This was a SUPER good tutorial.... If I can add ONE thing to this video it is this..... when you take the plenum off and you have exposed the six lower intake manifold runners. You should REALLY consider covering that up with a rag or tape while you are working... cuz if you drop ONE bolt or socket or ANYTHING metal into one of those runners..... BYE BYE motor..... you are gonna have a serious problem if something small drops into one of those holes BEGGING for something to be dropped into. The law of Mr Murphy.....

Thanks a million! I have a 2004 Sonata GLS 2.7l V6. I paid $1000 for it in 2019. It came with 184k miles. Whoever had the car before me kept it serviced. Ive changed the oil twice since. It just hit 196k miles. Work is right down the road and other than that I stop by the grocery store. Without a doubt its one of the best automobiles Ive ever owned. At 52 yrs old, this may very well be the last one. Thanks again for making such an arduous task do-able.

When reassembling, tighten down the front bolts of the intake manifold first so you get a good seal on your manifold gasket or you'll roll the gasket and cause it to leak. Found out the hard way myself.

about those little metal clips on the electrical connectors. just so you know you dont have to pry them off, simply press down on the metal clip and pull the connector off....then you dont have to worry about losing them. Your Welcome!

Thank you a million times over, im handy with cars and i just picked up a 2005 tucson 2.7l with 186k on the clock, the spark plug electrodes were down to nothing, i was getting a headache over looking at how to access the rear plugs and you just lifted all the weight off my shoulders. Cheers!

Probably the best how-to diy car repair videos I've seen. And with my unfortunate luck, I've watched a lot of them

Kudos to you sir! I have to dive into this procedure myself but also have to replace a valve cover gasket because it's leaking onto the exhaust manifold. I must say, I have watched a few videos by now on KZfaq on the topic and they were terrible! I'm not sure why people even think they should present themselves on KZfaq or any other public viewing media? You covered the procedure exceptionally well, easy to follow and very accurate.Thank You Sir!

So, i did this today following the video and would REALLY like to thank you for the very detailed instructions. Well, i said i did it, but actually i got to the point of putting the plugs in, ran out of daylight shortly after so going to put it back together tomorrow. For anyone looking to do this job yourself i have some input: Those back three bolts...one is easy, and as you pointed out, the other 2 are blind, you can't see them at all...Infact most of the time it took me to do this involved the middle and right bolt (the left one you can see as he said), the other timesink involved the "vacuum lines" under the throttle body. This took me 3 hours, and it was on a 2.7l Santa Fe, but its the same engine and judging from the video the rear is just as cramped in a Santa Fe as it looks in a Sonata. But yea, THANK YOU VERY MUCH FOR THIS VIDEO, IT HELPED TREMENDOUSLY. ^_^

At 9:35 you pulled off an electrical connector from the throttle body. Mine had two of them side by side that were exactly the same connector. Switching them when putting it back together caused it to run rough, not shift, and through a few codes. Took me a while to figure out what I did wrong. By the way, you made this job look easier than it really is. Great video and thank you for doing this.

I just did this yesterday on my wife's 2005 Sonata. This video helped immensely. I did not have any issues removing the plugs. However when I put the new ones in, the black rubber grippy grommet in my spark plug socket kept coming out and staying on the new plugs. It was a pain to get out of each spark plug well. I did break a short (4"-5") vacuum tube that attached to the plenum since it was brittle. 5/32" was the replacement hose that I bought. Some of the wire aligners/separators /holders broke because they were so brittle. I bought a 1.5" 3/8" extension for the back right and left rear plenum bolts per the video. I also found my 10mm ratcheting wrench handy for removing the bracket that holds the cruise control and throttle cable. Thank you for the awesome video.

I've had my wife's 2003 santa fe 2.7l plenum off...this will be the third time. Currently she is at 327,689 miles I believe the two hoses on the bottom of the throttle body are coolant hoses. Don't pull them off without clamping them shut.

Going to replace my spark plugs tomorrow, super nervous but if I can fix and build computers, I'm sure I can disassemble some car parts. Great vid! TY!

