How to Remove Seized or Stuck Spark Plugs

How to remove seized or hard to remove spark plugs. Depending on your driving style or how your vehicle runs, this can affect how much carbon build up is in the combustion chamber. The carbon can build up and around the threads of the spark plugs, making them extremely hard to remove. Even without carbon build up, if the spark plugs have not been changed for an extremely long period of time, some auto manufacturers now have higher recommended maintenance intervals, corrosion can build up between the threads and the become seized. If the plugs are forced during removal, this can either lead to breaking off the spark plug or worse, damaging the threads in the head. #sparkplugs #engine #autorepair
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Tools/Supplies Needed:
-penetrating oil
-deep sockets
-ratchet
-extensions
Procedure:
-most spark plugs tend to be quite hard to access so you can’t usually get any form of heat around the around
-sometimes you can use a light weight penetrating oil to allow it to soak over night, this will depend on the design again
-what I find works best is patience and working the plug back and forth
-as you can hear these plugs are squeaking during the removal process which isn’t a good sign as the threads are binding
-once I have broken the plug free, loosen it slightly until too much pressure builds up and then turn the spark plug in the opposite direction, tightening
-loosen the plug a little further than previously, then tight the spark plug again
-this method will help break down any corrosion or carbon build up, eventually allowing the spark plug to turn easier
-eventually it will become easier to loosen until the spark plug has been fully removed
-sometimes if you do need the assistance of heat, only remove any required engine covers and then start the engine with the spark plugs still connection
-this allows the materials to expand and this can help in the removal process
-just be careful not to burn your after when working on a hot engine
-other times if excessive carbon build up is known, use a fuel additive which can help remove that
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© 4DIYers 2013
All Rights Reserved
No part of this video or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of the author.

[@charlesterwilliams1736]

You know I was very dismissive of this tutorial saying to myself that this gentleman is going to cause me to break off plugs in my engine causing me great expenditure. I began trying to remove the plugs and when I MOVED A HAIR AND GOT A BINDING, I INSTINCTIVELY said let me follow this guys instruction and tighten by going back the other way. I kept doing this about ten times and sure enough all of a sudden the stuck plug became free. So for all of the other plugs I am going to follow this gentleman's instruction because it works. Like he said, it takes patience but it pays off. Don't force, just keep going back and forth, loosening and tightening. This mechanic knows what he is talking about and doing. Thanks so much sir for your knowledge From a Doubter

[@4DIYers]

Thank you so much for the feedback and kind words :)

[@wesfields9322]

This dude removed one spark plug and then immediately typed and entered a comment..thats respect.

[@JohnSmith-xx1lx]

@@wesfields9322lmao 😆

[@stevanrose7439]

I did this to my Tacoma and it has worked so far. I think it will get the rest of them out. I also have put anti seaze on the threads for future removal.

[@Zinger10]

I don't know anything about cars, but I wanted to learn a little. A few month after my Mom was charged over 1K to change 2 ignition coils, 6 spark plugs and a gasket, she got a misfire code on her #4 coil. I was not about to let her take it back to that shop that charged her almost her entire month's living budget. So, I decided this was a good starting point for me to learn a little about cars. She has a 2002 Ford Escape. I decided to change the spark plug and ignition coil in the #4 cylinder... I wasn't sure if the spark plug that the shop changed was causing the issue or if it was the coil. Anyway, I couldn't budge the spark plug at all! I tried this method, but it wouldn't budge. Granted, I'm a woman and I don't have that much upper body strength like you guys, but it didn't move at all... either direction. So, I did research and bought some PB Blaster. I let it sit over night and I tried again. Nothing. Not any movement at all. I sprayed more PB Blaster, waited another day, warmed the engine and again no movement. I almost gave up until I read someone's post laughing at a guy who used a vacuum cleaner tube to put over the socket wrench for leverage. I was desperate. I didn't have a vacuum tube, but I did have a curtain rod. I took it apart and slipped the socket wrench handle into the rod. I barely put any pressure on it and bam! It turned like butter! I was so happy. My neighbor friend told me that I could have broken the plug with this method due to torque or something like that, but whatever, it worked! I'm sure the PB Blaster stuff may have helped, but the trick to my success was leverage... I just wasn't getting any leverage on the wrench and my lack of strength didn't help. I thought I'd post this here in case I can help anyone. I'm sure some here will laugh at me and call me dumb for doing that, but if it helps someone then it’s worth it... I spent hours researching it and just couldn't understand why I couldn't budge the plug at all.

