Never Carbon Clean Your Car’s Engine


rev up your engines, today I’m going to
explain the truth about carbon cleaning your engine, now as I showed in previous
videos, it really doesn’t matter if the outside of your engine is dirty, but it’s
important that the inside of your engine is clean, so of course you want to change
your oil regularly to keep the engine clean that way, but realize that when
gasoline burns in Earth’s atmosphere inside your engine, that one of the
byproducts is carbon, and carbon can take up space inside your engine, if you get a
lot of carbon buildup inside the combustion chamber, the carbon takes up
space, that space will make the compression ratio go higher, because you
have less space in the same area it’ll make the compression higher compression,
it can lead to pre-ignition your engine clanging when you’re driving around, it’s
not a good thing, now in conventional gasoline engine like this Toyota Matrix,
the fuel injectors are on the intake so when the air gets sucked into the engine,
the fuel injectors spray gasoline with that and they go over the intake valves
as they’re sucked in, and if you know anything about gasoline it’s very good
solvent, it’s a very good cleaner, so you generally don’t get much carbon buildup
on the valves of a conventional engine if you use good gasoline and change your
oil regularly, but if you have one of these modern GDI gasoline direct
injection systems, an older Volkswagen with one, they’re notorious for carboning
up the engine, because the GDI injectors are
directly spraying fuel into the block, they don’t spray it over the intake
valves, and with all this anti-pollution equipment, the PCV system can take oil
deposits and stuff out of the engine and burns it, but since it’s no longer mixed
with gasoline when it goes over the intake, it can build up carbon on the
intake system, I guess you could say they should have seen it coming when you’re
talking about the Volkswagen engineers, but alas they didn’t see it coming
I’ve seen Volkswagen engines that were so carboned up that you had to take the
intake off and you had to get a sandblasting machine and instead of
putting sand in it, you would put walnut shells because
they’re softer, and you would actually have to bless the carbon off the inside
of the engine, now some of the really modern engines that have GDI, like some
of the Toyotas, they actually have a GDI system and then they also have the
regular fuel system on the intake system and the computer alternates back and
forth, so the regular injectors on the intake spray gasoline over the intake
valves to help clean them, and those engine hey don’t have a problem with
them carboning up, as long as you use good gasoline and change the oil
regularly, I see a lot of people are trying to sell carbon cleaning to their
customers, they went out they bought a machine, they want to pay for the machine
and make a profit, so they try to tell everybody, Oh your engine needs carbon
cleaning, we got a carbon clean your engine, and many times that’s not the
case, they don’t need carbon cleaning, now if
you want to see if your engine needs carbon cleaning, you can use one of these
borescopes and look inside your engine, I like this one cuz it’s a standalone unit
but I’ve even bought 14 dollar ones on eBay that hookup to either your laptop
or your phone and they work perfectly fine
too, so they don’t cause much anymore we’ll just take off the beauty cover,
and take off this ignition coil, out it comes, and remove the spark plug, then we
get the scope and look inside, and as we can see inside here, this thing is pretty
clean there’s no clumps of carbon lying around, which doesn’t surprise me at all
in this matrix engine, hey we don’t drive drive it that much, I change the oil every
3,000 miles and use a high quality synthetic oil and
use good gasoline, and both my wife and I are pretty fast driver so we keep the
engine revved up which helps clean it out yeah engines can carbon up if you don’t go
over 30 miles an hour, that’s where the supposed myth of the Italian tune up
actually does work quite well in cars that are driven too slow, the Italian
tune up being the slang for, getting on a highway driving your car real fast, my wife
used to have a camry station wagon and she drove it three miles a day back
and forth to work in city traffic, one time we took it to San
Antonio which takes about four hours to drive and the speed limit
someof the way was 75-80 miles an hour, and when
we got back boy that thing ran even better, it ran okay before but it idled
better smoother had more acceleration cuz that help clean the carbon out of
the engine from it going too slow all the time, but let’s say you looked inside
you saw a whole bunch of carbon and you need to clean your engine out, maybe you
bought a used car, maybe it goes too slow, there are lots of carbon cleaning
systems out there, but only a few of them are actually safe, now one is using water
what’s water do when it gets really hot it turns to steam, steam cleaning can clean