Awesome DIY video. You made the job look easy, even though, the job is a pain in the buttocks. Thank you for the knowledge. Also, a lot good info in the comments from some knowledgeable subscribers.

Also a tip once you find the bolts in the back make a mark on the firewall for future reference! Thanks for your time and help!

I just bought a 2004 Hyundai Santa Fe with 90,000 on it, that is in like new condition. After taking off the engine cover I found a rodent nest! I guess Hyundai's are popular with the animals. Thanks for the video, it's going to help a lot when the time comes.

Just like a water pump and timing belt always change together, when you get to the spark plugs in a V6 you’re close enough to do valve cover gaskets. Just what I usually do.

Great video!!! Very detailed, and I appreciate how you go above and beyond with the advice about other things to look for while you are in there. (Living things, throttle body cleaning, gaskets etc.etc..etc...) Must respect!!! ( not sure how the air gun couldnt break those nuts, but thats another topic!!! Hahaahha just kiddin my guy😂🤣😂🤣😂🤣😂🤣) much appreciated, keep'em coming!!!!

I love this video and this guy. I watched two others where they did not totally remove the plenum and they had to work at ridiculous angles while the plenum was raised up with boards.....it was not that time consuming to remove the plenum. Once I saw this video I decided I could do it myself. Thank God I did not try it the way those other guys did - when I got to the center rear spark plug I found it probably has stripped threads, meaning the aluminum head is ruined. I did not remove it all the way, just snugged it back into place and left that old spark plug. The 3 front plugs were bad, the back ones for some reason looked much better. I'll use the car like this while I look for another car. If I had done this the other way i would have assumed the difficulty i was having was from the bad angle I had to use with the plenum in the way, and taken out that plug and probably never gotten one back in. :-(

I just followed the video to replace the plugs on my daughters 2005 Tiburon V6. Worked great! I did NOT need to remove any cable lines. Just unbolted the bracket. Also didn't need to remove the hoses on the bottom of the throttle body. Maybe the Tib is a little different than the Sonata. I can't believe our car was still running after seeing how bad the plugs were! The gap was huge.

Thanks. Instead of removing the cruise control cable, I removed the two bolts from the bracket that attaches the cables to the air intake manifold. That also gave me more flex-room to get the two hidden rear air intake manifold bolts.

Very comprehensive video thank you. Kind of rare these days

Alrighty, gonna go get this done!!! Thanks for the video

This is a LIFE money 💰 saver. Thank you So much

Hey I got one too 218k still runs great what you did I did in 2016. People change your oil reg that was a great and informative vid. Australia

I found the back holes on the plenum wouldn't line up... started and snugged up a front bolt and they aligned perfectly. Also I put a piece of blue masking tape on every hose and wire I removed just so I wouldn't leave one off. A small inspection mirror was also useful. Thanks for your help, she runs MUCH better.

This is a great video, thank you. Two of the three bolts hold a hose in place. After reassembly I found the loose hose and wound up pulling the rear bolts to reattach the hose.

Dude that was very helpful, You explained what's what and how to do it. I just bought a 2002 Hyundai sonata and it needs TLC... brakes, ball joints, front valve cover gasket and both axles. Now I'm starting with replacing intake gasket... Codes say 02 sensor, MAF sensor, or vacuum leak...first im looking for vacuum leaks... Thanks again brother.

Thank you for this. I like having a V6 but times like this I wish I had 4 cyl

Excellent presentation.Thank you.

Thank you. Spared me a shitty day.

Great video! Thanks for posting this!

Thanks some much, this is quality, its vídeo help me, because I bought the kit cables electriplugs and I was trying to change my self but when I remove the screws, surprise its has a lot of silicon and I was too dificult to take the exhaust manifold 😅

Aw awesome walkthrough thank you so much for your help man.

Great details!!! Thanks

wow man what a great video thanks so much this is really going to help me out!!!

I just replaced plugs in a 2008 tucson 2.7 and found the easiest way to remove the rear support bolts was remove the throttle control first give you room to get behind with a short ratchet to get the bolts out don;t have remove the throttle cables either .much simpler .