[@ethan-py9he]

update?

[@Super-Bike-Joe]

PB is the way to GO!!!! I’m a motorcycle mechanic. Use it on a lot of parts. Patience is the key!!! BRAVO ON YOUR SUCCESS.

[@tiffanyslade7625]

Thanks for sharing!!😃☀️

[@Karleemezquita]

Hi! Female here who has always just let her dad or a mechanic take care of the issue, but like you, I decided to take matters in my own hands and am having the issue where the spark plug isn’t budging. I’ve stumbled upon your story and I’m very thankful for you putting in the time to share your advice and glad to hear your success. I’ll try that PB and grab some leverage. I hope to have success like you!!

[@evanferree]

Literally saved my life and my little pool cleaning business. I NEED my truck to work and don’t have money for a mechanic. I was ready to just call it quits cuz I ain’t know what I was gonna do. Didn’t think about reversing it, but sure enough I did and then went back and forth until the thing came free. No ruined threads on the engine!! 🙌

[@5150hs]

4 years later and your video is still helping others like myself! 2011 Ford Escape 2.5 and these plugs were seized at 115,000 miles (new, used car to me). I was able to replace & install new plugs (along with new coils). Car runs even better now. Thanks again mate 👍

[@4DIYers]

No problem, happy I could help!

[@limasierraone7107]

Holy crap I'm having the exact same problem with my 2011 Ford Escape 2.5!

[@gujwonde]

Same with just #3 on my Ford Escape

[@DiamondScuff]

thank you sooooo soo much! thought it was cross threaded so i gave up cause im not that experienced didnt wanna destroy the head. after doing your method and getting one up looking at the threads there was no thread cross just lots of carbon!!! all changed and vehicle is performing better then ever!!! HAD to find this video just to leave u this comment and like! thanks!!!!!!!

[@4DIYers]

Awesome to hear my method helped and thank you for the kind words :)

[@russellstringfellow6872]

I have a2011 Buick Lucerne. 160,000 m. ( engine running at reduced power ) Light stays on Just changing p. wires ( original by the way ) Brought it to mechanic to get the plugs changed. ,he called me , said plugs were stuck tighter N dicks hat-band , and he didn't want to be held accountable in case shit went south . Yall sound pretty confident with your method ? ? ? WELL , HERE WE GO RIFF

[@John-rk3nq]

Spray water in intake till it just about dies

[@ArizonaRanger.]

​@@russellstringfellow6872How did it go?

[@scampalong]

HA.. IT WORKED....THANKS !! there was another idea to put a piece of duct tape on in the end of the "remover" when THAT was left below.. I'm so grateful for people who take the time to contribute their time and expertise !!

[@tokenwhite99]

Changing plugs on a 1991 Ford F-150, 4.9 6cyl, 51000 miles. Not sure how long its been since the plugs were changed last. I pulled one of the wires and it came apart. So I ordered a set of those also. Just sprayed the plugs real good with PB Blaster to let soak over night. I’m really glad, I came across this video. First time doing this. The truck is new to me. I’ll let you know how it turns out. Going to follow the instructions. Reading ALL the comments helped a lot also, to prepare.

[@Angel-xe2de]

Even if your plugs snapped in half I’m sure that Straight 6 would still run just fine. Those motors are legendary

[@keiscott2953]

That's interesting of the same truck same 4.9 liter, same issue but the last darn plug the more I unscrew it working back and forth it probably isn't even 1/4 the way threaded in now but gets very difficult, even going clockwise counterclockwise how many times and penetrating oil I hope this thing comes out without any wrecked threads... I miles shows about 150,000 and I could swear wires cap plugs everything looks original can't believe it 🙄

[@paulvannoy8872]

THANK YOU! this seems like common sense but I was really fearing the worst when one of my plugs would just barely turn. The one stuck plug took me 20 mins but it finally came. Surprisingly the replacement plug threaded in just fine.

[@4DIYers]

Happy I was able to help!

