WHAT CAUSES ENGINE MISFIRE, TOP 6 REASONS FOR ENGINE MISFIRE

[@AutoRepairGuys]

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[@thomasvasquez6023]

0000pppppppp

[@jonathanmoflori4915]

He probabl masters more than 10 languages then your grandpa. Who give a fk about his accent, what matters is the knowledge that he has and ability to perform the work.

[@goldwolf0606]

1) spark plugs - check gaps and brand 2) ignition coils bad - replace coil 3) oil on coils - oil well gasket, clean well 4) water on coils from washing 5) water in fuel line/injectors 6) bad pcv valve

[@vakerisk1576]

Thank you 🙏

[@learsisalotiv1625]

I think I love u now 😆😘😘😍 🤣🤣

[@claymanbob1]

Thanks! Saved me 6+ minutes.

[@MrMarkeboy1234]

Mine was down to 2 faulty injectors on my tsi engine.

[@billsmith7673]

@@learsisalotiv1625 me, too

[@Jakemott67]

Great video! Very informative , a not so common one would be a clogged catalytic converter. That will create a incomplete combustion with detonation and misfires.

[@Yazmany01]

Interesting... I cleaned my throttle body and intake with 2 cans of throttle body cleaner and now I code for c8 misfire and have a blinking check engine.

[@AlchemistAugen]

@@Yazmany01 You removed throttle to clean it, right? Did you figure out what's going on? I need to clean mine. I changed engine and cabin air filters this week.

[@silvialozano1131]

Thanks so much for taking the time to help others. Bless you and your family long happy prosperous lives

[@mcdonaldgc3020]

You have a good helper

[@davisbrewer6136]

Good job explaining the possibilities for random misfire. You possibly hit on the one thing that I was suspicious of, and that was the chance for water to leak into the coil channel at time of washing the engine. My E550 with M278 engine was running fine before I did some minor repairs around the front of the engine and washed the dirty engine with garden hose. I will look into the coils for traces of water that could be causing the random misfire. Much thanks for mentioning the possibility of water inside the coil channel.

[@georgebanana314]

Another great video. Explanation is clear and easy to follow.

[@trini_boi2414]

Got a code for a misfire and found out it was a cracked coil but I'm still getting a rough idle..going to drive around and see if the check engine light would come back on btw good video👏🏽👏🏽👏🏽

[@LCcervantes]

What's the code

[@speedlife9564]

Spark purcks , love the accent very good video!

[@pacman7959]

Park purks

[@daewonshaun1]

Great video, made it very easy to see everything clearly with the engine on the stand.

[@pabsime]

Great video. You forgot to mention to stop pressure washing your engine bay if that is your cause. Bad idea. Can lead to several immediate or long term issues. Unfortunately whoever needs to hear this can't because they have taken their phone into the shower too many times and can't drive to the store to fix it either.

[@Engineerboy100]

You forgot one of the main reasons, a bad or clogged fuel injector or bad fuel injector connector. Also failing fuel pump or fuel pressure regulator causing low furl pressure.

[@ivanmikhaylov1103]

This is not right for MULTIPLE cylinders misfiring.

[@Jackofalltradejerry]

I was listening for him to say that one of the injectors not working could cause a misfire too.

[@brianheath5091]

@@ivanmikhaylov1103Video says engine misfire, does not specify multiple misfires. Oil leaking into one cylinder from a bad valve cover gasket wouldn’t cause multiple misfires either…

[@robertrice7294]

I think you just have solved my problem thank you

[@jamesmullins7413]

Hi great video but you missed reason 7 and that's because oil gets on the plug or plugs resulting from worn oil rings which allow oil to come up pass the oil ring and soak your plug or plugs with oil causing a misfire,just thought that I would add that because that's what happened to my 2005 Chevy Trailblazer.

[@koolbreeze6303]

Great information I have a 04 Envoy

[@cowcat7436]

everytime he says "guys" take a drink.

[@usiel10jorge]

😂

[@loganwintry9945]

I think you guys just saved me! I have a 2004 Jeep Liberty 3.7 2WD and it shakes when idling or accelerating. It initially stopped when I swapped out the spark plugs but started again 3 weeks later. There was oil on my sparkplugs too! I had suspected a misfire but couldn't understand how because the spark plugs were new, now it all makes sense. I have now subscribed and I think you guys will be my first stop when I have questions in the future. Now I gotta see if you have a video on cleaning out the coolant system

[@Dan-xx5jq]

Thank you so much. This video helps a lot especially since you can see the parts.

[@michaelhanglow5051]

This list is not complete. Their are numerous other reasons for a misfire. But it’s a helpful start.

