Spark Plugs and Coil Install CTS VSport LF3
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- Опубликовано: 2 июн 2024
- How to change spark plugs and/or ignition coils on the LF3 motor in the CTS VSport. This applies to the 3rd generation Cadillac CTS (2014+) with the twin turbo V6 motor.
Spark plugs: www.rockauto.com/en/moreinfo....
Ignition Coils: www.rockauto.com/en/moreinfo....
Gapper: amzn.to/2TObDxq
Feeler Gauge Gapper: amzn.to/2RIsoHM
Torque for plugs: 13 ft-lbs
Torque for ignition coil bolts: 89 INCH-lbs
Torque for charge pipes to manifold: 80 INCH-lbs
Cylinder numbering front to back:
Passenger side 1-3-5
Driver side: 2-4-6
If you are interested in buying any of the tools or products shown in this video, please use the affiliate links. As an Amazon Associate, I earn from qualifying purchases and this really helps the channel grow.
VSport Facebook Groups - Be sure to answer the questions!!
Cadillac CTS VSport Owners: / 364419117077016
2014+ Cadillac CTS VSport Appearance/Engine Modding/General Car Discussion: / 974763435994990 
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My car was misfiring. The dealer quoted me $3k to change the plugs and coils. I found your video, and the step-by-step instructions were Amazing! It took me about two hours from start to finish. First time working on the car on my own. Thank you so much! I really appreciate your content.
Wow great story! I’m amazed you got it done so quick! Also $3k is ridiculous
Used these directions to change the plugs in my 2015 Vsport with 71,000 miles. Thanks, you took a lot of the mystery out of all the vacuum lines and whatnot.
Same here had a cylinder 5 misfire code so went ahead and changed all 6 coils and plugs however my car still does a weird shudder feels like a miss I also have 70k miles .. can't figure it out yet but will try an additive in the morning and run it a bit more it has been sitting for quite a while
I have not done this in my vsport yet. I'm at 37,000 at the moment so it will be soon. Thanks for the video so I don't waste time doing unnecessary things.
Great video and presentation, Danial. Well done!
Thanks, changed mine second time at 82k. Haven’t swapped coils yet and seems fine. Took about 90 minutes. They were pretty fouled with only about 35k miles. Seems changing around 25k could be beneficial as this engine runs them hard.
Who knew when making this you'd become the expert you are in 2021! 👏
Haha. Just wanted to help people do things on their own! Life takes you strange places.
Good information on coil replacement! Good detail 👍
Great tutorial! It worked like a charm. I was able to knock it out in an hour.
Excellent video. Very clear descriptions. Well Done. Please consider future videos on other V-Sport maintenance. (Power steering, radiator, transmission flush etc.) Keep up the great work.
Thanks for this. I have a 2014 vsport, excellent video very clear and easy to understand.
Thanks dude! 😊 After watching this once I was able to swap out the coils and plugs on my 14 V Sport without issue
Excellent video, clearly describes what to look for and the process. If I was close to where you instruct, I'd look for you to do my next BFR. A couple of small points of preference on my side: I always take out/replace the plugs one at a time to minimize time with the hole into the cylinder open and minimize the exposure for something to drop in. Also, there are wire feeler gages as opposed to the "coin" version. The wire types are less sensitive to misalignment when sticking the flat gapper or feeler gages into the plug.
Thanks Marshall!
@@JetFuelOnly I used your provided link and ran into an issue. The denso coil 673-7300 has been discontinued. The replacement part is supposed to be 673-7303. Have you used these yet? Any thoughts or advice? Thank you for all of your videos!
Thank you for the update. No I’m still running on the originals. I’d say an updated part is fine though. Don’t worry about it they probably made an improvement.
@@JetFuelOnly I put them in, along with new plugs and the engine quit misfiring. Even when heavy acceleration and boost. Thank you! Problem solved.
Hell yah brotha, IMPRRSSIVE
Thanks again I followed instructions and installed the new plugs into my car and it’s running smooth as ever no Error codes. Thanks again!
It’s an awesome feeling when it runs right!
Just got quoted $1400 to change the plugs. 6 hours labor to take the manifold off and on. Found your video and am so happy.