Good video. I recently did this on a 2007 Hyundai Tucson V6. It is very similar, except 1 extra bolt in the back and a few more electrical plugs

Excellent detail thanks!

thorough and much helpful, i thank you sir.

Very good video. Very helpful. Thank you.

Nice video, Looks like it's gonna take awhile when i try doing it

Thank you for your detailed video. Great instructions.

Haaa i just used your video to refind the cylinder fire order.. i thank you for that as well!

While anti-seize can add resistance when applied to the threads, the plug will still make a solid ground at the base of the nut/washer so it really doesn't matter. And the 10k+ volts would render any resistance it might add moot. If you've never had to repair a plug hole your just very lucky. So for 12V grounds I'd agree but for plugs I always use anti-seize.

Thank you sir, very to the point and informative made the job easy!!

OUTSTANDING PRESENTATION (registered HONDA tech emeritus here).

Bravo! Most don't follow through with the reassembly. Big help. Thanks.

thank you for your contribution to the compendium of human mechanical knowledge

awesome job! THANKS

Thank you for putting up such a well explained video. Your instructions were right to the letter. M 2004 sonata has 233000 m.i. The last tune up was done by a mechanic? or so he says. He not only put the wires to the wrong coil, but he didn't replace the back bolts. Drivers side and center were not there. After feeling around for about an hour,I got a small mirror and there were no bolts there. I'm sure if he were to watch your video, he would really learn a lot. While this is apart, I will clean all intake hoses and throttle body. Guess if you want it done right , do it yourself with the advice of a real mechanic. Again SIR I would like to thank you.

Thank you Excellent job

Thank you ever so much for making this video to help out "MUTE DONKEYS" aka dumb asses such as myself. I can do this. Thank you once again.

Excellent video. Best I have seen.

Thx Bro You saved me $200 bucks!!!

Questions: Do you see a problem removing the back bolts first ? I am asking because if I cannot do that part then I'll quit right then and there without having dismantled the rest. Thanks for taking the time to put this video together. It is REALLY helpful P.S: Note, for future videos, a mirror might help showing hidden parts. I haven't gone exploring yet (it is my girlfriends car), but I am afraid that I might remove the wrong bolts in the back.

Great video thank you sir very helpful

Excellent video thank you

Thank you for the video....it was very helpful 👌

Cool video. Thanks!!!

thanks that was well done i can do my hyundai plugs now cheers

I changed the front 3 @ 112k and it now has 190k and it runs great

I just did the plugs and wires and it was a pain in the ass but it was worth it in the end it drives so much better and has a bunch of power i never knew existed on my 2004 hyundai sonata 2.7

The metal clips on the connectors should not be pulled out ... simply squeeze in on it with your thumbs and pull the connector. It's designed to be super-easy to quick-release the connector.

Great video & good tips, but don't see the need for the swivel so much! Seems awkward! Probably just had it handy or a good reason to use an over price tool!. It is cool that you went hands on instead of power tools.! You did it right!!

Awesome! Thank you!

Thank you!!

Very helpful video.

Nice video. I wanted to ask if you've tried pushing in the wire clips on the electrical plugs instead of removing them? My BMW wire connectors have a similar wire clip and they just push in and then pull the connector right off. I learned this after several lost clips as they are under tension. Good luck!

Good video bro

The spark plug is ALSO grounded thru the metal ring at the end of the thread. I gather all the 3.3, 3.5 and 3.8 hyundai/kia lambda engines are extremely tight to get out and most people use anti-seize on them for fear of stripping the head next time they change the plugs.

i doing my 2003 tiburon tomorrow. thank you for the video. it's not going to be ease. but i can do it

Very well done.

Thank you!

YOU DO NOT have to remove the cruise control wire!! I did, based on this video, but after watching several other videos on the same vehicle, they lifted up the air intake system without messing with the cruise control wire at all. Now I have no idea how to put the wire back in place haha. Any tips?

