Spark Plugs, Plug Wires & Ignition Coils on a 2004 Hyundai Sonata

Replacement of the Spark Plugs, Plug Wires & Ignition Coils on a 2004 Hyundai Sonata 2.7L.
Yoshi Motors Spark Plugs, Wires & Coils Package:
amzn.to/3nxElnR
NGK Spark Plugs, Wires & Coils Package:
amzn.to/418AzyZ
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I am a self taught mechanic of over 30 years in the field. Helping people save money and stay safe on the road is what I am here for. If I can pass that along in my videos, that would make me feel even more accomplished. I am rather old school and do not really do things by the book, for this reason, I do not claim to make "Instructional" videos. My videos are for entertainment purposes only. Please use safety and knowledge when doing your own repairs. ~ Ben - MegaMiles
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[@latedriver9019]

Thanks for this guide. Just did all plugs, wires, and coils on an 06 santa fe. Same engine, damn near identical layout. Took me 4 hours in total. Not a bad job, just tedious. For anyone else doing this job, I did not remove any coolant lines, just moved them a smidge while loosening the coil pack bracket.

[@MegaMilesBen]

Thanks for watching!

[@Thirrtyeighterr]

Thank you for this!👍

[@MegaMilesBen]

@@Thirrtyeighterr thanks for watching!

[@robertbradbury3072]

Great video. Very helpful for mapping out the job before getting into it. Just going through this now with an 04 Santa Fe. I have already changed the plugs and wires. IDK when the plugs had last been changed, but there was nothing left of the electrodes. Runs so much better, but still a random misfire and power loss going up hills. Only thing left is my coil pack. I suspect that with the electrodes MIA on the plugs, the coils started to short out internally. Seeing you struggle with the coil pack made me think that with my large hands there has to be a better way. Rather than drain the coolant system, considerable room can be opened up by take the two outer coils off the frame. They only require removing 2 Phillips screws and an electrical connector. With those out of the way it is easy to get at those 2 lower 10mm.

[@MegaMilesBen]

Thanks for the good info! I dont think about bigger hands, Ive always been a smaller guy. I always felt like I was specifically built to work on cars lol.

[@latedriver9019]

Bit late, but I just did this job and did not remove the upper coolant line. Probably wise to do so to avoid damaging it, plus you have a lot more room to work. Tight squeeze without removing upper coolant line, but it can be done.

[@davidg5704]

According to Haynes manual are incorrect with coil numbers 63 52 41. It s/b 365214. Firewall 135, radiator side 246. Ever done lower manifold on these? Mines not leaking but 18 yrs old 80k. Replaced all other gaskets. Thanks for video. Time consuming to work on. Glad I work on own car it would be very expensive to pay someone to work on this V6.

[@MegaMilesBen]

I dont believe Ive had to do a lower manifold gasket on one of these yet. Thanks for confirming that. I found I think 4 different firing orders for that car, even using prodemand/mitchell.

[@davida871]

HAYNES manual has coils numbered 635241 but I took off my oem coil and it's marked 365214. Connected coil back up using 365214 and it started up perfectly so book is wrong. Dyslexic proof editors at Haynes apparently. Kia offers no support either.

[@davida871]

Furthermore I took picture of NGK wires before removing and they are numbered and confirmed it's correct.

[@davidg5704]

​@@davida871vehicle ran perfectly using 365214 coil numbers. I think manufacturing messed up location of coil wires. 4 pin plug includes 3 coil wires and 3 blue wires pin#2. That would explain many firing orders. Wow Kia/ Hyundai.

[@davida871]

When testing individual coils ohm resistance I don't think it matters firing order as long as spark plug wires match up with coil wires attached to each coil. This would explain the multiple sequence of coil numbers at both ends of coils 3,6 & 1,4 vs 6,3 & 4,1. It might be due to aftermarket coils versus oem coils and there coil numbers.

[@gqftoast]

Very well made and filmed video, I filed under it my "Sonata horror" file haha.

[@MegaMilesBen]

Thank you for watching!

