How to Easily Fix and Replace a Spark Plug Boot
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- I bought a second hand used coil for my strimmer. The spark plug boot and retaining spring were detached from the cable. I put it back together making a better and more secure connection.
So here's how to fix it or replace it, quickly and easily.
My husband who is not a handyman thought the boot was broken and needed to take snipper to mower shop for repair. Thanks for your video. It solved the problem and hopefully will save us money.
Excellent news Michelle, glad I could help solve the problem
I'll add my praises to the already long list...I couldn't figure out why my Makita DCS6421-20 wouldn't start. I eventually discovered the spark plug wire was really loose so I found your video and went back, fixed it like a boss. It started right up! Thanks for helping me learn another lesson. You're a really good teacher...
Thank you Chuck, really appreciate your comments and so glad that my video could help you.
I thought I was in the market for a new trimmer until I pulled the boot off. Your video helped me do a simple fix. Fired right up. Thanks!
So pleased it could help you. I actually did buy a new trimmer and then found the problem, so now I have two:))
Thank you, I just fixed my trimmer by following your method. Saved me from replacing the whole spark plug cable.
You're welcome Jimmy, so glad that the video helped, thanks for the feedback
Thank you for a very helpful video upload. I have spent a good few hours wresting with this issue. I must say it really is quite shameful of Stihl to adopt such a poorly engineered spark plug connector when there have been many over the years that simply crimp onto the Lead.
Glad you enjoyed the video, Petster, I agree it seems quite a primitive method, I'm sure it can be improved on.
Thank you very much for posting this video. I made a stupid mistake and pulled the boot off the plug wire of a very old lawn mower. I dug around and found this video, and I was able to fix it even with it being a different engine.
Love a story that ends well! Thanks Kevin, glad the video could help
WOW, Stihl should be ashamed for this one. A simple change can go hectic just because of this design. Thank you for the demonstrating this for us
Glad you enjoyed it Aaron, I'm sure they could improve on the design, lucky its a quick fix
Husqvarna 128RJ sting trimmer has same design. Thanks for the info 👍
Nice to know Wes, thanks for watching
Just bought a new auger from Amazon and it was the only one that came with the bit I needed, was good price, shipped here within two days only to arrive not working. I think it is the spark plug was not connected properly and this video shows me exactly what to do! I was about to pay someone to come do what I knew had to be simple but never seeing it before myself could not proceed. Ty :)
I know that you can send stuff back to Amazon if you're not happy, but I've always found that a bit of a nuisance to do. So I'm very glad that the video helped you
great video, your explaination got me out of alot of dispair and what i thought, alot of trouble and managed to fix my Auger👍👍👍
Thank you Paul, so glad my video could help, I had no idea what an Auger was until I googled it and then realised that I had bought a manual one just 2 months ago to put in a few posts around my wifes rose garden
Great video! BTW, those (relatively new) springs are the pits! Difficult to push onto spark plug and difficult to pull off.....
thank you Edward, I agree and I think thats the reason why so many people are having this problem, they're pulling the HT wire and not gripping the boot to disconnect from the spark plug. Some of those springs are excessively tight!
This is really helpful- my spring came out and I couldn't figure how it fit back in. I will give this a try!
Glad you found it useful, Roberta, hope it worked for you, thanks for watching
@@davekennedy52 Yes, I was actually able to get my 27 year old mower up and running again thanks to this video. I'm so glad you took the time to post this!
I say Good Show Ole Chap!!! That was very helpful indeed for anyone in a bind. Such as me.
You're very welcome, glad you enjoyed it
Rare raw footage of Tony Stark builing Mark 1 suit in the cave.
Thank you very much! Me and my father have been getting quite irritated with the new chainsaw. Neither of us has seen this.. "coil spring" design on a spark plug before, so we were quite unhappy and yelling about how cheap everything is nowadays! (:
Glad I could help, don't worry, I do a lot of yelling as well
Thank you for a great and useful video! The process is superb, easy and effective.
Thanks Dave, thanks for your positive comment, glad you enjoyed it
thanks, that was f ing helpful after I accidentally twisted mine off.
and I'm sure that ruined your whole weekend, !! very glad that the video helped, thanks for watching
You just made my life a bit easier, thanks 🙏
you're very welcome, glad you found it useful
Thank you for such an effective method!
