Changed Spark Plugs And Coils Still Misfiring - What To Do Next!

In this video, I'll discuss some of the most common causes of engine misfiring and what you can do to fix them. We’ll also provide a few tips on how to prevent this problem from happening in the future.
If you'd like more information you can read our guide: vehiclefreak.com/changed-spar...
We cover the following questions and topics:
changed plugs and coils still misfiring
what to do after changing spark plugs
cylinder 2 misfire after spark plug change
problems after changing spark plugs
why is my car misfiring after changing spark plugs
what to do after changing ignition coil
can spark plugs cause misfire
changed spark plugs now car sputters
what does it mean when a car is misfiring
We hope this video was helpful!
DISCLAIMER: Any information we provide in this video is intended as education. Vehicle Freak and it's operators shall not be liable under any circumstances in case of any injury, damage, or any other accident that may occur. By watching this video, you agree to these terms. Vehicle Freak and its operators may earn from qualifying purchases as an Amazon associate.

[@homhomsombat5664]

Ur supposed to help diagnose AFTER spark plug and coils as ur title stated..spend whole time talking about spark plugs.SMH

[@user-eq8tn2fm7j]

Dude wtf bro I already changed the coils and plugs what do I do now

[@CaptainKhalid_26]

​@@user-eq8tn2fm7jinjectors

[@timothyjohnson6372]

Precisely! Talk about a video missing it’s mark.

[@mummaistvan7320]

Horrible video

[@ceciliaclark9406]

​@@user-eq8tn2fm7jdid you figure it out, I'm having the same problem. But he also said the wires too could be the problem.

[@MelisJoy]

I was really hoping you'd go into detail about what happens when you're repetitively replaced spark plugs AND coils as stated in title, but this was JUST about spark plugs

[@zombiechris4813]

Could also be an intake manifold vacuum leak. I changed my spark plugs and coils, and it was still doing the exact same thing it did before. Come to find out my intake manifold vacuum hose was very loose. Could have saved $200 by simply pushing it on all the way and applying a hose clamp.

[@sshmunk]

literally, i never dislike but this was one of those times

[@kman2220]

I totally agree and I also think this guy is a spark plug salesman.

[@_Percy19_]

​@@zombiechris4813 did this fix the issue? I've just paid £200 for new coils and misfire keeps happening

[@beenbeatenbybishops5845]

Every once in a while, one finds someone who is not helpful at all. This guy is one of them.

[@vehiclefreakauto]

Who has already replaced their spark plugs and is still having misfiring issues?

[@Andrew-mb4mg]

I got the code p0303. I replaced the coil and spark plug number 3 and it’s still misfiring.

[@trentonandrews3242]

@@Andrew-mb4mgcould be a fuel injector on cylinder 3 but should look up the code to find more exact information

[@Andrew-mb4mg]

@@trentonandrews3242 I’m gonna try cleaning my throttle body

[@CaseyHealsMe]

Okay I have a 2012 Honda civic LX, 171k miles, I have changed the plugs to ngk, still ran terrible, new ac Delco coils, ran even worse, it threw a code of coil A Wich is piston 1 and I changed it and it helped but still runs like crap!! Now my next step is the injector , because this whole time I'm throwing p0304 misfire and plus are new and so are the coils, the car starts , but man does it vibrate and it's loud! Sooo my last opinion is a faulty injector, I mean idk I'm at my wits end I have a new baby and I need my car running...So i smell fuel out my tail pipe and i smell fuel in my oil , faintly, i can only assume i 4 is stuck open and flooding fuel in piston 4, its my only conclusion , I cannot afford this car down anymore, if I out these new injevtors in an it still runs the same. I'm going to lose it, 10 days on this piece of crap...I need help , it's 155 bucks to take it to Honda lol yeah right

[@CaseyHealsMe]

I am not throwing a code for a bad injector....But I did take em out to clean them and injector 4 was closed and spewed out yellow stuff, I can only assume hydro carbons, but anyways It was a 9V battery operation lol but it was messed up bad, thought after I cleaned it up it would run better but nope, so I can assume that the injector runs worse cause it has more volts from the car battery on it,..I hope it's my injector, I think they are the original ones as well

[@Psylunce]

The header of this video should be changed to 'Engine Misfiring due to spark Plug 101'

[@oluwafemirufai3296]

Thank you for a well explanation

[@vuduyd]

Watch at 2x speed, thank me later.

[@Yoalfi]

Spark plugs and Spark plugs and more Spark plugs..no info on more symptoms of misfire...so no like and follow

[@richardmelton2908]

Make sure you plug you EGR vacuum hose back in. It will run rough and eventually cut off.

