you 😃

[@ericclark8258]

Well done of explaining install to those who might not be dyi,, this will help us big time. Thankyou

[@HipaParts]

Thanks!

[@richh1576]

When the listed 'fix' does not work, be sure to CLEAN the coil mounting surfaces ON THE ENGINE of oxidation, rust, and corrosion that will insulate the coil from its electrical ground to the engine. Also if the embedded magnets on the flywheel are 'rusted' ... also shine-up the magnet surfaces to 'bright'.

[@durn210]

Clean your flywheel good with a wire brush and sand paper. You will get a better spark.

[@razvan9540]

Thank you very much, very helpful. I appreciate a lot that you made this video, best wishes

[@grassrootstexas]

Eddie, I'm having a hard time finding the right part (coil ignition replacement) for a old 2003 craftsman Briggs and Stratton 625 190cc 917 series push mower? Can I just get a coil that fits the screw holes? I'm a woman and have to do everything myself. Can you help explain if I can interchange the old coil with another Briggs and Stratton coil?

[@conz000]

I did the same test based on your diagnostic.. Now you've got me wondering if its the break or the seat safety that's messing with it... the search continues!

[@bernie6675]

Thanks Good Vid. Do you know where I could get a ign coil for an old Brigs cast iron block with magna matic ignition. .Magnet is right on crankshaft. !950's. External points.

[@fishingwithchance1948]

So what does it mean if it don’t work at all with 3 different coils and still not getting spark

[@wayneberryman4648]

I have same prob.new coil .all clean as .even with kill line pulled off .help

[@rickjames6948]

Can we guess what killed that old coil? All that mud over heated it. That is if the coil is really bad. I would of removed the old coil. CLEANED it up. Polished the mounting areas where the screws go. Needs to have a good ground to the block. Regap/install old coil. Test for spark WITHOUT the kill wire on. Easy right? U R welcome.

[@rrockich]

Did this exact procedure (also including shining up magnet on flywheel and the module armature) to no avail. Found out my B&S engine has an upper resistance limit on the ignition module of 5k. It was showing 5.13k on multimeter and producing only a dim spark on the inline tester. Switched it out for a new one, regapped it, turned the key, and tester immediately glowed brightly and engine started right up!

[@jerrylamontine4821]

Very helpful, thanks!

[@rickeykeeton4770]

That is a different test or than mine. It connects to plug and coil. Can it be tested with plug out of motor?

[@Harold-si7eh]

If you have replaced the coil and still no spark check that spark plug is tight to ground,seat switch under neath,clutch Pedal switch,defective ignition key switch and if your rider has a off safe level switch will kill engine also known as a Incline switch for rollovers!!!

[@robertdaniel2735]

Great video! Thanks.

[@jimf]

Maybe I missed it but since the ignition coil is in a fixed position due to 2 screws, is their a specific rotaional position for the flywheel? In other words is it important to "line up" the flywheel with say the, "on center point" of the ignition coil?

[@brandonhebert5485]

Just rotate the flywheel until the coil is against the magnets of the flywheel. There are not magnets all the way around, just in one small area.

[@Puconista]

Hi guy I change the engine of a troy bilt ltx 1842 put new used engine i was not getting spark soni change the ignition coil but still don't have spark I do have voltage going to the module I have the magneto connected cable toto the right switch connector Turn key on engine turn but still do not have spark Any idea ? O4 how to check the module?

[@stephaneislistening6103]

Hello! May I ask a noob's question? Why do you have the spark plug on the engine to test it ?

[@stephaneislistening6103]

Would you have more explanation on this mysterious kill wire? How it works? Thanks!

[@stephaneislistening6103]

What is the ignition coil used for?

[@stephaneislistening6103]

My Briggs and Stratton 850 Staub brush cutter is not starting.

[@Mike-su8si]

As the engine spins around sends spark to the piston to burn the gas so it'll stay idling its kinda like a piece of the brain to the engine Or is like a power supply to a computer you know without that it ain't gonna work

[@Mike-su8si]

You could hook a switch to it Or splice it into one of the wires to the ignition so once you turn the key to off the engine shuts off

[@danielfigueroa4725]

Would of been nice if you gave the coil part# the link goes to the wrong coil im already 2 wrong coils in on this job😢

[@HipaParts]

What's the model number of your engine?