[@tejaspadhye]

This video helped me! Plugs 3 and 4 on my yaris were getting more tightened when trying to loosen them. Stopped right there and found your video. Trick coupled with wd40 made it possible to get them out. AND you were right! The crush washer were squeezed flat, overtightened by a mechanic before. Thanks a ton!

[@4DIYers]

No problem, happy I was able to help and thank you for the feedback!

[@andrewbledsoe131]

I honestly can't thank you enough. You saved me a TON of money. My socket came off and got stuck on my first spark plug and wouldn't come lose but when doing this trick I got it in minutes. It was the only spark plug that was stuck. You're the bomb!

[@vegasking7022]

😂😂😂😂

[@oliverrojas7117]

Direct, simple approach to releasing seized spark plugs and a reminder to garner patience

[@4DIYers]

Thank you, I really appreciate the feedback :)

[@gerardpesca4632]

1999 Subaru had one extremely stubborn plug and so I applied some WD-40 and your technique and it came out like butter. Thanks so much. Keep up the practical tips

[@4DIYers]

Awesome to hear and thank you for the feedback!

[@bigglokk1975]

Can you put WD-40 on a spark plug that’s still inside the engine to loosen the spark plug??

[@Karleemezquita]

@@bigglokk1975did you ever get an answer?

[@georgelinardic1061]

I wish I could buy you a beer.... Worked it back and forth like you suggested and the plug came free in minutes! THANK YOU!

[@4DIYers]

Haha, no worries. Awesome to hear and thank you so much for the feedback!

[@Mike_44]

This is a great technique, didn’t think of it before. I got one spark plug stuck on my mom’s ‘07 Toyota Corolla and already broke some pieces 😬 of the porcelain. We left it soaking overnight with some W-40. I was thinking of dumping some dry ice to contract it just a bit. I’ll try this technique next. Ty Update: I was able to losen the seized spark plug using exactly your method after letting it soaking with penetrant oil overnight. The plug’s porcelain material partly broke so have to be real careful not to drop any pieces of it down the cylinder by using a vacuum cleaner sucking the broken parts out. I was thinking of bringing the piston to TDC before total removing the plug, that way if anything falls it’s right there. Really appreciate this video!

[@4DIYers]

Awesome to hear it work and happy I could help! Thank you for the feedback and kind words!

[@apollosix]

After 230000 klms 4 out of 6 spark plugs were tight and squealing, This described process in this video worked flawlessly and all 6 plugs were out without any damage to the threads in the cylinder head. Many thanks for this video.

[@4DIYers]

Happy to hear and you are very welcome!

[@Agsrdemon]

Had my 09 Honda Civic GX (CNG) sitting for in my driveway for around 2.5 years. 3/4 spark plugs were seized. Thanks to your video I got confidence (diy) to add a bit more force to pull them out. I had to do a combination of loosen/tighten, heat up engine, and a bit of penetrating oil. It took about 20 minutes but worked. Thanks for the video!!!

[@4DIYers]

Happy I was able to help and thank you so much for the feedback!

[@thomasbartlett3409]

The video presented here is the way I've been doing it for years. This method also applies to many other applications. When the spark plug or bolt begins to move slightly , a shot of PB blaster or another good penetration oil will make it easer to complete the job. Great video and thank you for posting.

[@4DIYers]

Thank you so much for the kind words and feedback!

[@taylorguitar814ce]

Learned this one from my Dad when I was a kid. Good tip. But… I wish the spark plugs on any of my vehicles were on top and so easy to access! It should be a law for all engines to be made that way! Lol.

[@4DIYers]

Thank you! Yeah automotive companies just keep making things more complicated and it's getting to be too hard for at home diyers.

[@joecoleman288]

I’ve found it’s best (if they haven’t been changed in a while) to remove the stubborn spark plugs while the car is hot. Softens the metal just enough to pry it loose.

[@jaycarden5466]

This method worked for me! I went to change my plugs on my NA Miata and the first plug was stuck like glue…I gave up hope on trying to get it out knowing it would probably snap off but thankfully I came across this video and it saved the day. I used a little wd40 and inched it back n forth and voila! It came out no issues 👍

[@4DIYers]

Awesome to hear, happy it worked out for you!

[@Braunschweiger1984]

This video saved my car. Thank you. I was so frustrated and you saved me. To others, as he said be patient; the tightening/loosening method works!