[@nikkimoore1838]

i was so afraid i wouldnt find my car on youtube. i’m dead broke so i’m gonna try this w my uncle haha

[@MegaMilesBen]

You can do it!! :)

[@tacoslosgatos3883]

Thanks so much, this video is amazing and well produced. I had a funky timing order too when I opened mine up. You had an order of 63 52 41. The diagram I found online showed 36 25 41. My car (and another user in a forum) had an order of 36 52 14. Gave me a scare but then I read that all of the above work as long as you keep the pairs together. So far my car seems to be working ok, we'll see if it dies here soon :)

[@MegaMilesBen]

Youd know right away if you had any crossed. Itd misfire at the very least. Thanks for watching!

[@billprice6248]

Great video , know i can do this. thanks

[@MegaMilesBen]

Thanks for watching!

[@fatdaddymws]

Very well done! Much appreciated.

[@MegaMilesBen]

Thanks for watching!

[@111coldplay]

Thank you for saving me $100.

[@MegaMilesBen]

Thanks for watching!

[@TheMrBennito]

Splendid vid, super clear. Looking into a sonata 2.7 2005 so try to get an idea of the possible complications. Tx!!

[@MegaMilesBen]

Thank you for watching!

[@dereknguyen9127]

I am assuming replacing the gearbox would be the same process?

[@MegaMilesBen]

@dereknguyen9127 do you mean the transmission or rack and pinion?

[@dereknguyen9127]

@@MegaMilesBen entire transmission replacement

[@MegaMilesBen]

@dereknguyen9127 no, thats going to be a different process. The transmission comes down under the car. I can tell you book calls for roughly 8 hours for removal and install. If at home and unexperienced, Id say itd be at least a weekend project. I dont do transmission or engine swaps here. Every once in awhile Ill take a swap but only if its one Im comfortable with like honda or subara. Even then, I really try to stay away from transmission work due to liability issues. Im not trying to buy someone a new transmission lol.

[@dereknguyen9127]

@@MegaMilesBen oh nooo i wasnt going to ask you to buy a transmission, i am going to, i broke my reverse gear hahaha story of my life

[@troydenison9444]

Where does the small black and white wire go

[@troydenison9444]

It's not connected to anything just hanging

[@MegaMilesBen]

What wire? Can you give me a point in the video or more information please?

[@davidg5704]

Small black & white wire connects to coils 1 & 4, Yellow stripe wire connects to middle coils 2, 5. Red stripe wire connects to 3 ,6 coil. Coils numbered 365214 from firewall to radiator. If plug breaks blue (ground) goes to Pink wire . Black ground wire bolts to coil pack with attached eyelet above 12mm bolt holding coil to block near thermostat end.

[@SensiiNips_]

Does the 2.7 V6 and 3.5 v6 use the same coil packs ?

[@MegaMilesBen]

I dont know, sorry. Good question for the parts store.

[@latedriver9019]

Go to 1a auto and you should find what you need there no problem.

[@ulyssesboulton6599]

i’ve got a misfire in my 4th cylinder (i have a v6) i believe it’s the ignition coil could i replace just one at a time?

[@MegaMilesBen]

Yep

[@ulyssesboulton6599]

@@MegaMilesBen how do i replace it without replacing the whole pack tho

[@MegaMilesBen]

@ulyssesboulton6599 its actually 2 at a time. Each block can be done separately. Theres 2 screws holding each block in place.

[@ulyssesboulton6599]

@@MegaMilesBen oh ok do you have to move anything to access the screws

[@MegaMilesBen]

@@ulyssesboulton6599 the video shows you how to remove the coils.

[@danielatorres9730]

would this be the same process for a 05 hyundai santa fe 2.7?

[@MegaMilesBen]

Yes, I do believe so.

[@markb3129]

That's a lot of work to change sparkplug and wires. It's got to where you have to remove a lot of parts to do a simple job🤦. ✌🏻

[@MegaMilesBen]

A lot of V6's need the intake manifold removed. Not all of them have so much attached to them. My biggest issue in this one was the firing order but I got it down :) Thanks for watching!

[@yahiyamuhammad3008]

👍

[@Thirrtyeighterr]

Thank you for this!👍