The thermodynamics of carbon (-vs- steel or most metals) is that carbon has a higher " specific heat" than any metal (clean injectors, pistons, etc). Also carbon is insulating (thermally much less conductive than metals). So keeping the engine clean keeps the engine cooler. Heat intensifies oxidation... so things like piston rings age more rapidly the higher the heat that is retained. So keep the carbon down (regular engine oil changes, more highway driving vs city, keep injectors, piston tops and valves clean using a pea based gas treatment 2 or 3 times a year, etc).
As an owner of a 4GR-FSE engine currently pushing 180k , i can honestly testify that, yes the oil changes, using good fuel and having a long hwy commute does work. You Sir are absolutely correct.
I have a 2010 is250 with 93k and a 20 minute highway commute each way. I was already looking to walnut blast my valves thinking carbon buildup is inevitable. Thanks for the reassurance. Love this channel
@@michaelG2310 there is a chanel called Legit Street cars, he has an episode where he takes a 2007 is250 and performs the intake valve job, its very interesting to watch.
I have been a Honda guy for very long time and just bought my first Toyota. This dual injector setup is one key reason for my switch. Toyota is getting it right and trying to do the right thing :)
Actually it isn't Toyota Technology, Direct Injection was developed by the Germans, and so was the Dual Injection System. As with most Asian brands, they don't "Innovate" they Duplicate. They reverse engineer something someone else made and make it better.
How can anyone not love this guy? AMD - you mentioned that some other manufacturers have figured this direct injection thing out and minimized intake carbon buildup. Can you tell us who besides Toyota does a good job?
Great info. After having been in this business for 34 years, I too say change your oil early and often. Don't buy into 10k mile oil changes on your vehicle. Your vehicle is quite often the second biggest investment in a person's life and needs to be treated as such.
Intake valve carbon is not the only problem with GDI engines. Damaging abrasive soot caused by incomplete atomization and burning of the fuel mixture. Causes carbon build up on oil control rings, and PCV system, air injection systems, etc, and causes excess wear of cylinders and timing chains. Fuel dilution is third problem. This shears the oil viscosity, reduces Film strength, oxidizes the oil. Combine soot, fuel and oxidized oil and you have significantly shortened engine life. All OEMs are struggling with these problems.
For years I've told people to get the vehicle out on the highway or freeway, get it up to the speed limit and hold it there! The more you drive it that way the better it will run and the longer the engine will last! Change the engine oil and oil filter every 3000 to 4000 miles OR every 6 months, WHICHEVER COMES FIRST! those two steps will help increase the engine's life! Toyota's got the right idea with GDI AND Port Fuel Injection. Together they do a great job. Thank you for this video.
My mom just bought a 2018 Camry with 30k miles on it and she almost exclusively does short trips. We will do 5k oil changes with the OEM filter and the occasional 'Italian Tune-Up' thanks to you. My Toyota has 160k and I hope to get another few 100k out of it. I'm following your maintenance schedule. My family and I thank you!
I do my own oil changes my 2019 avalon takes 5.7 quarts of 0w-20 I put 5 1/2 quarts of mobile 1 advanced economy 0w-20 oil 6 ounces of oil is left in the engine after each oil change I get my oem filter from my dealer for $6 with the new drain plug washer gasket. costs me $35 to change my oil every other oil change maybe $40 depending if I need that extra quart for the two oil changes I save $80 a year in oil changes and I don't over tighten the filter housing like I have had troubles getting it off with a breaker bar from mechanics overtightening it past snug where it stops on the housing.
I also purchased a 2018 4cyl SE Camry with 16k miles 2 years ago. I stay on top of the maintenance like no other. Oil changes every 5k miles, transmission fluid change at 30k miles, even though the mechanic said I could wait till 60k. I've added a Magnaflow exhaust and a K&N air filter which gives it added power. And the Italian tuneup does work!
I have a 2020 Honda Ridgeline with 85,000 miles on. Recently I changed the PCV. ( No particular reason ) I just changed and I found the original one was not working 100% correctly. it was hanging up a little. Very easy DIY. The motor seemed to run a little smoother after I changed it
You’re awesome! I watch your videos now almost on a daily basis. The knowledge you impart and your narration is just beyond excellent! I think of you as The Last Great Automotive Technician
Excellent info as always AMD, where we are that high pressure pipe doesn't come cheap so we just tighten it more every time we remove it. I've been explaining the driving part to my customers foe a while now and they never seem to believe so i'm glad your covered it. love the videos as always.
My Dad taught me about the Italian tuneup in the 70’s. We’d take the Chevy Malibu wagon out on the interstate and floor it for a few miles! (With the V-8, you can see the gas gauge going down!)
Great video! My 2018 Highlander has the same engine. Never worried about the carbon build up on the intake valves on this engine, because I seldom hear the noise from the high pressure pump when my foot is not on the gas paddle, such as waiting at the stop lights. That means the intake valves always get sufficient washes from the port injection. Well done Toyota!