[@4DIYers]

Awesome to hear and thank you for the feedback!

[@mtdelvecchio1]

Thanks so much for the video. Had a stuck plug and was very concerned that it could be a big problem. But I just applied you method with a lot of patience and job is all done.

[@4DIYers]

Happy to hear it worked and thank you for the feedback!

[@trcythmpsn]

Just wanted to say thank you for this video. I had a stuck plug on the back of a 5.7 hemi and this trick did the job. I thought I was screwed and the plug was going to snap.

[@4DIYers]

Happy I could help. Yeah it's a nightmare when they're seized and there isn't much room. I did them on my 5.7 Hemi Ram as well, almost every single one fought me.

[@Thebowzer221]

Shoot some WD in there the night b 4. Next day do just what you did. Worked 4 me on ah Jeep. These plugs wouldn't come out, and I didn't want 2 bust or strip them. It worked!

[@4DIYers]

Excellent tip, thank you for sharing! Broken plugs are not fun. Haven't experienced it myself, but have witnessed it happen.

[@lisatrump6600]

Mine won't come out of my 2000 Pontiac sunfire!

[@lisatrump6600]

Excellent

[@Funrunner008]

Will supertech lube spray or throttle body cleaner work?

[@jwill9877]

@@Funrunner008 use acetone or nail polish remover and transmission fluid. Mix it 50/50 or thinner if needed. It will soak down the threads and dissolve rust and carbon. I use synthetic atf and acetone and it's the best penetrating oil available. Just give it time to work

[@marcosmartinez2308]

I know you posted this before years ago but dude you just saved me a headache and lots of money your awesome

[@oz185]

Today October 20, 2023 This tutorial save me from big expenses. Also added a prayer 🙏 Thank you sir! Your a fallen angel

[@4DIYers]

Glad it helped and thank you so much for the kind words!

[@telosfd]

Totally true, patience! So i try this procedure when engine is cold or warm or doesn't matter! Like your video!

[@4DIYers]

Thank you :)

[@shawboehler2735]

Love unknowingly opening this video to the exact same engine im working on

[@StrangerNomad]

The laws of the universe govern what strange circumstances we experience 👌

[@pagemartin3384]

Lucky xc mines a damn v6 and the spark plug is in a horrible place

[@turkamayne7]

My dad was helping me and I was very close to not having a car so I found this video and he was already just working at it but the last one just wasn’t coming. So he kept going, little by little it became loose and when it came out he pointed at my phone “like he said, patience”. I really appreciate this video. It is a very informative, yet simple, explanation. Thank you.

[@marilynwheeler8887]

used wd40 after 15 minutes nothing , left overnight nothing, added carberator cleaner and mixed it up with screw driver - popped out like nothing was ever wrong also prayed to GOD

[@4DIYers]

Awesome to hear you got them out!

[@m-zap1332]

I changed two out of four spark plugs with ease, but the remaining two are stuck and harder to reach. I will try this method!

[@davidarndt1371]

this video just saved me big time I already broke my plug (last one to replace) and couldn't get it to do anything and then I used your method and was able to get it out. thank you

[@freedompioneer4311]

What happens when you break it, mines stuck from rust I think what was yours even stuck from

[@mathewdavis-adventuresandd6643]

Perfect. Thank you. My spark plugs were seized up on my 07 GT and I just knew I was going to jack something up. A little penetrating oil with working it back and forth and they came out just fine.

[@nkhondochagwamnjira1344]

Please share the penetrating oil you used. I have a stuck plug on my W203 that needs removal

[@mathewdavis-adventuresandd6643]

@@nkhondochagwamnjira1344 Any brand that says penetrating oil will work. They key is... time is your friend. If it won't move, just give it time. Good luck on it.

[@musiqndasoulv3228]

Thank you so much!!! Been lacking for the last week stressing, but came across this video and knock that sucker loose! You’re a GODSEND! 🙂

[@Chris-tj3bm]

Thank you so much !!! I was struggling at one point, you saved me!!!

[@hondacyphers]

Thanks 🙏🏽, tightened and loosened my spark plug on my D16Z6 and it came off in one piece

[@4DIYers]

Nice work and happy I was able to help!