[@johnrobertpostrado614]

What about the distributor? Could it be also that cap and rotor problem that causes misfire?

[@bobbyfurlow1103]

What about a bad fuel injector?

[@dhowar]

or broken wires to the injector.

[@aviationtechops]

I had coe p0301 seen coil where the coil and the sitting rubber was melted i changed coil and worked well now the missfire came back i have to change all spark plugs before i make things worst thank you

[@whycantthisbeblank]

You forgot fuel injector stuck open. Nice video - thanks.

[@andriesmaila4566]

Good day. I drive 2000 BMW 330i. The vehicle started having stall movements especially poor taking off. Loosing power. The idling started going from smooth to.bad idling as if is a diesel but is a petrol. The vehicle is shaking badly when it idles. Smells fuel as if there is a leakage. Battery power live terminal gets very hot in a way that it leaves burn marks. Check engine light os on. What could be a problem with my vehicle?

[@mikemillie3826]

Did you end up fixing the car my Benz have same issues misfires engine

[@briangreen8887]

Put 1 litre of diesel in the engine oil Let the car idle for 10 min do not rev the Motor Then drain your engine oil Put fresh oil and filter Your car will run like second hand brand new again Start there then we can see

[@kaelamarvin9748]

Catalytic converter or donut gasket

[@kaelamarvin9748]

@@mikemillie3826 catalytic converter or donut gasket my guess

[@marvinmurakami8828]

Check and clean your idle control valve, throttle body, and mass air flow sensor with the appropriate sprays. Check for vacuum leaks as well.

[@mraby32]

Thanks I hope this helps with my 2006 Lexus GS300

[@nicolebraxton6273]

Best explanation thank you

[@miguelherrera6473]

I hade a code 0303 new plugs and coil after checking everything I didn't tighten the plugs whell code when away nawe thanks for the good videos 👍

[@TheKlown82]

Thanks. Keep up the good work

[@kalimanelhombreincreible865]

GOOD VIDEO !.

[@dreamwalker3699]

Great Job on the Video Guys.

[@vin-kingsleyonianwa5483]

I surprisingly found this video very helpful

[@Siz821]

How about broken Plug Lids, are they not causing misfires or jacking moves when a vehicle is in motion?

[@malcomlittle251]

👍 Thanks for sharing !

[@babyj1200jb]

Man these guys are great auto mechanics which They would have sub titles that accent hard to understand but very useful these gentlemen are

[@trailwalker19]

I noticed you failed to mention any sensors and also the throttle which ended up being the very thing after new plugs, valve cover gasket and coils, my car kept dying within one mile from home 8 friggin' times...an expensive Christmas I hadn't planned on last year...

[@hazelstreet1654]

One of my ignition coils went bad after 60k miles in my Honda, so I replaced all the coils and spark plus. It was running perfect again, until two months later. When I accelerate to about 5k rpms the engine misfires until I let off the gas. Then sometimes qt idle it will barely misfire. No check engine lights go on though. What could it be? Did I not screw in a spark plug tight enough?

[@x3trav13zox3]

Good info. Very detailed

[@larrywa67]

Was really hoping you had something I did not try. 2002 Nissan Altima cylinder 2 not firing. Changed spark plug, coil and injector. Also did a compression test and it just won't work. No one goes beyond that point so I am lost.

[@W0mpW0mp999]

What was the issue?

[@AlfredMamuya]

Thanks for your sarport

[@jonathangorwor7832]

I love this trade

[@WCB9175]

Do you have a video on How to fix code PO3200? The code is for manufacturer controlled DTC fan clutch. On 2008 750i BMW. In a part number.

[@Jackofalltradejerry]

I have a 2009 honda Inspire (accord) and th the number 4 cylinder is not firing. I moved the coil to number 5 cylinder and it worked properly. I also moved the spark plug to number 5 cylinder and it worked properly. So my next test is to test the fuel injector which is my next move. So I checked the number 4 cylinder that was not firing again by taking out the spark plug to see it wet, soaking wet. However, when I move the same plug to another cylinder it is not wet.

[@RishardVanAmsterdam]

What about an ignition control module ? Does it also cause a missfire?

[@motodon5686]

Great information thanks

[@samoniumuziejus]

I got ruffly 40000 misfires on each cylinder but the car still pulls fast.. and shows no error codes, not sure if I should try fixing it =D

[@rock_0075]

Hi, Thanks for the video, I have toyota corolla petrol 2002, one day the engine light came on and start loosing power (i had to high rev to drive the car), took to mechanic but the his computer cant read any code , not sure what else i can do. on low speed the engine light stays on but when i go high speed the engine light start fleshing and exhaust noise is a bit loud and feels like miss fire. any guess please?