[@sm.6731]

A lot of BS! Why not to get straight to the point

[@willcalderon1990]

Do I change the intake system or the air filters.(Last advise of this great video) Thank you.

[@smokemyjohnson6755]

This was useless.

[@kankazesolomon1900]

Thanks

[@vishalkumar-sl4jj]

My misfire continued after new spark plug and new coil..finally discovered that Egr valve remained open due to carbon built up..cleaned Egr and all is ok

[@lorenzosesimmu4855]

How many miles is the car on ?

[@daredeardeal7901]

How do you clean egr

[@demetriussmith4778]

Same thing happened to my truck but I ordered some fake AC Delco spark plugs from EBay and that was my problem all along. After buying the same plugs from my local auto parts store the misfire completely stopped!

[@keithmorrison6176]

i think thats where my problem lies too i bought some plugs off amazon which was a little too short but the madcanic put them still so i think thats where my misfire comes from.

[@StarDeSoul]

No mention of the coil pack?

[@BruceDavis2301]

Mine was put on a computer and it only shakes a little but in idle mode, when I am driving, it runs smooth. Mechanic told me it seems like fuel injectors 03 Dodge Durango 4.7 (274000 miles) driven daily

[@albertomartinez3556]

Can the knocking sensor be one cause to misfire

[@user-du2pw6sg1m]

Hello my friend what is the best type of spark plug x5 e53

[@hooberdoober576]

Change crank position sensor vid?

[@oluwafemirufai3296]

My Honda CR-V 2001 is misfiring and body shaking too, even the battery and check engine lights blinking. I'll give this a try tomorrow. once again, thanks alot. Femi from Nigeria.

[@216edwin]

Any luck

[@a69strat]

I have a 2010 Ford Escape with 4 cylinder 2.5l. Code P302. #2 cylinder misfire. Spark: I checked the coil and it is not bad. Pulled it up and I can hear it sparking. Swapped with the coil in 3rd cylinder and no change. #2 still misfire. Compression.: I pulled out the plug of #2 and checked compression. It was 135 lbs. I checked compression of 3 and 4 cylinder, both also 135lbs, So not mechanical/valve/rings. I put in new plugs while checking compression and no change, not plugs. Fuel: I purchased and replaced fuel injector in #2 cylinder, no change. Engine misfires, but not a completely not firing. Meaning if I pull the the wire connector out of the coil, the engine does drop, a little, but not jumping like if if pull it out of another cylinder. Same if I disconnect the lead to the fuel injector. So if it is not spark, not compression/mechanical, and not fuel, what else should I check?

[@rockstar34960]

Time?

[@christopherjones-yz2jw]

My check engine light was flashing so i pulled over. Ran the code came up p0301 cylinder 1 misfire. (2014 jeep compass b.t.w.) Changed all plugs to ngk iridium. Cranking but no start. Then went and changed out all the coils packs. Still cranking no start. Still a stored permanent code to ecu p0301 could it be fuel injector for cylinder 1? Relay? What should i check for next? Prior to this jeep ran totslly fine.

[@IsaacCordova-bx8bk]

Wires to your spark plugs

[@VicManBRA]

Is it possible that an engine overheat + fuel injector problem due to fuel quality + fuel pump with low pressure(now replaced) could cause an iridium spark plug to last shorter?

[@SirD31V1D]

Yes, it is a type of metal with a good electrical conductivity. If the cooling system cannot keep up with the constant detonation of fuel by keeping it with normal working temperatures (usually between 185F and 220F) then your iridium spark plugs may degrade faster. Cooling flush + Spark Plugs replacement + A bottle of SeaFoam Fuel Additive every oil change would maintain your vehicle very well.

[@lmatos369]

2012 nissan maxima. Cold air intake hasbeen in over a year otherwise stock. Getting rough idle and misfire symptoms and codes for bank 3 . Got all new coil packs, plugs and a new intake cover because the old had leaked oil and the gasket is built in. Caar wouldnt even start at first until i change fuel pump. Any opinions are appreciated, i do have new injectors just tryna simplify a fix so im no dismantling it again for notthing

[@diy_automotive]

What are the specific codes? Are you able to read live data?

[@mathewprinsloo3491]

My car number 2 doesn't fire plug comes out clean as brand new so only 1 3 5 work car starts when crank shaft sensor for bank 246 is unplugged

[@sabayekjubail8730]

Try changing Oxygen Sensor

[@TheBeanMan]

Love the mild hate the towards EJ's in the vid.