[@user-pq1cj3hy3q]

I tried getting them out on my ford. took it to a mechanic for something else and asked him to check it out; he said they are pretty seized up and was afraid if he did any more twisting it would break and cause a major engine job. luckily i don't have any misfires for now but im gonna try another mechanic cuz i sure as hell ain't trying to break my spark plugs.

[@4DIYers]

Ford 4.6L V8?

[@blackmantalkin271]

Dude I’m in the same Situation if you could help me please

[@ohiovalleystrongman]

Thank You! Thank You! Thank You! This works perfectly and made it come out exactly as in the video!!!

[@4DIYers]

You're welcome!

[@Jackthesmilingblack]

However, if a plug snaps, you are most decidedly screwed.

[@denang501]

They snap way easier than people expect. Spent the better part of an hour using an old masonry bit and a breaker bar to remove the threaded half.

[@JasonChonev]

Denang I snapped the spark plug on my moto and it is in half and it is stuck in the bay do you know how to remove the broke end stuck on the spark plug holder

[@Jackthesmilingblack]

@@JasonChonev There is a special tool for this, but it may involve leaving broken pieces of the spark plug in the cylinder.

[@draffter4055]

Thank you for the directions. I placed a piece of 1" schedule 40 PVC pipe on ratchet handle for more leverage.

[@4DIYers]

No problem!

[@willie123811]

@@4DIYers Thanks for this video it actually helped me remove a stuck spark plug in my MK6 Volkswagen Jetta

[@BWater-yq3jx]

I'd be afraid of too much leverage; rather strain myself than break off a plug!

[@joshiedL]

Had to be patient for about 25 minutes... but we got there in the end...

[@rodrigocasimbon5242]

Thanks! That solved my problem, I hope!

[@4DIYers]

No problem!

[@kingjoker1313]

You're my hero bro!!!...thanks for the tip

[@4DIYers]

No problem, happy to help :)

[@deandye3255]

changed plugs on my daughters 2006 BM 325I one plug was stuck i tried the back and forth and tried PD Blaster letting it soak started the car up to heat the plug it as a pain all the way after a hour or so it final came out and the spark plug had aluminum on its threads boy i was sick i just knew i wasn't going to get a new plug to start But i got lucky it did and it seam to tighten i used Anti-seize on the new ones not sure if thats a good ideal on aluminum heads but damn sure dont wan't to do that again

[@FIXMYCAR]

Also is very important that you inspect the spark plug thread for damage, or if you see cylinder head spark plug thread stuck to the spark plug thread, then you will need to use a thread chaser to clean the thread or repair with a spark plug thread insert

[@makosharkcnc7730]

hope that never happens to me don't sound like fun!

[@freedompioneer4311]

@@makosharkcnc7730 Previous owner used epoxy to install a spark plug after he stripped the hole in a 2100 accord EXL V6... I'm not sure what to use to possibly possibly dissolve the apoxy and then I can't seem to get my socket around the top of the spark plug

[@colleenpittman9230]

What do I do when I can't get the new plug to screw back in the hole?

[@otofoto]

Put engine oil on plug thread. Also it may mean threads in head are slightly damaged and need to be cleaned with thread cleaner(not rethread as it removes material) or just use old plug break of the tip and saw its thread vertically in middle like some couple of first winds so it will create similar tool to thread cleaner. The split will allow any debris to come out and also allow it to push closer and go into thread gradually making its way.

[@earnestbrown2643]

Well I have never seen a seized one turn that much, they just snapped. But I will let it soak over night and use a 1/2 in Drive!

[@Benvader96]

I was thinking about warming the engine cheers mate 👍

[@veggiepowered]

I'am Your Newest Subscriber Great Videos

[@4DIYers]

Thank you so much for the kind words and support!

[@blumac9801]

Helped me get all 10 out. Thanks

[@4DIYers]

Glad it helped!

[@BruceLyeg]

Good video! Broken spark plugs or stripped threads are no fun.

[@4DIYers]

Thank you :) I have yet to break one, I was sweating with this job though lol.

[@nelissunad6953]

This is a much appreciated video, thank you!

[@4DIYers]

You're welcome!