You're welcome bejacaa, glad you enjoyed it
Great video. Thank you! I was extremely puzzled when I was installing the hpi ignition on my TRX250R and found this type of connector in the box.
Thank you Mike, glad you enjoyed it. If thats the Honda, its a really nice looking bike
Thank you so Much I was about to replace the whole Ignition Module... Brilliant.
Thank you, its something that most people overlook, so glad the video helped
@@davekennedy52 I still have issues to fix it seems. It only runs on choke and bogs down when I throttle. I hope I can fix it today with a few adjustments rather than anything more advanced!
@@gommechops I have the exact same problem today on my chainsaw, very frustrating!
Like many others, this saved me a real headache. Had bought a “spares and repairs” hedge trimmer which would run but died under revs. Did the full fuel system (as you do), service etc and went to test. Pulled the plug to dab some fuel directly into the cylinder and *ping* there goes the spring from the boot. Hadn’t had to address that before so this video was really useful. Hedge trimmer now working! Hurrah.
Good news! Same thing happened to me. I spent hours working to find the fault and pretty much the last thing I did was check that little spring
This is the type of connection I'm looking to make. I've got a scooter with a screw on cap and each time the rear suspension moves the wire flexes, eventually causing the boot to unscrew and loosen up. I've tried gluing it in with silicone but it's a losing battle. I love the boot itself for protection on the plug, but what good is that if it doesn't hold the wire.
Well I hope this works for you Marty, good luck and thanks for watching
Thanks for the video. Hyundai trimmer would not start, I went to check spark plug and pulled the cap off the wire. Reattached the boot and still no start. Spark tester bulb was lighting correctly but no spark at the spark plug. I heated the spark plug with torch flame and after that I got the engine running.
How the spark plug wire is attached to the coil? Can you remove it or is it glued or something?
Thank you 😊, you helped me out today 🎉🎉
You're very welcome, glad you enjoyed the video
Thanks sir good job I was able to fix mine that way too.
Good to know Steven, glad that my video helped, thanks for watching ((
Great video! Exactly what I needed to know!!
Glad you enjoyed it NM and very pleased that it could help you, thanks for watching
Isn't the hook supposed penetrate the insulation and make contact with the core? It's not stripped like that when new.
You're quite correct, but mine wasn't making contact and kept popping out so I had to make an alternate plan
Fantastic! Thank you!
Glad you enjoyed it, Panzer, thanks for the comment and for watching
Thanks for this!
You're very welcome Michael, glad you enjoyed it
Thank you very much sir
You're very welcome, glad you enjoyed the video
Does anybody know if I can swap the boot from a hedge cutter (jonsered ht21) onto a small chainsaw (sthil ms180) rather than buying a new boot to go on the saw?
Great video Massive help Thanks
Thanks Paul, glad you enjoyed it
Thank you!!
Glad you enjoyed it Sik, and thanks for watching
What kind of spark plug boot if this for, I have a crf450r and I’m having ploblems with the boot
This one is for a weedeater/grass trimmer, I'm sure your one looks a lot different but its purpose remains the same
Ohh okay thank you so much
@@Wet_Soap You're welcome, love your rescued snail by the way😀
Awwww thank you
Any one know if this type of boot will fit on a atv in specific a honda act 110
Thank you. It helps to see something done. I've been dreading my chainsaws spark plug cap. Sub/Likie
Thanks Douglas, I know what you mean, I have a lawnmower spark plug cap thats held together with insulation tape, keep on meaning to buy a new one
Thank you
Thanks for watching Shin, glad you enjoyed it
Don't do this if you have a Stihl FS90/130/131 etc with the boot that covers the sparkplug opening. They're exact length, so if you use any of the length, you need to replace the entire coil/lead component. They're not cheap either!😮
Nice to know Mark, thank you, the McCulloch I've been working on has a sealed boot and very short lead. Had to replace the coil and the new lead is actually too long
When pushing spring into plastic casing, be sure it doesn't go through your finger! 😱
Hopefully that didn't happen to you, thanks for the warning
the wire in the chainsaw is too short for me to be able to slip it all together :(
I can see that could be a problem, my chainsaw lead is also very short. I've heard of a spark plug wire splicer (I think they sell them on ebay) Then if you have some spare cable you could just join them together with the splicer., and make your lead longer
Nice!