[@stephensherwin1530]

I have a v6 3.5 L vtec engine that I replaced the valve cover gasket, cleaned all the air intake as well as egr valve passage ways. New coil packs all around new spark plugs and new fule injectors all around but yet my engine still is only running on 4 cylinders (1&2 sound a miss) is there something else I may be forgetting? My next logical step is to step into the head and block to make sure the pistons Still have Orings and that the valves ate opening

[@rmack2311]

Did you find the issue?

[@stephensherwin1530]

@@rmack2311 not yet still have to pull head off

[@lightworker303]

HONDA v6 have issues with piston rings sticking. They had a class action lawsuit. Buy a vcm disabler

[@prestonboling1427]

is the water in your ignition coils common when you power wash your bay? i just did this any i definitely have a misfire. my cel is on blinking and my car shakes like a mofo at idle😂. what else should i check while drying the coil packs

[@chrishayes5755]

i dont get why people power wash their engine bay, that shit doesnt make you paranoid? I'd be scared to destroy everything lol

[@chesterodtuhan5315]

Any idea for P0303 in Cold start only - Elantra GT 2014 2.0 engine

[@HK-el4xv]

Thank you

[@IAmWhatevaUSayIAm]

I have a Mercedes C250 2013. I went to change the spark plugs and I found oil in the plug well on cylinder 4. It was a little difficult to get the oil out and then I figure it out a trick. Roll up a paper towel or blue shop towel so it fits around the spark plug slide it in over the spark plug and turn it until it hits the bottom of the well. I left it there for a few minutes to absorb the oil. Repeat this a couple of times.

[@itsonlyright3108]

Bro I have the same car and my engine light is on is says c4 misfire what do I do?

[@IAmWhatevaUSayIAm]

@@itsonlyright3108 you likely have a bad valve cover gasket like I did. The gasket set isnt very expensive (about $65). Check by pulling your igjition coil closest to the front of the car (cylinder 4). If you see oil on the ignition coil your gasket is leaking and needs replaced. If there is no oil in the spark plug well or on the ignition coil you may just need plugs (gapped properly) and Ignition Coils.

[@itsonlyright3108]

Thank you bro

[@waimeaguyz9074]

Thank you for sharing

[@sylvesterstorer1137]

Do you have any nissan v6 engine I would like to see the colour code for the wire on the sensor for the air intake

[@adeniyiogidiolu3713]

Can the ECU cause a misfire too?

[@JS-ri2rx]

Great video. Keep them coming

[@IronMax418]

What about 02 sensor or Catalytic converter?

[@CoreyHart13]

I'm wondering about the 02 sensor myself

[@shaun787max]

i had someone do a spark plug job about a month ago and everything was fine, last night i had someone create a custom exhaust for me but after ten minutes my engine misfire, would it be the exhaust that caused the misfire or could it be the spark plug job from a month ago just happened to go wrong last night coincidentally

[@vailinator]

Shaun Max if your car has an O2 sensor on the exhaust it might’ve been affected with the custom job

[@shaun787max]

Update: I had a misfire, presumably because I now had more air going thru via the newly installed Xpipe , it triggered the misfire that would of happened eventually due to my already compromised ECU/CAI from a previous tune up

[@eazystreet5507]

Reason number 7 bad fuel filter. Reason number 8 vacuum leak.

[@MICKYSTATEN]

what about a bad knock sensor? Would that cause a misfire?

[@Asian_Connection]

What do you think the issue is when I the car has slight misfiring, slow lost of coolant, smell light coolant odor, old spark plugs 180k, can overheat sometime? thanks

[@TheEihklusivKrossi]

Hi Auto Repair Guys, I owned a VW Golf 1.4TSI MK6 2010 CAXA engine. I have a unresolved issue with the car. My car always throw a flashing CEL when I drag to 4.5 - 5 RPM. Lower RPM under 4 no issue. Plug in computer says P0302 cylinder 2 misfire. Swapped plug, ignition coil, injector, fault stay cylinder 2. Replace plug, ignition coil, injector on cylinder 2, replace High pressure fuel pump, high pressure valve, ECU reflash to factory mapping still fault at cylinder 2 same RPM range. Hopefully you can give some expert opinion on what to look out for next. Many thanks for your help. Regards, Syed

[@francineharding1992]

Can ypu reset the m8sfire on forte 2018 with out changing the coils

[@nipsey3221]

I replaced the spark plugs & ignition coils & fuel injector still misfires 3 & 4 .