[@Tyler_Schreiber]

Does soaking the spark plugs in oil help remove plugs that are a little bit melted? A mechanic said he didn’t want to break my plug in half and suggested I need a new engine

[@4DIYers]

No it won’t help melted plugs. What happened? If they’re melted, your engine is most likely no good and will need to be replaced. Does it still run?

[@uRealReels]

What fuel additives should be added to help removal

[@jpsilvers7879]

I can’t get my plugs to budge either way and don’t want to really yank on it so am I screwed or what

[@Pray4Mojo1]

Keep using a good penetrating oil on them, like pb blaster or seafoam deep creep. At night when the engine is cooled down soak them. Try removing them in the morning before you drive. Just keep doing that every day.

[@RSole9999]

Aluminum (head) has a coefficient of expansion greater than that of steel (spark plugs) So crack them loose while the engine is hot, then when the engine has cooled remove them and replace and torque them.

[@4DIYers]

Doing this will the engine is hot is the best option, ran into some like this. After it cools, it can become stubborn again.

[@RSole9999]

@@4DIYers Yes, but the tightening torque should be done on a cold engine. I installed new plugs while the engine was warm, then torqued once completely cooled. Also, never put lube on plug threads.

[@4DIYers]

Yes I am aware of all of that. However this video is only specific for removing seized plugs.

[@isaiah1736]

Trying to replace plugs and it seem to be getting tighter ! I’m Turning counter clock wise but still ! Will try this back and fourth thing tomorrow hopefully it works !

[@4DIYers]

Definitely don't keep forcing them, they'll eventually break or damage the threads. Best of luck!

[@gregwallwork5288]

Did it work?

[@charlescoker7752]

Have a Lt 1000 Craftsman mower. The plug will not budge. My socket has rounded off the spark plug. Now what. It is hard to get to.

[@YouTooCanDo]

Can i use wd40? How ? I used the back and forth motion but it won't come lose. Any tip can help!!. Please

[@MrSixstring2k]

Thank you for video, I found it really helpful

[@4DIYers]

No problem, happy to help!

[@UberGeekFarmer]

Good tip unfortunately VW/Chrysler 2011 Routan with 3.6L VVT V6 cylinder #2 rear head is fuzed into the head, removed the spark plug tube and see dark brown burned deposits, tried the PB/WD/Actone/Laquer thinner/ over night no luck, factory had rounded off the hex of the spark plug so 5/8" thin wall deep socket just spins on it. think only thing to do is remove the head, put it on drill press, drill out the center of the spark plug then use LH screw remover to get plug out of the head, then use tap to clean up sparkplug hole and or tig weld to repair if needed. Even with tube out no way to get leverage 2" in the head. But thanks for the tips.

[@edwardsanchez7045]

Worked like a champ!! Thanks a ton!!

[@TheDemon3812]

Using wd 40 or lubricant helped a ton

[@4DIYers]

Happy I was able to help!

[@rachaellj7]

I literally did everything. I’ve had these same spark plugs for two years. I sprayed the pb blaster on the spark plugs left overnight and tired in hot and cold engine it’s still not working please help!!!! 09 ford focus 4 cylinder engine. I successfully removed one and replaced it without the pb blaster. But the last three are so hard it won’t budge even with the hammer.

[@4DIYers]

Try Kroil, it's one of the best penetrating oils on the market.

[@ravi1348]

Hi I have a 2008 Honda Civic GX natural gas car which the spark plugs are jammed in and the dealer doesn't want to touch it because they could break what do you recommend I should do I'm located in Orange County California and if you have any recommending repair shop which can help me Thanks Ravi

[@MrT-dy4fe]

God bless this man.

[@MrCaterhamr500]

The best way to do it is get the engine hot and remove plug wires/coils and spay WD40 down towards the plug while engine is hot. With the engine being hot it will thin the penetrating oil, ensuring it affects as much of the spark plug thread as possible, then leave for 20 minutes. The engine should still be a little warm, and plugs should come out fine unless there is a serious corrosion issue.