[@damionhenry9492]

Would you recommend buying?

[@calgill4252]

How can a failed spark plug make a car run rough when you said if you have a failed plug your car won't start 🤔🤔🤔🤔🤔 If you don't change plugs at all eventually your car will not start at all.... because of fouled out plugs meaning more than one fouled plug not just one or two Your car will run and idle like crap though I like most on here though you would answer our questions on like why do we continue to get a misfire code reading after replacing plugs and wires and or coilpacks....

[@damionhenry9492]

Can I take a chance and buy a used misfire Honda odyssey?

[@9ta572]

I had this problem wit my Mustang got the parts from Ford it still was showing misfire in cylinder sold the car to a muscle mechanic he called me an said he just needed a computer system the car ran great but the check engine light stayed on

[@selenabrown1543]

What about spark plug gap

[@starkusmc1981]

Most come pregapped now, but you can always look up the gap in your manual or online.

[@wdcpaige2297]

I changed the spark pulls and coils and still having misfire

[@dannysautorepair]

Check the fuel injectors.

[@BenjiPOTF]

My brother is having this problem after removing all oils from the cylinders , changing the valve cover gasket and spark plugs. He refuses to change the coils.

[@VqHavoc]

Bro tell him to change them lmao those are one of the main causes

[@BenjiPOTF]

@@VqHavoc he finally caved in after a week , it was the coils.

[@VqHavoc]

@@BenjiPOTF that’s funny lmao I did coils and sparks and still have Issues so next for me is fuel filter and injector

[@MoneyPrinterr]

@@VqHavoc did u find out what it was? I did new spark plugs n coils and I still have 1st cylinder misfire

[@VqHavoc]

@@MoneyPrinterr I’m still have a issue to honestly my next move is fuel injectors So far I have changed spark plugs and ignition coils and still get 90301 and 300 so fuel is next if that’s still the issue then I’m doing fuel pump and checking the co2 or what ever sensor on the cat cause I heard the could throw it off as well and it’s cheap to replace so can’t hurt

[@jacobchingi6524]

what causes misfiring in 1mzfee engine of rx 300 Lexus

[@chrisnevarez449]

Can dirty oil cause a crank no start?

[@nathanielhatchett575]

Did you ever find out ?

[@vxrtex9782]

Mine has the check engine light on and it gives me the code p0301 cylinder 1 misfire detected I took it to fix it and they installed the new cylinder but the check engine light still came on and it has a fault and according to them they told me that it is an electrical problem and it is something from the computer and a module 💁🏻‍♂️

[@robertvanruyssevelt7159]

Buy or borrow an OBD device and check for codes rather than replacing parts at random.

[@samtradder7590]

"Changed Spark Plugs And Coils Still Misfiring - What To Do Next!" and all it speaks about is changing bad spark plugs.

[@johnnywadd7960]

Any videos coming out on catalytic converters?

[@stevewrenches]

Yh

[@joshuamiller2627]

My spark plugs and wires were replaced and I changed the coil pack first but still read misfire then I changed the plugs and wires but still has rough idle

[@mummaistvan7320]

Does your RPMs go up and down when idle? Have same problem. My RPMs when idling, 650 rpm - 700 rpm. I cleaned all the carbon off EGR, MAP, cleaned my MAF sensor, & will be doing my throttle air intake valve. Took the throttle out and soaked it in break cleaner to get carbon build-up off. Make sure if you decide to clean your MAF, use MAF SENSOR cleaner. Wires are delicate. Did you use OEM spark plugs, the brand, gap, your Manuel says? I have used Seafoam for years. Has kept my fuel injectors clean. Look at your spark plugs. Is gap correct, are they dark brown, black only on half, or the entire top? I made the error of using Bosch with my SUV. Only half on top was black after a month. Replaced all with OEM. Air filter clean? Gosh can be numerous things. Usually the spark plugs. Good luck. You don't want to be buying parts and still not running good. If able, try cleaning first 😉

[@mummaistvan7320]

Do you still have a misfire?

[@joshuamiller2627]

@@mummaistvan7320 yes cylinder 2

[@Anthony_Gordon_69]

I replaced my distributer at around 102k miles and that fixed the misfire for a little then it came back as a P0300 code so i did sparkplugs and wires but it came back and i have no idea what to do other than take to shop.

[@abdelhakimessaadi9577]

Same is happening with my nissan altima 2017.