Hi Steven, glad you enjoyed the video, thanks for the comment and for watching
We have repeatedly asked TH-cam to take down this video because it hurts our business of selling the whole spark plug cable as well as a clear violation of code 435.6
no words for you barney boy, nice try
Thanks..!!!
Glad you enjoyed it, Victor, thanks for watching
awesome tytyty!!!!!
thank you mrcabojr,appreciate your comment
I don’t think you understand you do not have to wrap the wire around that metal piece the straight piece of wire coming off the tip goes through the wire it holds it on the inside you do not have to strip the wire and then wrap it around it
Thanks Todd, the tip of the wire that supposed to penetrate the HT wire wouldn't remain in the hole to make contact. I tried to make a new hole but the tip kept on slipping out. My wrap around repair did the trick and I have a permanent connection. Hope that clears it up for you
If only my coil wire had enough wire actually in it
Yes, I've noticed that the newer strimmers don't have an inch to spare. Just replaced the coil on my McCulloch and the wire was actually too long!!
Change the title to "The wrong way to install a Sparky"
Ha! Merlin! You do realise that its a 25cc weedeater/ strimmer and not a Yamaha 350 Dragbike? Nice try!
I boutgh similar from aliexpress. What a shit one. It has so thing whole so it was difficult to put in. After I put in. then I decided to check and the spring left on spark plug.
I know how you feel, it happened to me too!!!
@@davekennedy52BTW then I have to redo and 2nd time it worked better and this no longer happens. At least 5-7 times in the row I was able correctly take off and put it back and it is still works.
why are the God dam commercials blocking the last 15-20 seconds.?
Thanks for letting me know Willie, I moved them both to the right so let me know if its better now:)
This design is so stupid why can’t the coil come with boot and better design then pinching the wire then shoving it thru the boot
I agree entirely, not too much thought given to this design and when it fails we have to come up with a solution
This is not a fix, its terrible.
Thank you 🙏 I was 5 minutes away from throwing my strimmer in the river 👍
I know that feeling very well!!!
Lol 😂
Thanks sir good job I was able to fix mine that way too.
you're very welcome, thank you
Thank you so much sir
Hi Mo, glad you enjoyed it and thanks for watching. keep well!
Cool! Thanks
Glad you enjoyed it, thanks for watching
if you strip the insulation material back around 1/2", then make the wire end into a sharp V instead of the L shape, you can wrap the exposed wire around the V tightly, apply a bit of solder to it and then tuck it into the insulated rubber. makes a much tighter connection.
Great tip, thank you, pushing the "L" through the insulation is definitely a mission
True that Rule
@@davekennedy52 still both work ! Thanks for the tips guys !
You are a lifesaver! I just removed the boot from my trimmer to replace the spark plug and noticed a coil wrapped around the tip of the spark plug. "Well, that's new." I'm used to seeing that little flat piece of metal in the boot that holds on to the spark plug by tension. But anyway, thanks for solving that mystery for me.
You're welcome Matt, thanks for watching
Just saved me another call to hyundai customer services , cheers ,I broke my recoil starter then broke this putting on a replacement 😢
You saved my life too! Thanks from Australia!!
Thank you for this excellent tutorial. I have just bought a replacement boot that's just like this and I was wondering how to fit it...now I know!
you're very welcome! Glad you found it useful
You just saved my ass . Thank you this was exactly how mine was i did exactly what you did. Thank you🙏🏻
Its a pleasure Thomas, glad I could help
👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻 I'll give it a go on my chainsaw's spark plug lead. 😊
Plug leads on chainsaws are usually very short. Good luck, thanks for watching
Thank you for posting this. I just had my five year old lawn mower quit on me. Then not start any more. I took it apart slowly. Went to clean out the plug for any built up dirt/oil. The pieces of metal in the boot fell out. Broken in two pieces. I guess it just got old? Happy to find out it's most likely just the boot itself is the problem. Explaining why it totally stopped starting.
Glad you found the problem Hugo, although 5 years is really not that old; these days nothing seems to last
Thank you. I was wondering why I was getting shocked through the sparkplug boot while operating my string trimmer. I did a similar repair and added a layer of electric tape around the prong. Better than new.
Surprisingly enough, that little spark carries quite a punch!! Glad you enjoyed the video.
yeah . i ended welding them up.....
