Let's have a look at this Kia Sedona 3.5 V6 that has come into the SMA shop with a P0306 Misfire and a complaint of rough running in the morning. Remember don't be fooled by single cylinder misfire codes... they can be misleading! Test Don't Guess!
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the S.M.A. "A-Store" and help support the channel! : http://astore.amazon.com/httpswwwy0837-20
If an SMA Video has helped you out please consider giving using the "support" link on our YouTube home page. The videos take real time to create and pull us away from real work that pays our bills.
--Eric O.
Simply send and E-mail to SMAstickers @outlook.com including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.

49 thoughts on “Misfire diagnosis – kia sedona”
  1. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Lots of Escaping Lightning 🌩 impressive Eric O nice catch on camera @SouthMainAutoRepairLLC

  2. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Great video As Always Dr O was very entertaining Eric O @SouthMainAutoRepairLLC

  3. Avataaar/Circle Created with python_avatars David Martel says:

    That was terrible.

  4. Avataaar/Circle Created with python_avatars Charles Sims says:

    Hello Eric, just found your video. Getting ready to do this job tomorrow on the same model year vehic!e. So what does it mean if there is oil in the spark plug wells? Thank you for your video, it was very informative.

  5. Avataaar/Circle Created with python_avatars zib kabeer says:

    This one would be an awesome waveform. If you could clamp onto a common ground would be cool to see the spark jumping all over the waveform.

  6. Avataaar/Circle Created with python_avatars Lawrence Jensen says:

    It looked fixxed

  7. Avataaar/Circle Created with python_avatars John Doe says:

    15 seconds in… Ahhh! The Electrickery is coming out of the wires! Put it back, put it back! Hahaha!

  8. Avataaar/Circle Created with python_avatars Pw Dr says:

    Thanks for the videos! Part 1 and 2 helped me understand much better what's going on in my Kia Sedona 2005. I've got codes 302 and 304, so, coil 2&4 along with spark plugs 2/4/6 were changed. Also I replaced the ignition coil wiring (connectors were bad). Now, I'm getting code 306 ! Does it means I need to change coil 6? and/or, I should go for 1/3/5 coil & spark plugs & wiring? I'll appreciate your feedback. Keep posting videos like this, they are so helpful! . PWDR.

  9. Avataaar/Circle Created with python_avatars Joseph Park says:

    Can you pls do a video of how to fix a p1159 Hyundai qxg350

  10. Avataaar/Circle Created with python_avatars Pete says:

    What kind of shop lite was that you were

  11. Avataaar/Circle Created with python_avatars Mike Chiodetti says:

    My Wife's 06 Sorento needs coils and wires. Shoulda done that last year when I was doing the back hoses, front timing belt and water pump with the plenum removed. Don't know if the wires can come out without plenum removal. Great Video though! Water works almost every time!

  12. Avataaar/Circle Created with python_avatars Carl Meyer says:

    Had the same problem on my '04 Amanti with the same engine. Was a hell of a light show. Hardly any drivability issues though and never threw a code. Only symptom was a hell of a sound from the arcing, sounded like half the valvetrain was going leave town.

  13. Avataaar/Circle Created with python_avatars Tom Smith says:

    i'm addicted to this channel ! Eric you are a wizard .

  14. Avataaar/Circle Created with python_avatars Abu Abdulla says:

    Sir I have Kia sedona 2007
    There is missing in the engine
    I though may be from the coils
    So I replaced 3 rear coils but the problem is same
    Any idea

  15. Avataaar/Circle Created with python_avatars Savannah Rose says:

    Is it bad for them to have oil on them?

  16. Avataaar/Circle Created with python_avatars Larry Studer says:

    This is EXACTLY what my '05 Sedona is doing. My preliminary diagnosis was bad wires. Gotta pull all that apart. Thanx, exactly on point…youCRASHhas

  17. Avataaar/Circle Created with python_avatars Duncan Mac says:

    Thanks for the video.