In all your reviews you always put down car guys and say don't look at how fast the car can go or sports features But you yourself bought a V8 and you said you wanted a car with power and you bought a car with sports package because you said the way it looks you like it. At the end of the day you are also a car guy. I love you. You do great reviews. Please don't sell out. You are a good guy.
I got a 2010 Prius with 280,000 mi. Still runs like a champ. It gets about 20 or 30 Italian tune-ups per day. I do change the oil every 5,000 though full synthetic.
I believe my 2018 ford f 150 eco boost has both style injectors on it for the same reason of keeping carbon down , because they were having problems with the earlier models, only having direct injection carboning up
Great video and nice to learn of potential problems that might show up as time goes by. We just had our 1st transmission and Coolant service on our 2020 Camry SE. Our local dealership had a sale on the coolant service and we got it done for $50 and since we did the oil and transmission at the same time they gave us an additional 10% off. Our car is sitting at 45k miles and has been flawless so far. They told me Toyota recommends transmission service at 80k and I was like I do not care I do it every 45k miles on my vehicles.
I bought a '22 Corolla SE manual and plan on making it last as long as I can. 8000km/6 month oil changes every time. Every cold start I let the oil circulate until the RPM drops (30-60 seconds) before I move the car at all/load the engine. I try to limit cold starting as much as possible. And almost everytime I drive the car and I can get it up to operating temp, I give it an Italian tune-up to keep everything flowing properly. So far it is a great car and I want to keep it working flawlessly. Thanks for another insightful video.
AMD once again you nail it sir! I own a 2022 Tacoma TRD sport and absolutely love it. I know people complain about the transmission hunting, etc. This video puts my mind at ease. I was advised by my mechanic who is a Certified Toyota master tech to not do a pressurized cleaning of the fuel injectors. He said it would damage the direct injectors. Can you confirm this? Not that i plan on ever doing that anyway. Once again thanks for the awesome video!
I've been down this rabbit hole a bit...and AMD touched on it in another video: use top tier gas only. Top tier gas includes detergents that the others do not. There is published information on the large difference between the two as far as carbon buildup goes. While "The Motor Oil Geek" tribologist does advertise Gumout, which has a higher PEA content than others, I do find that the maker of GM's injector cleaner is no slouch and falls under the same EPA license as that for Chevron's Techron and also Toyota. BG and others are quite expensive and not really going to put a dent in bad carbon buildup as AMD noted it would really require a grinder to remove it, if it exists at all. Top tier gas costs little in comparison to additives.
This is awesome! It's funny because on another channel I watched a GM powertrain engineer claim that their DI engines don't have any carbon issues and carbon isn't really a problem anyway. (GM just uses single injectors unlike Toyota.) That's why I buy Toyotas...they care about their customers and longevity of their products.
I won't touch a GM made vehicle like the plague. Joe Biden and the CEO of GM, a woman that I don't recall her name, were at a publicity stunt promoting GM'S new product line of electric vehicles. Joe Biden said that GM made the most technologically advanced EV products in the world. What we don't know is that Joe Biden and this GM CEO are planning together a bailout scheme. By the way Elon Musk was not invited to this televised EV promotion for Biden's New Green Deal agenda, that all taxpayers will be burden with.
Really nice video. Finally, some video with proper technical content. During the video I understood that some other manufacturers resolved the carbon buildup. Who are they? I was convinced that only Toyota was willing to.
Im glad you’re back tracking on the 2.5 V6 in my 2012 as you had said don’t ever buy one my AWD 250 is awesome and I squirt some cleaner in it every once In a while and it seems to help and you are the only one who ironically speaks ILL of the 2.5 if I have to clean it with what ever it takes I’ll do it , the awd is killer in the snow and there is no perfect car but these are close .
Great video again AMD - I am sharing your knowledge with my 16 yr old. He is particularly adept at doing Italian Tune ups on our 2011 2AR-FE Rav4. So I whipped up the borescope, pulled out the plugs and compared the carbon build up on the piston heads over the course of a few months - and I have to admit the improvement is quite noticeable! His gas mileage isn't as good as mine obviously, but the enine is defintely stellar and you can easily read the stamps on the piston heads. :-)
For everyone that doesn’t know heavy diesel trucks and equipment have their own way of doing an “Italian tuneup” whenever it senses it’s getting plugged up with carbon, when in park the engine will automatically spool up to a higher idle Rpm for several minutes to heat up and burn away any soot that has built up in the exhaust system.
I have a GS350. When I bought it if I went wide open throttle it would blow out I guess dirt / carbon. I do it once in a while and now nothing comes out. I think I blew it all out. I bought it used 3 years ago. It was driven on the highway but I don't think she ever went wide open throttle. It works!
👍👍👍 Ford is even switching to dual port on the 24 Mustang and Ranger I believe. I'll never buy another GDI / DI ONLY engine again - it was AWFUL in the city short and long term.
I actually got rid of my 2016 GMC Sierra 1500 because of all the garbage GM threw at that motor. Along with direct injection it also had a DoD/AFM system that was problematic. I got wise and bought a 2015 4runner. Hands down the best vehicle I've ever owned. It does have variable valve timing but it's 4.0 V6 is tired and true and will long outlast that GM 5.3 in my opinion.