I did my track day last Oct at PIR outside Seattle. Best day ever. Tell about brakes. The original pads were Stellar. I have tried two "upgrades' and both were lousy by comparison.
Also, have you done he Trifecta tune?
Really? I hated my brakes. Check my track day video. Yes Trifecta, also see my latest vid! Thanks for watching glad I saved you some cash!
Justin schmidty is who you want to tune your car
great teaching!
Thank you very much. Great video..
Just finished up I am grateful for this how to . Only oart that I struggled with is the falling of the new plugs and that’s just inexperience . Thanks brother I highly recommend next I just need a blow off valve video lol 😂 I’ve seen some but they’re shit
I meant gapping
Great video
Very nice and informative video. Sounds like this maybe the fix to my issue. At freeway speeds when I accelerate to pass another car I hear a backfire/pop sound. Sometimes 2,3,or 4 in a row. The issue happens occasionally and of course the dealer can't duplicate it.
Albert exact issues I had. If you want to go cheap, replace your plugs. If that doesn’t work you can do the coils. However, I suggest you bite the bullet and replace everything at once.
Thanks Danial. I was hoping to get this covered under warranty but they can't duplicate it. I may have to bite the bullet and just pay for the parts and do it myself. I appreciate the help and support.
I say ask to take them for a ride to demonstrate. Seems like that’s what I have to do for everything.
Great presentation. Excellent stuff. Can you also go over how to clean bleached headlights sometime? Thanks
Thanks, I've thought about that. Maybe next time I do one, but there are tons of tutorials and I suggest you check out the channel Project Farm where he helps you see which headlight restoration kit is the best.
No anti seize on the plugs?
Great video, I just did mine this morning with your walk through as a guide
I prefer not to use anti-seize
Excellent video sir. I’m a old school gear head from the mid 1970’s. My first car was a 1972 GTO big block 400. I learned a lot about mechanics from that car because I broke it many times from drag racing. You are right about most cars nowadays are pretty much the same but each one is still a little different. So whenever I plan to work on a car and I don’t know where to start. I always do a search to see how to do the procedure so I don’t have to figure it out. I appreciate people like you who take the time to make videos to help others. I probably need to replace at least the plugs. I’m getting a slight back fire at full throttle. I also have the Trifecta tune to install. So I guess I will wait to change the plugs and maybe the coils. I’m not privy in how much miles you have on your Cadi but what made you change the coils? Was it just for good measure.
Thanks for watching! Around 50k miles. Misfires at partial throttle with boost.
Your welcome. I have about the same mileage on my 2016 VSport Thank you again.
Phenomena video!! Just bought a 2014 CTS-Vsport with 96k miles. Gonna do this and replace coil packs and spark plugs. Can you make a video on replacing transmission fluid and filter? And other key preventive maintenance items? Also, I will use your links to male my purchases for these tools I need :) but you didn’t put a link to every tool you used
Thanks for your support! I skipped trans fluid change because this specific transmission has a bit of a different procedure. It’s not straight forward like most. Go to the dealer but bring your own AISIN ATF 1 LV. The dealer will charge $30-40/qt. Don’t let them rip you off. www.pentosin.net/specsheets/Transmission%20Fluid_ATF%201LV_2017_COLOR.pdf?fbclid=IwAR2X8W4ZoT-uIkAYGRFHqa01RMmQvK6WAMRDqYHkKBuxB5osbrw8WXpC8YM
@@JetFuelOnly thank you for the link!
Thanks for the well done video. I was wondering about this job on my 6M ATS-V with 57,000miles. No codes but the car bucks occasionally with light loads between 1000 and 1500 RPM. Any idea what the next range colder plug is? I'm thinking about getting the car tuned.
GusMahn thank you. Just run whatever your tuner recommends. I’m not sure what everyone has been sticking to with the ATS-V.
Oh yessss
That’s what I said!
Curious how long this actually took you? I know I'm slow but it took me almost 2 hours. No power tools cause I just like to be more gentle around the engine. The lines that needed to be moved around seemed more stubborn than you made it look. Either I suck or you have magic powers. I'm guessing option 1.
First time fan take that long, but after doing it once it only takes 45 min to do again.