[@eazye26boy]

yeah did that this morning and it helped alot but didnt have any luck removing one out of four even after driving and warming up the engine and adding plenty of WD40 afterwards. Guess ill try agian later

[@muhitsaharaiar5202]

@@eazye26boy did you manage to get em out? Having same issue right now

[@eazye26boy]

@@muhitsaharaiar5202 yeah what i did was just drive the car for like half an hour on the highway then when i got back home i took the coil off and sprayed a little wd40 into the hole then took my time loosening the spark plug little by little by using the same method in this video

[@marlonoriley8821]

Been 5 yrs this video was made. I’m gonna let this 90k mile, 11 yr old Hyundai cool down and try this out. Car gave me a code for the map sensor failure but I know a misfire when I feel one. New oem sensor didn’t help so I’m Changing them. Manufacture say to replace at 105k.. I’m ranting atp. I’ll send an update once it’s done,

[@OathKeeper1506]

A lot of the seizing has to do with steel spark plugs in aluminum threads.

[@Stahodad]

I love how no one uses penetrating oil..

[@colleenpittman9230]

On 98 Chevy S10, had miserable time getting 1 plug out, when I did, it was so fried & partially discinegrated. Now I can't get the new plug to screw in. What do I do? HELP

[@4DIYers]

Inspect the threads and make sure they're not damaged.

[@ruthlezkilla8755]

Thank you! It worked!!!😊

[@roberthulse8879]

what if it doesn't move at all in either directio

[@4DIYers]

Try an impact at lower power.

[@rafaelmanueljr]

hi, i have another problem about spark plugs, one of them came out together bolted on another thread and we cant take it out so i have to return it back without changing it. so all 7 were changed except for this one. how to solve this?

[@4DIYers]

Sounds like someone had installed a heli-coil. You'll need to replace the heli-coil and unfortunately I do not have a video for that.

[@ScottSellsSoCal]

Should you place a squirt or two of oil to help with the removal and to protect threads?

[@4DIYers]

I would recommend it. Some people also apply an anti seize, but most spark plug manufacturers also don't recommend it and some also have an anti seize coating/plating to prevent this from happening. Personally I'd avoid the excessive maintenance interval recommendation from some manufacturers. If you're doing the work yourself, replace them sooner rather than later. They're not overly expensive and when it's kept tip top, you'll most likely get that money back in fuel savings anyway.

[@ty-launax3676]

how to get the carbon buildup out the spark plug well? without wd-40

[@4DIYers]

You could run a fuel additive which is specific for carbon build up or mist water into the intake while the engine is running. A little spirited driving can help clear out carbon too, in a controlled environment of course. Worst case scenario is removing the head.

[@yvetteglasier7700]

One of the screws did break. How do I get that sparkplug out now?

[@4DIYers]

An easy out would be the next step.

[@thomasfortner3030]

Thanks you helped a lot

[@4DIYers]

No problem!

[@dylanharding9126]

so i got the spark plug loose as they will go but it still wont come out, if i keep trying to losen it, it will just squeak

[@4DIYers]

Almost sounds like it's stripped. Does it tighten back up?

[@freedompioneer4311]

PLEASE HELP IM IM A JAM!! Anyone? Can't really afford to have the whole top half of the engine machine at a machine shop but ... Previous owner used epoxy to install a spark plug after he stripped the hole in a 08 accord EXL V6 3.5 sedan... I'm not sure what to use to possibly possibly dissolve the apoxy and then I can't seem to get my socket around the top of the spark plug. BESIDES THAT A Coolant line busted to the transmission also but I came up with the idea to put an external transmission fluid cooler on it and just refill with fluids and it runs fine... so now I'm really considering taking On this STUCK SPARK PLUG IN THE FAR BACK HARDEST TO REACH N WORK AROUND PLUG HOLE. LUV THIS CAR

[@chrisg3737]

Very helpful thank u sm

[@4DIYers]

No problem!

[@Lolly82683]

Nothing worked for my 92 f- F250

[@jodyhill5624]

Where are you located please @4DIYers I need help

[@juanvelazque394]

Amigo muchas gracias ! U r # uno !

[@4DIYers]

Thank you so much, happy I could help!

[@TheSteverad]

good tips!!

[@OGGamingJedi]

Your a life saver 🙌

[@4DIYers]

Thank you!

[@INTERNA9]

Thanx

[@myronschabe]

What kind of fuel additive is recommended to help with carbon build up for a 2005 Honda Mobilio?