  18. Avataaar/Circle Created with python_avatars Darren P says:

    Here is my Kia experience. Anyone in my position has encountered the same thing from Kia. If you cannot supply them with up to date maintenance records on your vehicle they will not cover it. So for instance, if you change your own oil you're screwed. Might work if you saved all your receipts but very few people are in the habit of saving receipts of them doing their own oil changes. This ploy Kia uses is well documented if you want to look it up, I have, and it’s out there. Also my car would be covered under the SC147 recall as the symptoms of my engine seizing up (engine needs replaced) followed the exact same symptomology as those the manufacturing defect notes in the recall. The recall notice even appears on my Carfax report. Again you can find all the recall information online. The reason my car isn't part of the SC147 recall according to Kia is because it is MPI instead of GDI. All the rest of the engine is the exact same, 2.4L theta II. Kia says that because my car uses a different kind of fuel injection method that it cannot be affected by the metal filings left in the engine block which is what the SC147 recall is all about. That's totally absurd on its face but that's Kia's position. The vehicles Kia did recall was done after many government threats as well as numerous lawsuits brought by disgruntled Kia owners for which there are many. Kia's mother company, Hyundai actually recalled their vehicles for the same problem immediately when the issue was discovered. It took Kia several years later to admit to the problem and issue a recall even though they were well aware of the problem. Where was Kia's concern for people being killed due to this manufacturing defect? A car having its engine seize up on the interstate would be something that would concern most companies immediately but not Kia. Unless Kia completely changes the way it does business they will continue to cost consumers thousands of dollars for defective cars and probably end up killing people due to their own negligence. I had to argue, write emails, file complaints with various entities, etc just to get Kia to actually LOOK at my engine at no cost to me to determine the how and why of the engine failure. Kia refused to cover my car even though it is under warranty and furthermore refused to even LOOK at my car to see what caused the failure. I'm still waiting for a callback from Kia with their assessment. Kia actually agreed to take my valve cover off to take a look at my car once I complained as high up as I could to Kia. This was after several months of my car sitting dead on the Auffenberg Kia lot in Metro east St Louis. Kia actually told me I'd have to pay $1500 up front to have my engine failure looked into initially. My constant pressure on Kia finally got them to say they would take my valve cover off for no fee which costs Kia less than $50 in labor. Kia had no desire whatsoever to know what caused my engine to seize up. Their ONLY concern was to avoid any acknowledgement of any responsibility or liability. Kia already knew what caused the engine to fail. The same thing that happened to hundreds of thousands of the same engines made by Kia and Hyundai. It was the exact same problem as the Kia SC147 recall. Taking the valve cover off will not help. There was no oil leak. No oil smell. Never any indication of any problem with the valve cover. It's simply a ploy for Kia to say we looked at your engine and it's your fault. Who would trust their assessment at this point anyway? I'm out thousands of dollars I still owe on a car without a working engine. Don't you think any car maker worth a darn would want to know why one of their vehicles engines just seized up on the highway? Kia's been super lucky so far no one has died due to their negligence. Additionally a co-worker of mine had a problem with his Kia and will not buy one again either. For his Kia the car required a specific oil filter made and installed by Kia and if that was not used the engine fails. He was never told this when he purchased the vehicle. His insurance successfully sued Kia for over $7,000 for his engine failure. Unfortunately my insurance doesn't cover mechanical issues. Ever wonder why your Kia never quite gets the gas mileage it was rated to get? Kia has also paid out for a class action lawsuit because they lied about the MPG of many of their models. The very MPG rating that many people base a large percentage of their purchase decision on. Yeah, Kia lied about that too but kept it hush hush. You can find the information online if you look for it. I had my car into the dealership (Auffenberg) several times before the engine failure telling them something is bad wrong with the car. The Kia service department ran every kind of computer diagnostic and could find no reason for the problems which included knocking, major loss of power, major loss of fuel economy and car dying at both idle and speed. Check engine light was always on and every sensor it said was malfunctioning was replaced and it didn't help. Unfortunately I could not leave my car with Kia. Kia wouldn't supply me with a free rental. They said it was against company policy. My step daughter was dying needing a second liver transplant as all this was going on and I couldn't be without that vehicle. With only one vehicle (other than the Kia) I wouldn't be able to get to work or my step daughter wouldn't be able to be cared for properly. I told Kia this and still they refused to get me a rental while they actually got to the root of my car problem and addressed it. Instead they said sorry to hear that, we can't find any problem with your car. They actually let me leave with a car they KNEW was dangerous and about to fail. They didn't care that my family was going through a serious medical situation with my step daughter and the car behaving as it was only increased the stress on my entire family during this time. Fortunately my step daughter got her transplant just in time and is doing ok now. Not only did Kia sell me a defective product but all this happened as our family is going through the stress of a child being deathly ill, lots of additional costs for medical related expenses and Kia was told this and didn't care. Kia added thousands of dollars to my already stressed finances by selling me a defective vehicle. But it gets even better. The Kia rep in Arizona named Steve that handles my case and many others actually told me on the phone that some of Kia's cars die early and that's just the way it is. He insisted all other car manufacturers have the same problem and also refuse to repair the vehicles leaving their customers screwed too. That's certainly not my experience nor that of anyone I know. Steve at Kia flat out told me Kia isn't going to pay and I'm out of luck because I got a bad Kia and have to eat it. That's what he said. That's Kia’s customer service that said that to me. I have to shake my head and laugh every time I call Kia and their recording says "Rated #1 in initial quality 2 years in a row!" Yeah, and dies in 78,000 miles and Kia refuses to make a full recall or honor it's warranty. You won't see Kia winning any customer service awards or vehicle longevity awards. My advice to anyone that has a Kia (ESPECIALLY if it's a 2.4L) is to trade it in and get something other than a Kia before it dies and your left paying off a car that doesn't run. I liked Kia at one time or I wouldn't have bought one. What I've found out since has opened my eyes to the quality of their vehicles and their denials of their own manufacturing defects even if it could cost lives or severely screw consumers over financially. Buying a Kia might make you think you're getting more quality for less money but it's all based upon lies and cover-ups. That is my Kia experience and it's the WORST experience I've had with any company on any level at any time in my 31 (47 – 16) years of driving cars.