things really well, now it actually can work but it has one main disadvantage, if
your tempted to do it yourself by spraying it in or just pouring it in the
engine, you get too much water in you can hide or lock the engine and bend the
Pistons and do all kinds of damage, now professional mechanics have water
cleaning machines takes about 40 minutes to do, you pay the mechanic to do it he
has a machine that’s setup for that but it doesn’t do any damage it’s a
relatively complicated procedure it’s not just sitting there guessing
spraying or pouring water in the intake back in World War 2 some
fighter planes they had a system that if they were being attacked and they had to
try to get away as fast as possible, they could actually inject coolant of the
engine right into the engine, because not only does it clean but of course it
gives a boost of power hydrogen h2o oxygen, you get more power that way, it’s
not something you’re going to do all the time sometimes the engines would blow up, but
I guess if someone’s behind you with 50 caliber machine guns blast away, you
really don’t think about damaging the engine that much
the thing that seems to do the best cleaning that
I tried out is ats chemical one, the 3c induction cleaner, it hooks up to the
induction and what it does is there’s a microprocessor and it has time to
release of chemicals that they’ve created to clean all the different parts and do
it correctly without damaging the engine now I remember a
while back when Ford came out with their GDIs and they were having carboning up problems,
Ford put out a note that said, do not use these carbon cleaning
chemicals, because if you do chunks might come off and if you have a turbocharger
it can break the turbocharger, if you have big enough chunks it could clog up the
catalytic converter, they were saying not to use these cleaners, but this system
works differently, it took these guys years to figure this out, out of Albuquerque New
Mexico, I guess there’s nothing else to do in Albuquerque, so you might as well
invent something, modern fuels and additives and oils and their additives, so
having a new system with special chemicals run by a microprocessor it
only makes sense to me, so as far as I’m concerned the ats cleaner seems to do
the best job of any of them out there but as I said before, you have to decide
hey do you really need your engine carbon cleaned in the first place, of
course you can test it like I showed with the borescope, if you got an older
Volkswagen with the older GDI system, I definitely would advise having that done
every once in a while because they have a problem with building up, but if you
have a normal non GDI engine and you drive at normal highway speeds a lot, you
probably don’t need any cleaning, but if you drive like a turtle or let’s say you
just bought a used car from an estate from an old person that hardly drove at
all, and maybe it has 15,000 miles and it’s 18 years old, probably be a good
idea to have some carbon cleaning done to that, but don’t be misled by the promises
of your cars going to run better, it’s going to have more performance, it’s
going to get better gas mileage, if your car runs perfectly fine now, you really don’t
need a carbon cleaned, because modern gasoline configuration they keep
perfecting it, it burns much better than gasoline when I was a kid, when my
grandfather was a young mechanic those Model T Fords would carbon up all
the time, practically every winter you’d have to tear the engine apart, clean the
carbon off the valves and pistons and put it back together again, those days
are long gone, and since the fuel injector systems are run by computers as
as is the ignition modern cars are much more efficient,
you’re not gonna have the build-up of carbon as much because of that reason,
but whatever you do, don’t just get a jug of water and start pouring it down the
throttle in the engine, you can just and engine doing that I’ve seen that
happen, and please don’t go to one of those car washes and use one of their
wands that has the high-pressure steam and do it, totally unregulated and you’ll
probably destroy your engine if you start spraying that inside, so now you know
the truth about carbon cleaning your engine, and realize for most people most
of the time, it’s an unnecessary process the car just does need, because
unfortunately carbon cleaning that’s become like some of the snake oil
products where people say, add this to your engine oil then it’ll run better
and rebuild your engine while you drive it’s all a bunch of nonsense too, the
additives in oil are fine, the additives in modern gasoline are also fine, for
normal driving you don’t have to mess around with carbon cleaning, but if you
are a worrywart hey pull out a spark plug or two, look inside with a borescope,
if it’s clean inside ha peace of mind knowing yeah you don’t have to do
anything, so if you never want to miss another one of my new car repair videos,
remember to ring that Bell