[@lucasa5363]

thanks dude

[@billstatenational2199]

I cant find the right coil, Do you have a part number on that?

[@Mike-su8si]

Neither can i so im just gonna go with one that looks similar to that one my original coil is more rounded than it looking square like the replacement so I'll get a square one then. And i have gotten new replacement coils in the past that weren't the same shape and the mounting screw holes didn't match so im taking a chance on the square one of its mounting holes not lining up but it should his did

[@paulluongo2756]

That engine souned great....

[@HummBabyBaseball]

I replaced ignition coil and still NO Spark even when removing kill wire.. with Spark tester NO spark! I ordered a brand new one.. installed correctly.. magnetism is strong.. NO spark.. not sure what to do

[@madmanmechanic8847]

I got the same problem with three coils plug pulled out put a spark tester on it good spark put in brand new spark plug and kills the spark wont start been battling it for 5 months and I am a Marine Tech have plenty of these brigs apart and instlled plenty of coils WTF?

[@jimthomas1989]

@@madmanmechanic8847 , take sand paper and shine up all parts where the coil is bolted , it must have a good ground, wire brush the bolts too , probably wouldn't hurt to add a wire from the coil to the engine block

[@madmanmechanic8847]

@@jimthomas1989 Dude are you ready for a nut scratcher WTF story? I do Marine repair for a living and also restore Muscle cars. I got a Briggs NOS coil off of ebay. Before I installed the coil I took my drill and a wire wheel and cleaned the rust off the flywheel ! It is spotless no rust the magnetic part is spotless no rust . I installed the NOS Brigs coil set the gap with packaging from the coil about the thickness of a business card. all wiring all connections for the coil have been flushed cleaned and no rust or dirt. I took a ohm meter and check my ground block for the wire that kills the ignition and it was good was not grounded out. I bought a brand new plug for it. I left out the plug hooked a spark plug tester on the coil wire gave her a nice pull I GOT SPARK O COOL! I installed the plug hook up the coil wire hit the primer bulb got fuel in the system and gave her a pull no no pop no fart no nothing ! I pull the spark plug hook a ground to it to the engine and gave her a hard pull dead as a door nail no spark. Ok well maybe the key way is off for the fly wheel its cracked I order a package of key ways pull the fly wheel not broke but off set a little I though ok this is it I cleaned all of the fly wheel inside and out ! Installed the new aluminum key way tighten the flywheel nut hooked up the spark tester wow great spark installed the plug primed it and cranked it over no pop no fart no nothing deader than a door nail checked the spark again with plug on DEAD NO SPARK When down got another brand new plug put that on same thing passes spark test with no load as soon as I put on a plug to it DEAD NO SPARK! I ordered another mag off of Ebay and ordered the wrong one it was for another engine my mistake. I went down to the parts house took my engine cover down and he ordered the correct coil for it with a life time warranty ! Brought it home and this time I took and adjusted the kill point linkage from the mounting pad for the wire for the coil I made sure the metal tab that kills the engine was far away and not touching . This time I installed the coil to Manufactuers specs the gap is 0.010 to 0.012 I got a feeler gauge and set it rigt on the nats ass 0.10 rotated the fly wheel and it was not touching and I had good gap on both sides of the coil . Hooked up the spark plug tester I had nice bright spark oh cool slap the second new plug in hook up the wire no pop no fart I even sprayed carb cleaner in the cylinder nothing ! Pulled the second brand new plug hooked a ground wire on it pull the engine over very fast and deader than a door nail . I took tne new coil off took the mower out and parked it by the trash trailer I am done dude . Work on my fair share of briggs and small gas engines this one kicked my right in the nuts no mater what I did and the sad thing its got goo compression I dotted my I s and crossed my T s so many time I ran out of ink in my pen to cross them out

[@Mike-su8si]

I don't have no schooling on what all i know about working on engines take off all your safety button wiring just leaving on the white an black to the carburetor bowl solenoid and thats your problem

[@unklematter]

I have a briggs 7.5 clean flywheel, new coil 3 tried. New plug, still no spark.Anyone have seen this? Suggestions? Thanks

[@HipaParts]

Maybe check the magneto on the flywheel or the wiring connections?