Solder? Probably more permanent as well.
I ripped the boot completely off the wire and it’s like I cut the wire in half. Is it still good or do I need to replace it?😅
You got to expose the inner wire, so cut back the plastic covering, then reattach the exposed wire to the coil spring in the boot. Then put in a spark plug and turn your engine and if you see a spark then your connection and wire are still good. Hope that helps
davekennedy52 thanks 😊
Mine is the same did it yesterday never Said there was a spring in my stihl Fs- 56 can’t do what u posted up not enough wire
you are a genius
very kind of you, thanks for watching
Thank you for posting that video. I just used it. Fixing my 550 XP not gonna lie. It’s kind of a pain in the ass for how simple it was if that makes sense lol.
That makes complete sense,glad the video could help and thanks for watching
Excellent information..... unfortunately for me the spark plug lead is just long enough to go on the plug ..... no extra to actually push through the cap and attach .....
But good video regardless....🎉
Thanks Deosie, I've also noticed that on the newer grass trimmers leads, there's not a centimetre to spare. Chainsaws are the same. Hope you find a solution
Bardzo fajnie pokazałeś. Super! Bardzo mnie się przydał twój filmik. W mojej kosiarce właśnie taką była awaria. Pozdrawiam.
Dziękuję, bardzo się cieszę, że mój film mógł Ci pomóc i rozwiązać Twój problem. Dzięki za oglądanie
I have this style plug wire on my old outboard, is this how your supposed to setup the wire/boot?? I never wrapped it around the spring…..only poked the point into the wire. HAVE I BEEN DOING IT WRONG??
You've been doing it right!! The point kept on slipping out of the wire on my machine. I continuously had "no spark" issues. Now I don't have to worry anymore. Thanks for your comment
Standing in the garage ready to wake the neighborhood with my screaming chainsaw. I remove spark plug boot a lil to far , 💡youtube = Trees Down & Neighborhood up, saw on shelf , day drinking by a lunchtime fire.
Thanks for video, 🍻
Ha! LM can't think of a better way to spend the day and glad you enjoyed the video:)
The lube was what helped me. Thank you 🙏
Yes, absolutely, it makes all the difference
Life saving medal goes to .....
Thanks!
You're very welcome! I'll wear that medal with pride, glad you enjoyed the video😀
I could only pull the wire through the 90° L bend with forceps. Spraying only made it more difficult for needl-nose pliers to grip. Maybe my boot was more rigid than yours. Like your idea of wrapping some bared wire around the coil; too late for me though. I'm only here to find out how I should have done it!
Thank you John! Yes, my boot is very flexible even though its about 40 years old. I think the new boots have a plastic/rubber type of material and are definitely more rigid. Glad you managed to fix yours
@@davekennedy52 Yeah, but (as I responded elsewhere since then) ....Turns out there is something wrong inside the 6" ( ?) of ht wire. It's moulded into the coil, which are cheap enough but a) the principle of the thing, b) month by slowboat from China. Looking at doing a splice but didn't realise how THIN the one strand of wire is inside, and DELICATE! I can't find anything on what the anatomy of an HT lead is. The pointy end(s) of the spring coil that fix into the rubbery insulation have no chance of actually hitting the central wire. And by poking probes along the lead to find a place where there is continuity with the body so I can make a splice I think I've destroyed the actual wire! Hey ho!
@@johncollins8304 I'm very surprised to hear that the wire is so thin and fragile. Mine were quite thick. I'm sure you could use the spark plug cables from a car if you are able to splice them. I had the same problem with that pointy end of the spring. I wasn't sure if it was touching the inner wire and it just wouldn't stay in place-kept popping out again.Really irritating to wait that long for parts
very nice video... Thank You so much for making this...
you're welcome John, glad you enjoyed it
Thanks a lot.
you're very welcome, hope it helped and thanks for watching
Great video. Thanks for the help
Thank you and you're welcome Gareth, glad you enjoyed it
Just what I needed you are the greatest.
Thanks TJ, very pleased that it helped you
Found this video after cleaning carb failed. The back side of boot was severed. Followed this method and it started right up!
Baie Dankie. Dit sal my geld spaar.