100 Comments

  1. Scotty Kilmer April 26, 2019 at 3:25 pm

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  2. zt October 2, 2019 at 3:16 pm

    I'd pay to have this guy at my party

  3. manstersr October 2, 2019 at 5:12 pm

    I have a motorcycle that is a high speed bike so I really don't get much opportunity to open it up, it does 90 mph in first gear so it would gunk up the intake ports, valves and throttle bodies to the point that I could barely turn the throttle. So after using intake cleaner a few times which I didn't like because I knew it was just washing down past the piston rings and going into the oil. I started using Seafoam additive in the gas every time I fill it and it has cured that problem. I swear by that stuff.

  4. humbughumbughumbug October 2, 2019 at 7:09 pm

    What happened to the background at 8:48? It has a weird noise too… is the camera on a motorized mount?

  5. COY073 October 2, 2019 at 9:48 pm

    Italian tune up

  6. VLL October 3, 2019 at 5:44 am

    You should talk about diesel engines also. !!!

  7. MR Muskey October 3, 2019 at 2:52 pm

    I have a 2.7 Turbo in my 2106 Lincoln MKX. I over service, but I am concerned about Carbon build up. Thanks for the info Scotty!

  8. manstersr October 3, 2019 at 3:42 pm

    The part about his wife's Camry reminds me of the old Bill Cosby album 200 mph, where the mechanic told Bill he needed to take his Ferrari out on the expressway and "blow the gunk out" and when Bill did that a cop pulled him over immediately and didn't believe him when he told the cop he was just blowing the gunk out. ;0 Like Scotty says about the newer fuels burning cleaner you have to remember Bill Cosby put that album out in the 60's.

  9. Agent9 October 3, 2019 at 6:58 pm

    My car doesn’t have an accelerator, only an on off pedal.

  10. Craig Gorum October 3, 2019 at 11:22 pm

    I'm from albuquerque. Theres nothing to do so I watch your videos 😭

  11. Doug0101 October 4, 2019 at 12:54 am

    Is Sea Foam bad?

  12. Glenn McKee October 5, 2019 at 5:15 pm

    Scream! Gr8 personality and intelligence 😀☘️🇺🇸

  13. Greg Bacon October 6, 2019 at 2:31 pm

    Scotty, what injector cleaner do you recommend? And, how often should it be used?

  14. koo jaba October 8, 2019 at 2:33 am

    Don't Details Your car because its will dirty with in 5 minutes after you drive it on the street ? , I do what i want Scotty. You cannot stop me.

  15. Tuned GTI October 8, 2019 at 7:32 pm

    I own one of this direct injection VW's. I ended up installing a multipoint injection system so i have direct injection and direct port injection a total of 8 injectors for the 4 cylinders.

  16. J F October 10, 2019 at 5:00 am

    As for gdi engines, how are the Kias?

  17. Norm October 10, 2019 at 11:01 pm

    My buddy bought an 86 MR2 from some old people with 60K miles onit and they said they never revved it above 3K…..he liked to turn it up to 7K….he broke 3 piston ring lands within 2 weeks!!

  18. Jesse Castellanos October 12, 2019 at 4:44 am

    Scotty, I'm always told that my 2004 Honda Accord and 2007 need this cleaning by my mechanic?

  19. J.A.M October 12, 2019 at 2:22 pm

    LoL… goes from saying “Don’t!” … then says a 50% of drivers in the US prob should… than goes on to promote a specific type of carbon cleaning
    🤣🤣🤣🤣🤣

  20. J.A.M October 12, 2019 at 2:24 pm

    “For most people, most of the time”… LoL… I’d love to hear his definition of “most”

  21. George Lackey October 12, 2019 at 9:32 pm

    Just use water and Bon Ami cleaner! We call it a Bon Ami coctail! Cleans everything out and also re=seats the valves and rings!

  22. Mcx J Baby October 12, 2019 at 10:18 pm

    Good

  23. Mcx J Baby October 12, 2019 at 10:19 pm

    I can use for my motocycle?