[@stevekurzban9352]

Same here, tried new coil on Toro with Briggs engine. Mower hit something and was thinking bearings so sloppy gap is effected. Never did get it to generate a spark.

[@dco956]

I washed my mower.....now no spark...I wonder if cold water got on coil.and ruined it ? ....I tried another old plug...I guess I'll try another one

[@Mike-su8si]

It more likely soaked your flywheel it happened to me before dry that off next time and then it'll start up and dry your ignition switch and solenoid to and it'll go

[@Mike-su8si]

My coil is damaged it looks bad. I gave that engine away and bought a $40.00 twin cylinder craftsman briggs engine 22 hp and am slowly working on it now its greasy dirty did see someone's been in the ohv covers so may have to go over those later on there's no sense into them using rtv sealer when i know they still sale those ones ohv cover gaskets so why the red sealer now i may have to scrape all that shit off. The 22 hp hasn't ran in a long time from looking at the spark plugs so am gonna take the engine shroud off and the carburetor go ahead and clean that up i had the engine sideways and upside down so its got oil dripping out places it shouldn't be thats normal though from how i was working on it its nothing big engine turns over good with plugs in and out good compression. Now i just wonder what mowers has the old craftsman briggs 22 hp on them

[@spettro9]

Cool, but you didn't really ever actually test the coil itself.. like for example with a multimeter perhaps?

[@Messyandrelaxed]

Yes, how do you test the coil itself? Or is it a matter of ruling everything else out? (I am working on a Troy-bilt push lawn mower.)

[@spettro9]

@@Messyandrelaxed There are other videos that show it, but it's something like testing the resistance between the high tension wire lead (where the spark plug attaches) and ground ie the coil. Look for some other videos

[@falcorthewonderdog2758]

It's actually called a magneto not an ignition coil.

[@michaelsullivan6854]

the new coil comes with 3 connections, 1 has the lug on it that fits the coil, another has a lug that looks like a ground terminal and the 3rd doesn't have anything on it (just in case you weren't confused enough already 🤨)

[@Mike-su8si]

My old Kohler command cv491s single cylinder engine had that one wire from that to the ignition switch spliced into the white one and one to ground the 3rd stays unconnected

[@philliphall5198]

The 4 terminals coil on Honda GX engine are not tested like the common coils How about showing how to test them because people are buying coils and don’t need to

[@EzequielMaldonado-f4d]

U wouldn't happen to have a part number for that coil

[@rickjames6948]

Why does nearly everyone replace the plug first? It's the cheapest repair that will never work for you. How many times have you found a real dead plug? Maybe 1 in 40. Now cleaning said plug, yes I agree. That plug was perfect. Main jet is a little rich. See the base ring and how black it is? She is running good for a mower engine.

[@fjb-Trump-WON]

Cars often got bad spark plugs Bad neans they working but need adjustment due to burn out 😂. But they working much more often and high RPM 😂 But about Small engine -you right

[@lefthandedouthousemachines6228]

You have never dealt with. British motorcycles or any well used engine. A fouled plug is one of the most common problems with misfires in all types of engines

[@rickjames6948]

You need to learn how to use your spark tester guy. Open the test gap up more. You nearly have a dead short. Also that tester will tell you more that just oh yeah I see spark. The more you open the gap the more load is on the coil. You need to load test the coil at 0.25" wide gap. Should throw spark that far. If not your coil is weak. Easy right? No problem.

[@BritishBeachcomber]

That machine has been left out in the weather. Just look at the rust on the flywheel. Making trouble for the future.

[@45valk]

Maybe clean the flywheel, it’s all rusted so how’s it supposed to make a viable spark? 🤦‍♂️

[@rickjames6948]

No feeler gauge required. Use a piece of junk mail. Easy right? U R welcome.

[@rickjames6948]

Need to clean off all the mud and oil from the COOLING FINS. These are AIR COOLED ENGINES. Do I need to elaborate more? This is a YEARLY must do in yours and ever other engine manual out there. Neglect this and you are looking at engine damage. Scrub down that entire mower fella.