[@Anthony_Gordon_69]

@@abdelhakimessaadi9577 yeah im just gonna take it to a shop

[@W0mpW0mp999]

@@Anthony_Gordon_69 what happened

[@heroblok6]

Some things it could be -Replace Oxygen sensor -Clean fuel injector -Clean throttle body -Clean engine camshaft position sensor.

[@bustahoopa]

Could also be the ignition control module

[@dagreat8089]

Spark plug wires then fuel injectors

[@josephbloggs163]

Perhaps actually diagnosing the problem before changing parts?

[@zachsheffield1325]

It’s about the same cost to replace the parts these days! It can only be three or four things. Changing out all the parts yourself is cheaper than paying a mechanic to change one and paying for him or her to diagnose it as well! You’re looking at $600 to $1,000 or more if 1 or 2 parts & labor, Diagnostics & shop cost! The diagnostics, labor and shop cost is more than 4 or 5 parts!!

[@Tom-yj6mt]

@@zachsheffield1325 Only three or four things? You don't know anything about cars do you?

[@RStevenPage]

I have an older car. I have thrown 3 or 4 parts at the car just chasing down a misfire. Still a misfire, but because of it I have replaced parts that sorely needed to, like spark plugs and ignition coils. I'm not done yet, next is the ERG (EGR?) valve and maybe a throttle body clean. If not for the misfire I wouldn't have done any of these things.

[@hunterhotstepper1219]

Carry the car to do a scan and change coil pack s..plug and still miss fire when u drive it start easy

[@elibnem4126]

Didn't know Tacomas came in a diesel.😂 Otherwise very informative video

[@neilninjine4229]

What if I change the coil but it's still not working, no sign of power no nothing, its the wire can you located where the problem came from??

[@ROD13th]

I have the same problem it’s so confusing

[@scottbeals1166]

How is it helpful to tell me about how spark plugs work in a video with the title "misfire after replacing spark plugs and coils". If they were replaced, that's not a problem anymore, correct?

[@productionvinjor601]

My is misfiring the plugs black oily

[@tontoys4151]

What to do next.... Is to get a match and fire it up.. boomm

[@mariewallace149]

Make sure you have good full coverage car insurance prior to the match. 😂😂😂

[@DonB.-Mulefivefive]

No.....bad info. It is rarely the fuel issue when consistly misfiring. If a new plug or plug wire does not reduce or remove the issue the next likely step is to..... Compression check. Anything less than 20 lbs reading on any cylinder indicates valve issues which, means the heads have to come off. any good shade tree mechanic knows this. Poorly done video dude.

[@archiebrown5298]

Sorry. A failed spark plug cannot cause the engine to seize up completely. Why say that???

[@terrymax5340]

Before seeing g the video . I think it's the injections.

[@mariewallace149]

I agree, I definitely figured it was the fuel injector system. My daughter has my hammy down equinox 2012 and it just started to run crappy. It would shake periodically like having a seizure, sometimes hard to start, and very bad on gas mileage. I told these issues to my ex-husband prior to giving it to my daughter especially the fact that I was getting maybe 10 miles a gallon. He kept ignoring my complaints and just saying that oh it gets better gas mileage than my work truck haha. Are you serious?!! Anyhow, I gave it to my daughter and now she's stuck with all these issues... So I'm hoping that it is just a matter of changing the spark plugs and I am a true believer. When changing spark plugs always change the coils!! Why do a job 50% when you can do it 100%?. My ex-husband said to me yesterday. It's not the spark plugs because they don't need to be changed unless the vehicles 150,000 mi?? Really every video I watch or link I click on keeps bringing me back to changing the spark plugs and the coils.... So I had her oil change today and asked the mechanic if he could put it on the computer due to the check engine light staying on - and he came back letting me know that there were several misfires and he insisted that we change the spark plugs and coils. Haha I wish I knew that he was going to say that to me because I would have had my phone on voice record. Then play it back to my ex-husband. Oh I meant to mention he is a master mechanic for Chevy for the first part of his life meaning he retired there as a master mechanic So he worked for Chevy starting in the late '70s and retired there early 2000s as a master mechanic. So as he finished laughing at my face when I said it could be just bad spark plugs, it very well could genuinely be that issue. For the sake of cost I hope it is as little/big as bad coils/spark plugs. 🙏🙏

[@Remrie]

This video plays like it is AI generated.