  24. Ryan Emery October 14, 2019 at 2:00 am

    Scotty (or anyone else who wants to answer) what is your advice for getting rid of carbon on a GM LEA I-4 engine?

  25. jester26uk October 14, 2019 at 8:52 am

    what about diesel?????

  26. Cyn Hicks October 15, 2019 at 1:20 am

    So, idling builds carbon faster? I'm speechless.

  27. Drfishstick October 15, 2019 at 3:01 am

    I should have no carbon in my 17 cruze…I drive it like it's a camaro. but I'm worried about LSPI blowing the piston when the warranty ends

  28. Anthony Pegues October 15, 2019 at 1:39 pm

    Dude You Just Ramble On and On and confuse the crap out of people plus some of the stuff you say is just plain wrong.

  29. MrFOTM October 15, 2019 at 6:00 pm

    Omg, ADHD much?

  30. GreenMachine October 15, 2019 at 9:13 pm

    Hi Scotty. A quick question I found a mechanic that's willing to rebuild my transmission on my 2000 Honda Accord SE for $800 instead of replacing at at a shop for $4,700 what should I do and it is my daily driver.

  31. MrClassiccarenthusia October 16, 2019 at 6:37 am

    I have that laptop! Clevo M570TU.. Cost a fortune back in the day..

  32. Doug Robinson October 16, 2019 at 5:56 pm

    To check for carbon buildup on a GDI, you should pull the throttle body and check the intake valves and ports. The heat of combustion will help keep the pistons clean. Due to the airflow through the ports, there will be much more carbon there. I've seen some truly horrendous carbon deposits on valve stems and ports. The plugs and piston crowns looked fine. GDI engines suck, unless you have secondary injectors in the ports. Good for him mentioning that.

  33. Thejosher 1 October 16, 2019 at 9:14 pm

    As a mechanic I get asked about this a lot. My answer to everyone is the same. Fill up with premium chevron with techron and drive it like you stole it. One or two tanks of that gas cleans just about everything… Except vw gdi intake valves

  34. Saxman t October 16, 2019 at 11:17 pm

    What is it with Americans and their constant paranoia about engine oil changes. Modern cars in the rest of the world are designed for 16K – 20K miles oil changes.

  35. Aaron Sawgle October 17, 2019 at 12:39 am

    I want an entire show about the cat.

  36. Debraval Reyes October 17, 2019 at 2:24 am

    How you use good gasoline when I just watched a video of you saying all gas in America is the same. ?

  37. thegreatwhitenorth October 17, 2019 at 3:43 pm

    The best way to decarbonize your engine is to use…. WATER

    Yes.. You read that right

    It turns into steam and steam cleans the inside of your engine..
    Just like when you have a bad headgasket.. The cylinder with the leak is always sparkly clean because it burns the water in the coolant, turning it to steam.. Evendently, cleaning your engine..

    Thats why they say gas cleans as you drive.. Cause of all the water thats in it..
    Which is also why the car infront of you looks like the muffler has a garden hose in it everytime they step on the gas..

    Old school trick they will never teach in school

  38. Jon Hutchens October 18, 2019 at 10:47 pm

    We used to call it a West main Street tune up.

  39. ComputerHead October 19, 2019 at 3:51 pm

    When I was a gearhead (before I became ComputerHead) I used to own the fastest car in town. It was a small town (8,000 residents) but there were a lot of gearheads. I had a stock 1968 RoadRunner with a 383 Magnum (thats a 383 with 440 heads). It was particularly fast, but did a bunch of research and found that a dense fuel charge gave greater performance. I rerouted my winshield washers to jets I installed in the air filter cover. Right before the start, I would sit on the line, rev the engine to about 3000 RPM and punch the washer button. It would cool the engine to the point that smal amounts of frost would form on the outside of the stock intake manifold. When the time came, it was like a damned rocket sled. But, all bragging rights aside, I let a girlfriend of mine drive the car. …right into a bridge abuttment. RoadRunners are great cars but they are not good bulldozers. All that being said, to replace it, I bought a 1969 RoadRunner that had a really junky engine. Someone had really tortured that thing. I ran it for a few years and then realized: Hey! I've got a good '68 engine. I rebuild it and use it in my engine-crappy, not-wrecked '69. Low and behold, when I pulled the heads off the '68, I was almost blinded by the shine. I had some of my gearhead friends over to look at it. The pistons and heads looked like I had sandblasted them clean. I mean, it was totally unbelievable. The "Water Injection" system made everything like that brand freaking new! The valves, the heads, the pistons, even the insides of the intake were ask clean as if it had just been driven from the factory the day before. Forget seafoam! I was told this by a mechanic, long dead: You can clean your own carbon out. Dribble water in the intake SLOWLY until the engine dies. Leave it set overnight. The next morning, start it up and as soon as you get good oil pressure, give it an abbreviated "Italian Tune Up". You'll see the pieces of red hot carbon flying behind you like sparks off a campfire. Or just use Water Injection. Use common sense. Don't push the envelope.