[@erikarellanofelix1958]

Use sea foam with full tank of gas and then also check motor mounts and also check your break sensors

[@js2music231]

Hi, I have a 2015 ford explorer and cylinder 2 and 6 misfire only at high ideal like around 35000 rpm and when driving at 55 mpr check engine light start flashing. I change, spark plugs, fuel injector, fuel rail ignition coil all factory parts. And still having the misfire. Do you have any suggestion for me thank you

[@danielvaher]

Hi do you know what is the problem with it having a misfire when cold and a tappets noisy 3.5 v6 petrol getting a code p0303 cylinder 3 misfire. Thanks

[@JeffDees-y2r]

I got a 1979 chevy van g20 can a disturbing seal on the bottom make it miss fire can u replaceit

[@cgsulitdiagnostics8428]

love your video, love your enthusiasm 👍👍👍👍👍

[@craigbullock8245]

My car is in the shop being diagnosed for a misfire. I am keen to know what the problem is. Hoping it is a spark plug or coil. Someone suggested a stuck valve caused their misfire (similar car/engine) so I am hoping it is now that.

[@AlexJones4PresidentInfowars]

What was the cause ? I changed my Fuel pump, coils , spark plugs and still nothing but it has improved a lot in performance

[@ThatTreyDude]

I had a stuck valve on a 3.6 vvt engine that caused a misfire

[@1stBloodyPigs]

What didn’t ya use the coil to push the cloth in?

[@creatingasimplelife1869]

I have a 2012 ford fusion sport with 121k miles. Started with a lean code. I replaced all fuel injectors. Then it threw a misfire on cylinder two code. Changed out all spark plugs, coil packs, & both cam sensors. Still has a rough idle and misfires when coming to a complete stop. Took to dealership had a compression test done…has compression, spark, & gas. Next thought was timing chain. But now the other day when i went to start it..been sitting for a month or so.. it has a hole in the muffler by the air take system. Could that throw a misfire code?

[@realtruthseeker521]

I don’t have a engine light or code but when I come to stop sign I feel it missing like a minor jerk feeling.

[@SeanDIY]

Did you mention bad lifters?

[@Eddythe_Eagle]

I have a question. It seems the 2010 elantra may have a intake manifold leak. Car has considerable vibration at idle but drives ok. The vibration improves after the car heats up. It had been getting worse over the last 2 years. It is a steady vibration. I have a good ob2 scanner. How can i check the problem with the scanner? Plugs are ok, and I am getting no check engine light, or misfire on the scanner from a lean mixture. Thanks Ed R

[@excysyr]

What can be the reason if only 1 cylinder is randomly misfiring only if the engine is warm and always the same cylinder and only while idling?

[@33REX90]

Can a bad oil pump cause this as well?

[@jrblaxxx2340]

The timing can be off that can cause a misfire or the pcm not good or the valve stuck.. just a few more

[@shancharan7834]

Whole time I only listened to his accent........still better than mine

[@TheAngelChristine]

Can you please fix my car! It’s been having misfires for months now even when some shady people changed the coils and spark plugs apparently

[@marvinmurakami8828]

Vacuum leaks can cause misfires as well.

[@benkr5870]

Nice video ! how do the ecu detect a misfire ?

[@hooberdoober576]

Change crank position sensor vid?

[@elwing07]

I like it when he says guys

[@ivanmikhaylov1103]

How to check for water in fuel hoses? How to get rid of it? I have the only code P0300. When the engine is cool, the car runs as a brand new one. after about 10 minutes driving it starts jerking at acceleration. Meanwhile, the engine still runs smoothly at parking, no matter what rpm is. I have replaced spark plugs and ignition coils two times already. The problem persists. What could be a reason for absence of any other codes? Why it doesn't happen when the engine is cool?

[@TomMack530]

i have new spark plugs and they all are gaped right on , new spark plug wires, and still getting misfire ,cylinder 5 misfired 1064 times, #6 misfired 334 times ,#1 misfired 357 times code PO300 ? could it be the coils?? or the injector's???

[@TrueBlueEG8]

what about timing, worn valves/guides, restricted intakes, faulty fuel injectors, blocked exhaust, broken pistons/rings/ringlands, vacuum leaks?

[@totaramchandradatt]

Can a bad purge valve cause misfire ?

[@kalpeshkapadia4623]

Thanks

[@guillermomora2169]

I have a question my van was running good and I just changed oil filter, spark plugs and the oil and after that is missing misfire and vibrate?