  19. Avataaar/Circle Created with python_avatars spelunkerd says:

    That's a good point, about being careful not to fry the scope. On their new scopes Pico use grounding wires for each capacitive pickup so hopefully any stray current would go there. Have you ever fried a test light with stray current jumping from wires?

  20. Avataaar/Circle Created with python_avatars Worth The Money says:

    Hi, my Kia Sedona has a P0301. It's not banging or sputtering. I was going up hill and it bottomed out. Was hitting the gas and nothing was happening. I was able to get the car home but hoping that I don't have to replace all the coils.

  21. Avataaar/Circle Created with python_avatars DigitalYojimbo says:

    "Champion plugs" there's your problem lady.

  22. Avataaar/Circle Created with python_avatars Tyler Hanson says:

    I had this same problem with my (guess what) 2004 Kia Optima, that same red car you worked on, except mine is blue, but I fixed it. 😀 I replaced the coil packs

  23. Avataaar/Circle Created with python_avatars Parknest says:

    Those spark plugs are well past it. I would renew than along with the coilpacks. Gonna watch part 2 now…

  24. Avataaar/Circle Created with python_avatars DaTwistedOne1 says:

    Biggest pet peeve of mine is seeing incorrect plugs in an engine. What in the world would make you want to put Champion plugs in Hyundai/Kia engines. NGK or nothing IMO. Its like putting Motorcraft plugs in a vette..lol USE THE RIGHT PLUGS!!!.