  40. Raabert Ellis October 20, 2019 at 2:48 am

    Opinion on 2.7 liter dodge intrepid? I have over 300,000 miles on mine 🙂

  41. Anonymous RC Productions October 20, 2019 at 3:44 am

    What about the more modern Hyundai/Kia's do they have the tendency to have carbon build up deposits? I'm looking to purchase an 2019 Hyundai Accent Limited with the optional Beige interior after I receive my Drivers License.

  42. Rich Delaney October 20, 2019 at 7:15 am

    But if you're from New Mexico…

    (Shows picture of people cooking up meth on Breaking Bad)

  43. oak 1971 KD9NXQ October 20, 2019 at 10:22 pm

    How to talk in a complete circle, by Scotty Kilmer.

  44. Rich Heller October 21, 2019 at 1:00 am

    Never use water..everyone knows a can of beer is the proper way

  45. ENG.Khalid Al October 21, 2019 at 2:25 am

    CRC has left the chat

  46. Mike L October 21, 2019 at 7:02 pm

    water methanol injection, what is used in the lightening fighter plane is actually quite safe and very beneficial when controlled properly, old systems back then couldn't really manage the induction quire right. The process doesn't quite work the way many people think, by splitting the H20 up and burning it some how, its a bit more complicated. Essentially water takes a lot of energy to go from a liquid to a vapor. By adding it to the fuel air mixture you can cool the intake air (increasing air density), while exposed to combustion temperatures and normal operating heat in the combustion chamber the water changes state, and increases in volume by 1600% at 200 deg C. This effectively increases the thermal EFF of the Otto cycle, by scavenging more waste heat that would normally be blown out the exhaust. It also reduces hot spots in the combustion chamber reducing the tendency for lower octane gas to "knock" or making higher octane gas even better. Rotary guys like it because it helps us protect those delicate corner seal, side seal, and apex seal springs from getting to hot and loosing their spring steel heat treat when running the engine at high RPM. Cleaning the engine is a happy side effect 🙂

  47. raymond ledoux October 21, 2019 at 8:11 pm

    How about walnut blasting?

  48. Carpe Diem October 22, 2019 at 1:46 am

    This guy is like an old jack sparrow of the shady mechanics

  49. Christopher VanZetta October 22, 2019 at 4:31 am

    This coming from a guy who recommended using products in the past to clean your injectors….

  50. E Abuhasbu October 22, 2019 at 7:07 pm

    Back at it with the old scumbag

  51. Barry Brennan October 22, 2019 at 9:23 pm

    Saul Goodman's dad

  52. Ronald Schmal October 23, 2019 at 7:32 am

    When I was younger, I used to always clean the engine compartment at the car wash. It never dawned on me that it wasn't the brightest thing I could be doing. Awwww, if only your YouTube channel existed back then.

  53. joe white October 23, 2019 at 4:54 pm

    Just run some Seafoam through the gas tank and intake every 100k

  54. DIPANKAR DAS October 23, 2019 at 9:46 pm

    This man's knowledge surprises me, every time I get some new information.