Groot plesier Willem, thanks for watching
Thanks for the tutorial.
you're welcome Teng hope you found it useful, thanks for watching
Like many others, let me say thank you!
you're very welcome j3, glad you enjoyed it
Perfect
Thanks Roger, glad you enjoyed it
I uhhhh broke 3 spark plugs because I didn’t put the spring in righteousness or
don't worry Logan, happens to the best of us!!
Ah ha😀
its always the little things, right?
Thank you!!!!
You're welcome Krista, glad you enjoyed it
❤❤❤
terima kasih, merci beaucoup
BRAVO!!!
Many thanks ernest, glad you enjoyed it and thanks for watching
Can we use motorcycle or scooter spark plug cap instead of this spark plug cap?
No problem Atul, the spark plug cap is there just for insulation
@@davekennedy52 but motorcycle cap size doesn't match with spark plug of machine
@@atulshinde5212 if motorcycle cap is too big you can use insulation tape to keep it in place
@@davekennedy52 it's smalk
Thanks for this. I went to pull the spark plug from my son's dirtbike and when I pulled the cable off the spring was stuck on the plug. I thought there would have been a metal clip that locks over the spark plug and this was just some home repair job done after the original broke. I follow your vid to reconnect the wire and spring. Thought I was up for a new cable or end connection.
So glad that my video could help I agree, they should make them more robust because people remove the boot and spark plug many, many times for cleaning and for any ignition problems
Thank you sir for keeping it straight to the point 👉 simple and fast these dam new kids don't know shit these days I must have watch 10 videos and all there doing is explaining a bunch of bull shit then try to sell you there replacement man I tell you I don't know what this world's gonna do when us old school guys are all gone.
Couldn't have said it better myself, Recently had a 2 year old CD player that stopped working. I was told to throw it away and buy another one. Glad you enjoyed the video and thanks for watching
I have Ryobi Trrimmer If they don’t wanna start I tried everything I checked the spark plug and that was in it so I seen your video I checked my wire it was disconnected so I did the same thing you did I put it together and after a year and a half the machine started working thank you
Really happy that it worked for you and well done for not giving up on your trimmer.
Why can't it have a regular coil 90° bend instead of that coil thing thats problematic
Hi Steve, that is a regular 90 degree boot for a coil. Some of the newer ones are sealed units. That coiled spring is what grips the top of the spark plug and is supposed to hook into the HT cable. Not a clever system at all. Thanks for your comment and for watching
@@davekennedy52 I mean a 90° end like on a car plug wire
, thanks, I see what you mean, it would certainly make life a lot easier. With the present system, people tend to pull on the HT cable to remove the boot from the spark plug and I think thats what causes damage
@@davekennedy52either way I'm glad you didn't try to push that clip threw the small end of the boot like a lot of videos on TH-cam 😅
Absolutely!! Keep well Steve
Well, after scouring TH-cam for a couple hours, this is the one that finally got me up and running again! Thanks for the video!
you're very welcome dakota, so glad the video helped
Saved the day. Auto parts stores don't know how there parts work. Appearantly twist off witch it says on the boot is not right either.
Glad it helped Jeff, no, definitely not a twist off
Curiously, could I just solder it on to prevent future headaches of the boot dislodging?
I'm sure you could! thanks for the suggestion, my solders are never strong enough
That’s what I did. Fixed it!
@@JayTdub13 Fantastic! Well done
To solder or not to solder?
Ask yourself,
Are you A;
Do you want the job done correctly, eliminateing any possibility of future issues?
Or are you A ; Wannabe fixit man and take the chance that NOT soldering the most important connection in a internal combustion engine is a intelligent choice, that will not cause future engine troubles.
Thank you, I hadn't noticed the hole in the insulation, need better lights in the shed (and younger eyes) !
Glad you enjoyed the video Christopher, yes I have the same problem!!
Thank you so much. So glad ran into your video. You make it so simple thank you so much again.
sorry for the late reply Thao, glad you enjoyed the video
Your accent makes the video sound more official. Thank you.
Hey Mark sorry for late reply, glad you enjoyed the video. Yes, South African accent, very noticeable😁
You are a genius Sir. Thanks so much for sharing this! Cheers from Texas 😊🙌
You're very welcome!! so glad you enjoyed it
Fantastic idea! Just what I needed to know... Thanks friend!😃
Glad you enjoyed it Dennis, thanks for watching