  25. Avataaar/Circle Created with python_avatars yep its me says:

    I freaked out some people by sticking my fingers in a spinning fan on an old el camino.      I was showing them it had a bad fan clutch. I stopped the fan and spun it backwards. Their eyes got big as saucers when they saw me stop the fan.

  26. Avataaar/Circle Created with python_avatars Geo Jor says:

    good stuff Eric …

  27. Avataaar/Circle Created with python_avatars Todd Erickson says:

    I'm curious about what spark plugs are in the other half of the engine because I have seen single platinum spark plugs kill waste fire ignition coils. The negative (backwards firing) side of the ignition coil the spark has to jump from the ground electrode to the center electrode. No platinum (sharp edge) increases the KV demand especially during lean tip in.

  28. Avataaar/Circle Created with python_avatars ryzo mcgregor says:

    A motor with 130 thou on the clock for all it costs to buy new coils and a set of plugs.

  29. Avataaar/Circle Created with python_avatars Matt_R says:

    I have the same van and if you have a bad coil, you have to replace all the coils, wires, and plugs with it. Otherwise the misfire just keeps coming back, learned that one the hard way…

  30. Avataaar/Circle Created with python_avatars HUBBABUBBA DOOPYDOOP says:

    THAT is the main reason I will never use propane or BPC to look for a vacuum leak. Either spray some water- or smoke test.

  31. Avataaar/Circle Created with python_avatars 02lowrider62 says:

    I just did a 05 Sportage  2.7L with dead miss cyl. #3 inpossable to really check wires while running, so once I got upper intake of Kia has bidirectional test for coils KOEO found with test light end of wire spark going to side of plug hole very good test

  32. Avataaar/Circle Created with python_avatars toppledgod says:

    New plugs and clean the grime off the coils before condemning them.

  33. Avataaar/Circle Created with python_avatars WEStTEXAs says:

    30° is warm weather! ! 😂😂😂 ?? its 42 ° over here in TEXAS and I'm freezing my ass off.

  34. Avataaar/Circle Created with python_avatars Emt Scythe says:

    Kias and Hundays both have high failure rates on their coils. We replace tons of them. Korean junk. We normally replace them with either BWD or Wells coils depending on what the customer wants. OEM coils don't seem to last but about 6-8 months.

  35. Avataaar/Circle Created with python_avatars throttle bottle says:

    looks like 0.060+ gap on them, coil/wire cookers, but maybe the video is just funky

  36. Avataaar/Circle Created with python_avatars LearningZone says:

    Excellent video. Seems the spark plugs are way too old. They needs replacement. Looking forward for part 2.

  37. Avataaar/Circle Created with python_avatars Drew99GT says:

    Eric, do you charge a fee for basic diagnosing like this? I've seen you mention in other vids about "if we get the job". Most shops charge at least a hundred bucks just to look at your car!

  38. Avataaar/Circle Created with python_avatars Ron Price says:

    Typical. I would replace all coils wires and plugs. It needs them with that mileage anyways. Also verify those are the correct plugs for the engine. If they are not that is what might have put extra strain on the coils causing them to fail. I'm sure that would fix the issue. But even if it doesn't it was needed and especially needed to do any further diagnoses if neccesary. And I haven't seen many customers not fix something like this. My old boss at a small two bay shop with the same repeat customers for 20 years always said. If they brought it in, they want it fixed… Of coarse we would still call them, but if they couldn't be reached and we knew them well we would just fix it. That shop was like that… More like working on family's cars. Since they were the same old people over and over.

  39. Avataaar/Circle Created with python_avatars Stoney Burke says:

    Eric, where did you get that ne gooseneck flashlight?

  40. Avataaar/Circle Created with python_avatars Jim Silva says:

    30 degrees is warm? Here in Hawaii its 75 to 80 degrees ever day

  41. Avataaar/Circle Created with python_avatars Tom O'Connor says:

    Getting withdrawal symptoms —need part 2 !!

  42. Avataaar/Circle Created with python_avatars robert brockwell says:

    If only they were all that easy