  55. mines2680 October 24, 2019 at 3:17 am

    " they didn't see it coming" ( shows a deer in headlights)

  56. Griffon 327 October 24, 2019 at 1:21 pm

    You forgot to mention people who simply re route the windshield wipe washer line to go into the intake prior to the throttle body and "spray" washer fluid into the air stream at the push of a button 🙂 while driving down the highway

  57. Wyatt Kuhns October 24, 2019 at 3:30 pm

    I'm going to put water in my intake now

  58. CaliRider October 25, 2019 at 5:06 am

    Seafoam?

  59. Ahmad Al-Ajeel October 25, 2019 at 6:17 am

    My car is an audi 5 cylinder turbo with both direct and port injection, but i always fill it with 98 octane gas and always use fully synthetic oil. Will that cause damage or increase carbon build up? Will i need fuel injection cleaners or any cleaners?

  60. chase ames October 25, 2019 at 6:42 pm

    ill be replacing my head gasket on my 03 tj 6-cylinder with 140k miles. Would it be a good idea to clean the carbon off (if there is a lot of build up) since ill already have the cylinder head off ? Some wd40, some scotch-bright with a light hand….or would that just be a waste of time?

  61. SegaBudman9 October 26, 2019 at 3:40 pm

    Just don’t buy gdi

  62. Ollie Sticksman October 27, 2019 at 9:28 pm

    You know when you meet that guy in a bar who's tipsy and loud and busting for a piss?… Lol yeah. I mean that respectfully though

  63. Jorizam Hi johari October 28, 2019 at 12:04 am

    Respect this man, he always helps you since you got problems with your car, now I can repair my car by myself thank you scotty

  64. rockyo59 October 28, 2019 at 3:51 pm

    I love your videos but thank god for being able to turn up the playback speed to 1.75.

  65. chilly cheeze October 28, 2019 at 9:53 pm

    Does this dude have eyes?

  66. Evan Heinz October 28, 2019 at 10:39 pm

    What do you mean by good gasoline ? Iv always read that 87 is fine for standard engines.

  67. BOODRO WEBB October 28, 2019 at 11:47 pm

    We call the "Italian Tune-up" blowin' the cobwebs out. (Kansas).

  68. Bryon Sparkman October 29, 2019 at 1:56 pm

    CRC cleaner for a 2016 2.7 EcoBoost f150 should I or no

  69. Viliam Beňa October 29, 2019 at 3:33 pm

    I'm reving up my carbon and blowing up my engine since I've saw this video , thanks Scotty

  70. boost331 October 29, 2019 at 10:35 pm

    I am a firm believer in driving your car hard. I am almost 40 now but drive my cars the same as i did when i was 16. Never grew up i guess. But my point being, i never have mechanical issues. I only drive manual transmissions which helps too. Most modern cars the first major issue will always be the trans.

  71. Tri-Cities Washington Community Watch October 30, 2019 at 4:54 am

    Thanks. Have a 2016 civic. 45000. Dealer ship said I needed it done for 180.00. I wasn’t sure. Now I know I’m not going to waste the money.

  72. William Arrington October 30, 2019 at 7:34 pm

    Most people that tune their cars use walnut blasting to get rid of it. Your not blowing the carbon off a n54/55. When your tune only allows 93 oct and your pushing 450whp you might want to make sure its right

  73. Spencer Yancey October 31, 2019 at 12:56 am

    Very useful video.

  74. Mike Graf October 31, 2019 at 3:01 am

    Mazda SkyActives engines (CX-5, Mazda3 for ex) are Direct Injection too. Do they carbon up?

  75. onpsxmember October 31, 2019 at 1:11 pm

    No wonder you got all the build up with the shitty fuel and the slow driving.

    Every basic fuel in central europe is at least 91 ROZ.

    Why are the those average octane fuels with 87 AON still sold?

  76. shaunmark1 October 31, 2019 at 4:43 pm

    DI needs valve cleaning, anyone have advice on that? Other than taking the top end apart.

  77. Peter W November 1, 2019 at 9:57 am

    What a load of crap. parts true parts wrong hustled together with at the end no definite message. Contradicting pictures, explanations etcetera.

  78. bru th November 2, 2019 at 3:18 am

    Scotty is an oil change sloot.

  79. Đorđe M November 2, 2019 at 8:08 pm

    Kralj!