BTW, if you are boosting 18 psi (give or take) it is better to err on the side of too narrow a gap than too wide. I went with .025 on the 2016 LF3/LF4 plugs (AC Delco 4# 41-147 -- a.k.a. GM 12662396) and it runs just fine. You are not going to be able to tell the marginal degradation in combustion efficiency (if any). It will be able to tell if the gap is too wide and you end up with misses under boost. The 2014-2015 plugs are garbage (one heat range too hot) and superseeded. If you find them; don't but them. GM dealers only sell the 12662396 in a pack of 4; but many resellers will break it up and sell them piece meal.
Make sure you have GOOD TOOLs! I got stuck when the wrench extension comes off too easily from the spark socket. I can't fish the socket out of the spark plug tube because the extension keeps coming off the socket when I pull it up. And since I don;t have the engien back together, I cannot drive to go get another extension with a tighter ball detent. LOL!
Dwight Looi get something long with a wad of duct tape to pull up your socket. Then tape your socket to your extension. I should have mentioned that as an idea!
@@JetFuelOnly Ended up getting a ride to go buy another wrench set.
@@JetFuelOnly the old tape your extension trick still do it to this day 😁
Have you tried ruthenium plugs yet? Vs the iridium
I did once! They didn’t last long but I realize now it was the coils not so much the plugs.
How good do those ac delco 41 147
juanito12361 they are great. Pretty much what everyone has been using with success
Do you really need to change the coil packs?
Many owners including myself have changed plugs and it wasn’t enough. However it’s cheap and easy to just swap plugs and if that doesn’t help order some coils and do it again.
@@JetFuelOnly What do you think about running LF4 plugs (12662396) on the LF3 instead of the LF3 plugs (12642791)? There is also the NGK Laser Iridium 94489 ILTR6M9G (heat range 6) which is one heat range cooler, but that is a 5 ohm plug, but I suppose it doesn't matter if you buy the Denso coil packs.
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What I have is a situation where the drive train will "buck" -- more like a clunk-clunk -- at high load between 2000 and 2700 rpm. An easy way to produce the problem is to put it on manual "M" mode, and accelerate through that ban in 8th gear. Boost will reach about 7~9 psi in that rpm band with the throttle wide open. I doubt it is a tranny issue since there would have been no shifting commanded and none was observed. The problem will also go away for a while and come back. You sometimes feel it as power instability at high rpm between 5000 and 6000 at full boost too. No CEL though.
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The car is a 2014 w/60K miles. Boost is 10.5~12.5 psi on "Tour" or "Snow"; 16.5~18.5 psi on "Sport" or "Track" [Trifecta]. Everything on the car is stock except the tires; I hate the run flat PZero Neros so I take the risk and run Pilot Supersports without a spare.
Sounds like the situation that caused misfires for me too, but maybe your description of the feel makes me unsure. If you have Trifecta, use their software to log the car doing it. (I haven’t used it yet do not sure the details.). Then send it over to Trifecta and have them look (unless you can review it with their software). You will be looking for logged misfires. If there are any, start by changing the plugs. Then if the problem isn’t solved, go for coils. I say there’s not enough gain to use a different plug in the car. The AC Delcos will be fine and the 147’s I believe are one step colder than the original 2014 plug. I went through NGK (Iridium) and they didn’t play well but it may have just been bad coils. So now this setup hasn’t hiccuped once and I’m happy.
@@JetFuelOnly Aren't the Delco's 4 ohm plugs?
Dwight Looi yes they are. I could have tried other options but honestly I wanted a one shot to make thing better and all “stock” parts for ignition has been good. But maybe try the LF4 plugs and report back! I tried the NGK LTR71x-11 based on an ATS-V tuner recommendation. They didn’t work out but again my coils were the culprit and I decided not to take my chances with the NGK’s again.
Just had my oil changed at the dealer then I got home and checked the dipstick and no oil was on it. I called the dealer and they used 6 quarts and I had to remind them my car takes 7 quarts
Wow… and this is why I learned to do my own work
@@JetFuelOnly looks like I will have to start doing my own. I’ve tried to tell them this isn’t like any other cts. They’ve never seen one I believe.