[@tokenwhite99]

C. A. Weber I use Sea Foam

[@edwinlehman2841]

Mix a little gas in oil and put a little squirt down the spark plug channel and then start taking the plug out

[@Funrunner008]

I bought a 1/2 torque wrench to get mine out, I hope it works

[@4DIYers]

No no no, don't use a torque wrench. If you're using longer leverage, there's a good chance you'll damage the threads or break the plugs. This takes feel and patience. Torque wrenches also aren't intended for excessive force. Use a johnson or breaker bar instead.

[@jwill9877]

Torque wrenches are used for applying things not removing.

[@Funrunner008]

@@jwill9877 I thought you could apply a force limit to the left to make sure they don't break off, I couldn't find anything on a force limit anyway so I took the wrench back. I will be using a breaker after I use some decarbonizer and hitting the ends with a sledgehammer to get it to penetrate the threads

[@jwill9877]

@@Funrunner008 that should work. But before that, heat it up with an acetylene/oxy torch. Make your you get good and hot around the plug before you squeeze the trigger and then make sure you give it full oxygen. And your going to need to see what your doing so no shield. Put your head in there good and close so you can see what's going on. That will definitely solve all our headaches.

[@tonyjordanable]

@@jwill9877 You aren't right...LOL

[@eyeonart6865]

I watched you but you never showed spark plugs being taken out!

[@vintagethings9187]

More of a question than a suggestion, (not ignoring the freeing products), but because of expansion etc, would it help to run the engine to temperature, then chill the plug (somehow? Dry ice, regular ice?). That way the metal around the plug expands, but the plug contracts slightly. Put a box spanner over the plug and seal the engine end with a little silicone? Circulate iced water in it? Syringe in, syringe out? May be crazy or destructive. I don't know. Then quickly, follow the video. My Volvo 940 has seized plugs. The garage says it has a special machine to drill them out and then force fit new threaded inserts. Pricey I guess.

[@4DIYers]

It may work, however the biggest issue tends to be the carbon build up. A top quality penetrating oil usually works such as Kroil, then let it soak for a longer period of time. You can flip a "can of air" over and it'll spray out nitrogen. Typically new threaded inserts are just done with hand tools, they're called a heli-coil.

[@vintagethings9187]

@@4DIYers Thanks for that.

[@danielcortes9960]

Anyone know how to remove a stuck spark plug thread from the engine block??

[@4DIYers]

You'll need an "easy out" for that. There are various sizes available and make sure you purchase a good quality version.

[@tcfite13]

Let em soak in wd40 overnight then just pull them out

[@blackmantalkin271]

Ok thank you bc the Mechanic told me that it’s really hard to take them out and he said I messed up the thread but he doesn’t know because he hasn’t seen him but I’m pretty sure they’re just too tight

[@paulfox4134]

Thsnk you worked for me

[@venomvideos855]

My spark plugs are stuck, but not because of being too tight. My problem is that I start loosening, then after a little bit I essentially loose traction and the pressure is no more. When I try again the same happens.

[@4DIYers]

So they just spin freely, like no resistance? Almost sounds as if they're stripped.

[@venomvideos855]

@@4DIYers They don't spin at all, it's like there's resistance but then the socket slips.

[@steveandrews8301]

@@venomvideos855 Sounds like your spark plug hex head has been worn down on the points and your socket is slipping. Bad situation..

[@venomvideos855]

@@steveandrews8301 I solved it a long time ago, the problem was actually that the cylinder in which the spark plug is mounted was too slim which in turn prohibited my socket from going all the way down.

[@jodyhill5624]

@DIYers what area do you live in please, hopefully your in my area And yes I just subscribed

[@shawnsturgeon1014]

Not so much as a tip but a question.. can I spray a little seafoam around the spark plug as it is known to break down carbon. I’ve heard carburetor cleaner can be use but can also cause damage.

[@4DIYers]

Adding Seafoam from the top probably won't make that much of a difference, you'd probably be better off running it through the intake while the engine is running. Misting water is also known to achieve the same effect, helping remove carbon. Unless you already have the head removed, then you can certainly soak the around the spark plug with Seafoam or carburetor cleaner.

[@WhiteRose-xp4rk]

How to remove the spark plug if the nut was removed from the spark plug

[@waxwarriorde4648]

Ughhh I just broke one off on my motorcycle now I have to get the threads out

[@4DIYers]

Try using an easy out.