[@juniordelossantos392]

What was your problem ? I just done that to my toyota altezza and it misfires badly

[@travisswiggart7506]

Easy to respect this fella shit how can ya go wrong by learning from ones that don't have to be so sharing in knowledge so ya this dudez good shit

[@passion4vintage559]

Hi! Thank you so much for taking time to make all the videos for us. Please help me. Here is my issue. I just bought a 2003 GMC Sonoma SLS 6 cylinder Truck . The truck shakes/vibrates really bad once started. You can literally see the engine moving and shaking. It shakes throughout the drive and also appears to shake even more when at stopped light. Just yesterday afternoon, i was at a red light waiting to make a right turn onto the freeway. Once light turned green as i was pressing the gas and turning my steering reel it became hard to where i couldn’t turn it normally and literally suddenly just died on me. Thank goodness there was no other car making a right turn on the far left lane because when my truck steering reel became hard to turn the car went toward the left side. I tried few times to start car and it started and i went to the left turn trying to turn into the 7’eleven parking lot, right when i went onto the parking it died again. This time it took more times until car started again and this time when it felt as if the car is starting i gas it to help turn on. Then i drove just across to Oreilly and the worker scanned car and a code on his machine detected Cylinder 2 misfire. Purchased NEW: Spark plug wire set 6 spark plugs Replaced it on car. Still not resolved. Upon checking the MAF sensor was no good, the distributor has a line cracked on the number 2 . Went back to Oreilly: Purchased NEW * MAF Sensor *Distributor Cap & Rotor Replaced on car with those too. Again NOT Fix still showing code Cylinder 2 misfire. Issue present: 1.Shaking/vibration on car really bad and loud. 2. Check engine light comes on and off (flashing) I do not want to guess on what it is. Can someone please guide me on what to do next that can fix this. **At this moment writing this comment, i am in the car parked at Oreilly debating what to get. ***also when i moved wire on cylinder 2 to 4 and 4 to 2…it still show cylinder 2 misfire even after moving it to 4. Do i get Fuel filter?

[@arctic7555]

did u ever figure out the problem?

[@passion4vintage559]

@@arctic7555Hi :) yes finally after i was ready to give up! Here the info: misfire cylinder 2. All spark plug and wires was changed new, new MAF, new distributor and rotor replaced …did not fix issue. Had a mechanic diagnosis it and was told cylinder head need to resurface! Took cylinder head out, took to shop to do compression, shaved, and resurfaced the head. Had to replaced 2 rods and rocker arms cause it was bent bad, Bought new head gasket kit, a gallon coolant. Put head back on but car wouldn’t start! Why? Now have to time the distributor again! (Pain in the behind!!)…got car to TDC, distributor back on and at last!!! Car started and working fabulous EXCEPT i have a loud annoying sound! Its the exhaust! While trying to get car to work, someone stole one side of the cat. So besides that it fire up and runs. Hope that helps.

[@mah29001]

Cylinder # 2 misfired on my Saturn SL1. Now I have to pay roughly 900 dollars in repairs from Firestone.

[@kdunhoo7894]

My spark plugs came gap but I didn’t gap myself. I replace spark plugs. Wires but not the coil pack I did fuel injector cleaner replaced the fuel pump But only code that keeps popping up is misfiring cylinder 1/4. What could it be Should I gap all spark plugs my self

[@ekeneobaze1431]

My GLC 300 the cylinder three is misfiring and it’s vibrates P030385 while the car is on 😢

[@TheXilya]

What about o2 sensor 1 upstream. That can give a misfire to the whole bank

[@martinfigueroa410]

I have a p0301 on my chrysler 300 i ran the car threw some water about a year ago i did have water in filter but car didnot hydrolock ever since i have had that code i have change the spark plugs coils and fuel injectors problem keeps going and coming what could it be

[@NormanBailey-q2r]

What about an air leak in a vacuum line?

[@hauxy-i1889]

Hi m8 I got 645ci bmw convertible miss fire only when y drive a while after you start again car show fault start ok

[@jasonyurrrr9994]

Will the engine shake with misfires ?

[@70ciscopereira]

I have a engine misfire po302 replace spark plugs ignition coi all 4. Still misfire on cylinder number 2, we dicided to replace all four injector. Crank again and still have the same problem. Swap ignition coil and spark plugs from other cylinder and the problem continue. I watch one of you many videos for this problem but unlikely I haven't find the problem and I think may be pcm issue. I need your suggestion what could be, or if it's a good possibility of pcm problem or harness

[@KarampudiUday]

i have the same problem , any solution for that?

[@jameswaugh115]

You didnt mention the harmonic balancer shaft

[@kingshanaman]

Love the accent