Thanks so much for the video! Was still a huge PITA. I can see why you only do this every 100k. Took me about 3 hours.

Appreciated!

ouu shite after this video I cant wait till the morning to replace my spark plugs. Replacing them always make your car feel like a new machine. My buick was pretty much revived after replacing a few snapped ignition wires and plugs. (surprise it even started i was running on 4 cylinders.) Im excited for this lil repair cause my hyundai really does need it. Got the car for 500$ and its a fixer upper but its a great car

Awesome!

Thanks for showing me bro👍 I'm going to save $560.00 plus tax for just a tune-up on a Hyundai... 2020.. Yesss😷👍🙏 if I had a girlfriend she will want it.. Lol🤣🤣🤣

Those clip e connectors can be removed without taking out the wire clip just push down on the clip to release and pull found that out the hard way

Thank you 🙏 your Video to a public is easy to learn from you good job thank 👍. but this Engineer is badly Design is it too much work to change others 3 sparkplug .if do the tuneup and change spark plugs you good job 👍

I got a kia optima V6 2.7 2006 similar engine got the manifold off but I can't the the spark plug bolt down in the back of engine to remove the plugs do I need a shorter extender?

A heads up about a torque wrench at the beginning of the video could be cool broke a head and stripped out threads on another

I have a 2002 Sonata GLS with the exact engine and setup. I am going to change the plugs and wires . When you replaced the Plenum gasket did you have to use some gasket sealer or did you just put it in as is ? This video is great and very helpful, I was just wondering about the gasket installation. I enjoyed the video a lot. Thank You

What is the name of the vacuum hose at 8:49 this hose is disconnected and broke at the tip where it goes at the intake manifold. The car is misfiring could this be the reason?

how tight does it have to be? until you feel resistance?

Hey God bless you.i want to know are this car are good and easy to fix.i really got my eye on one 2005 Hyundai Sonata please let me know

Hello, I cannot get the rear bolts (even one) started. I see it line up, but I won't start. Maybe the position of plenum?(angle) Any suggestions?

Any body can help me with my tibby im haven problems its just the cam shaft sensor i changed it last month bt my engine light comes on saying low voltage is it my alternator going out ? Or my maf sensor doing all this ?

I started to take off the wires on the front plugs and can not get them off! I used a wire grip tool and still could not get off. I was afraid to pull too hard or they come apart? Suggestion? Car has 128k on plugs...

Excellent video. I'm probably going to tackle this job. I did the front 3 plugs months ago. Now cylinder 5 is misfiring, so now the tough part of the job. My quote from mechanic was $732 to do just the back 3 plugs, wires, and new gasket. Question, did you put any sealant on gasket when putting back together? If so, what sealant do you use on the plenum gasket? Is sealant needed to prevent vacuum leak? Thanks for video!

I'm having trouble with the bolt on the right side under the throttle body.

How about iridium plugs instead of platinum? The dealer recommended them.

How long did this take you?

hyundai tucson 2.7 v6 sparks recomending ?

When you took off those two vacuum hoses did anything come out of them? I changed my spark plugs yesterday but it forever because I didn’t know if anything would come out of those vacuum hoses so I had to change my plugs while they were still connected to the intake

My 2003 Hyundai Santa Fe is ticking, I'm assuming its a lifter and the ticking noise is coming from the back valve assembly. My question is: Would it be ok to replace only the lifters in the back assembly and skip doing the ones in the front? I wish I could isolate exactly which one is making the tick, because I would only like to replace just that one, but I figured I'd replace all - at least in the back valve assembly. I'm trying to save money and dont want to buy all 24 lifters if possible. I also do plan on doing the plugs, wires and gaskets as well. Any information/tips would be appreciated. Great video!

Do you have to replace the wires too? Or could you just get away with just changing the plugs?

How do I put the cables back

WHOA! 2007 Tucson SE 2.7L V-6 here; for the life of me I cannot locate the 'hidden Hyundai bolt' at the right rear (standing in front of the vehicle) of the upper plenum, aka surge tank. Can anyone help me out on this puppy?