[@darkshadowsx5949]

this video is useless. my car only misfires when im about to speed up to pass someone. i have to back off and wait for it to settle down and then its fine. i can pass them. other times it works flawlessly. so coils and plugs are not the problem. they also been replaced correctly with good brands. OEM ones do the same thing. if i didn't pass slow people it would never misfire. the air filter is also new. the engine has been replaced twice so its not that either unless the thing is just lemon trash. replacing the engine and still getting the problem means its not the fuel injectors because those come with a new engine. the only thing i haven't replaced that has anything to do with engine control is the ECU/PCM and that very rarely causes the issue, and its expensive to replace for ""try and see"

[@JCGible]

🙂👍

[@hunterhotstepper1219]

Nissan tida

[@bishtss1]

Repeating same thing over and over, misleading title.

[@RanjanDP]

Your title is still misfiring after changing the coil and sparkplug. But you are mostly dealing with sparkplug. What a waste of time i spent on this video.

[@blackcorp0001]

You repeated yourself about 4 times :(

[@yosefbenshmuel6123]

👍👍👍👋

[@kennethpatrick8945]

Fuil injecter.

[@MeadowviewRiko]

Title is very misleading didn’t help me one bit

[@theodevraj3864]

Very unhelpful video. Your title is misleading. We are watching because we changed the coil and spark plug and still have the issue but you just repeated the same thing over and over.

[@briandrew2689]

You go from spark plugs two glow plugs are you serious

[@markgilbert790]

Title of this video should be All About Sparkplugs. Don't waist your time with this video. Title is click bait

[@stevenb320]

Don't try to post videos with fake knowledge and try to be a mechanic when you know you're not.

[@WeBeTripping]

He talked about spark plugs the whole time smh

[@dirtyd2162]

this is all about sparkplugs WTF

[@kaferere]

Yet another bogus video to waste everyone's time, Thanks KZbin !!

[@gdbro3842]

This really was bad

[@cyrussataravalla6731]

Ma786sai Dua change your distributor cap that grants great sparking

[@geraldfrieberg7921]

Just a tutorial on spark plugs. Not very useful.

[@rigakit]

Ha ha

[@socksonfeet8125]

Useless video. He blames it all on spark plugs, save yourself the time and watch another video. No real info here its just Clickbait.

[@mariewallace149]

Wow people can be harsh!! First of all, no one made you watch the video. You must have found it somewhat useful. If you watch the entire video then write a comment on the video. But before writing a comment, you actually went through all the comments and read them all. then when you see one person write something harsh you decide to join the group and write your own harsh message.... 😂😂😂😂

[@mariewallace149]

Maybe it's my age but back in the day when we all had to work on our cars ourselves, the big huge common repair we all had was indeed a bad spark plug , is the correct verbage here faulty coil wire and or spark plug.. However, I'll get to my point. Just saying that a car running poorly including misfiring, poor gas mileage, shaking, has everything to do with spark plugs and coil wires, especially the year of the vehicle at the time. Most of us those days could only afford a car that was 10- 15 years older than we were. But hey we owned that car which means we didn't have to take out a loan or borrow money from our parents. We pay cash for that clunker... Bahaha

[@TroyStevensStelzerPaintingInc]

AI generated content at its worst. 1.5k likes? I need start a KZbin channel.

[@paulg8065]

So you basically told us next to nothing about the title of the video except you might have put the wrong spark plug in your car. Smh

[@satisfyingvideos841]

Are u mad or what?

[@daniel.forgiven3892]

clickbait

[@anthonypforr6463]

This is bs....

[@hein8360]

No real info... blah blah, see a mechanic

[@kursahdfa7528]

God is coming back soon pls all repent of your sins

[@MrNanah38]

Pure bull shit advice. AI bs

[@jiethrea]

AI generated garbage.

[@thomasowen9803]

A video of what to do about a misfire after you change spark plugs and all you talk about is spark plugs??? Gtfoh

[@Afghan-Pride-Till-I-Die]

I have a 2006 Acura MDX and it's got a nasty misfire on cylinder #5 and #6 I believe!!???!! The Check engine light came back on and I'm so frustrated and IDK Whats up with it... ANYBODY HAVE ANY ADVISE..I'D APPRECIATE THE FEEDBACK! THANKS!!

[@MrRadio1610]

WHERE THE HELL DID YOU GET YOUR INFORMATION... BAD PLUGS WILL NOT STOP ENGINE FROM RUNNING... IMPROPER PLUGS .. YOULL JUST END UP WITH A HOLE IN A PISTON...I ADVISE YOU GET BETTER INFORMED OF YOUR INFORMATION! I AM A MECHANIC. .... AND THIS IS POSSIBLY THE WORST INFORMATION VIDEO IVE EVER SEEN

[@rastapuss3167]

Thanks