  80. TheBanjoShow November 2, 2019 at 8:36 pm

    3:57 that’s so funny I don’t know why

  81. John Becich November 3, 2019 at 2:06 pm

    How do you get a bore scope view of the top side of your valves?

  82. jorge calzada November 4, 2019 at 3:30 pm

    Hahaha breaking bad picture …there is nothing to do in new Mexico

  83. Tom Apelt November 4, 2019 at 7:10 pm

    Spinner

  84. navlife 14 November 4, 2019 at 10:39 pm

    I have a Hyundai Veloster with a GDI motor and currently I'm at 214 thousand miles… I've use seafoam roughly eight times in the past 3 years… my carbon problems are non-existent at the moment

  85. HustlersMark November 5, 2019 at 5:35 am

    He's like the Jim Lahey of the car park.

  86. Ultraspontane November 5, 2019 at 2:08 pm

    MARVEL MYSTERY OIL

  87. Jay Remy November 6, 2019 at 11:58 am

    Hey Scotty!
    I just bought a 2014 Chevy Silverado with the 5.3L GDI motor.
    I noticed a slight smell of varnish coming from outside of drivers side door.
    Pulled the oil cap off of the engine and took a wiff….smelled a slight gasoline smell.
    This truck also seams to have a slight (common issue) slow gas fill problem…possibly clogged evap canister.
    The engine has 94k miles and seems like it was well maintained.

    If this was your truck, what would you do to investigate the roots causes of the odor issues.
    Any concerns with the redesigned 5.3L?
    Any advice would be greatly appreciated. Might even inspire a new video for ya😉

  88. thisnametooktolong November 6, 2019 at 12:18 pm

    skip to 4 min, then pay attention…. it's all you need to know

  89. nealongreene15 November 6, 2019 at 8:28 pm

    I enjoy direct injection. It makes me big $$$ when customers need their intake valves walnut blasted!

  90. J Pan November 7, 2019 at 12:36 am

    Do fuel additives like sts fuel injection cleaners really work?

  91. PD12 November 7, 2019 at 2:07 am

    Didn’t even touch on the oil catch can. That will help the gdi engines

  92. ROBERT DAVIS November 7, 2019 at 1:26 pm

    Always nice seeing Scotties Cat making a cameo.

  93. Jacob Corpuz November 7, 2019 at 11:20 pm

    Sir, i have a 2019 nissan navara, is it safe to clean the exhaust pipe with tap water (old school of cleaning) to get rid of carbon deposite. Is it true that driving with low RPM always would increase carbon deposit? What do u recomment sir ? Thanks

  94. Jan Barbosa November 8, 2019 at 2:33 am

    Got a VW Tiguan with GDI engine, Just spent 500 dollars to clean carbon !!!! The mechanic tells me to save my quarters because when I reach the next 55K miles will have to spend it again !!!! Come ON VW !!!! 🙁

  95. penn707 November 8, 2019 at 4:05 am

    I’ve actually been adding carbon to my engine.

  96. Wa Jansen November 9, 2019 at 12:42 pm

    Scottie Where can I find a check engine code list for 1995 nissan
    n

  97. Greg Yancey November 9, 2019 at 6:28 pm

    Scotty, we bought a new 2018 Chevy Equinox 1.5l a year ago and 13k miles now…no problems and my wife loves the car but I am concerned now after finding out the intake valve carboning issues that some GDI engines have. Do you have any information on how this engine does or not does not suffer the problem? It burns no oil between 5k oil changes currently. Thanks

  98. Ben P November 9, 2019 at 8:32 pm

    Is necessary to clean the Direct Injection System regularly for Carbon built up in the valves? How often and What is the best way?

  99. Martin Mcgrogan November 10, 2019 at 12:26 am

    Scotty, you actually have to borescope through the intake manifold to see the back of the intake valves where the carbon causes most of the trouble. If you got lucky and the intake valves were maximally open, only then would you see this through the spark plug holes. Right?

  100. quinnheidenreich1 November 10, 2019 at 12:56 am

    Anyone know where to find an ATS 3C cleaner in Dallas?

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