I would agree. I have a 2003 Silverado, much simpler and more reliable than the later models with AFM and other complexities. This is my last ever GM product, for reasons I won't go into. We also have a 2021 RAV4 XSE Hybrid which we love, great mileage, many more creature comforts than the truck. The RAV4 will be our main transportation for years to come. We've been pleased with Toyota quality and reliability since we bought a 2009 Corolla and traded it for the RAV4.
IF you deactivate the DoD system ( and correctly maintain the engine), most GM LS series engines will last as long or longer than any Toyota engine. I just got in a 46 year old car that has what is widely considered to be Fords worst V-8...the 351 Modified Cleveland. The owner was downright religious about maintenance and as a result it has a documented 376,000 miles on it. Its finally getting a rebuilt engine.
Toyota invested a lot in this double injection system after seeing Korean cars attempt direct-only. No one likes hearing 'high pressure fuel pump'. It sounds like something expensive that will break inside 200k miles. On mass produced diesel engines, they've hardly just perfected the HP fuel pump in the last 20 yrs. I'll give Toyota the benefit of the doubt... They can have a complicated system and I'm still going to buy it... Used... In about 10 years
From what you said about frequent short trip driving, perhaps that's one valid reason for getting a small electric car instead of ICE for doing that kind of driving. I don't like electric vehicles but this does seem to be one useful purpose for them.
My 2017 Tacoma is coming up on 170,000 miles on it. I change the oil/filter myself every 5k and unless it is not available, I always put Shell V-Power in it. I've had zero issues with the engine so far. I've changed the plugs, various filters, including the PCV valve. All fluids for transmission, rear diff, transfer case, front diff are all changed as well. The truck has not been back to the dealer for anything other than its initial checkup when new. When the engine is cold, I start it up and let it run until the water temp hits at least 50 degrees before I drive away. and I take it easy until the engine is warmed up. I do this to allow components to warm up and reduce stress on the head gasket and reduce chances of a gasket failure. Truck typically get driven at least 20-25 miles each time it is driven. And it gets an "Italian Tuneup" about every two months. I am going to change the drive belt on it this spring, since the original one is still on the truck and actually still looks fine.
Always learn something new from AMD. What constitutes a "short" trip? Less than 10 minutes? I know most say that 10 mins is the time it generally takes for your oil to get to operating temp
No. 1, since following you, I've changed my oil every 5,000 miles. No. 2, I used Top Tier gas. No. 3, I drive mostly city driving (10.8 miles one way), so once month i hit the highway!
AS you said.. you showing a dual injector system.. so would not expect to see problems since the port injection is cleaning the valves. Down side of direct injection is also the fact it struggles at high revs (above 6k).. so duel injection is clearly best... where management computer can optimise between both systems.
😀 Let's be honest people. Toyota didn't have to do this type of system of adding 6 extra injectors and everything that goes along with them. This is more cost to them. Hats off to Toyota for doing this.
Some manufacturers like Audi, BMW and Ford are notorious for carbon build up. Many car owners installed high quality catch cans to capture these blow up contaminants so they’re not reintroduced back into the combustion chamber. Our shop has installed catch cans from Mishimoto and other high quality manufacturers.
I have a GDI engine in my almost 10 year old car. My owner's manual "requests" that you only use gas from "Top Tier" gas brands, to make sure that the gas has more detergents than other brands. These detergents help keep the injectors clean, to prevent drops of fuel than won't burn, from drifting up to the intake valves. They also "suggest" using a "Techron" injector cleaner, every 3000 miles if you don't use "top tier" gas. I've actually been using both methods. It seems to be working, after 10 years. I noticed that when the engine that is used in my car changed over to GDI, it gained 45 more horsepower, and an extra 2 mpg.
To be honest, in a strictly GDI engine, there is nothing that you can add to the fuel to clean the intake valves. Using an "upper engine cleaner" every service (before changing the oil) should help if done from day zero (I say should, because I don't own a GDI car so I haven't used this method). The upper engine cleaner is added into the manifold via a vacuum line (and so comes into contact with the intake valves). However if you haven't done anything like this is 10 or so years, you would need to use a different method to clean the valves.
@@notsureyou But you can make sure that your injectors are spraying a fine mist, instead of drops of fuel. Dirty fuel injectors can be the bane of modern engines. (even multiport systems) The upper engine cleaner can be used if you see a drop of mpg or a poor idle, or misfire.
@@notsureyou Right. Nothing that goes through the injectors, will clean anything but the injectors. The only thing that will clean valves (once they are carboned up), are solvents that go through the intake manifold. In Toyoda's case, that solvent is gas.
Last year my fuel pump failed but before it did I was getting an extra 60 miles from a full tank. I suppose less pressure but enough to open the injectors
I drive spiritedly even on a short trip. Once I get all the right tools in. I'll be doing a thorough carbon build-up cleaning on the intake valve on my car. Last I did an inspection. I found a lot of carbon build-up on the intake valve on my 2nd gen traverse. Seems the 1st owner only drove short trip mostly and had a lot of carbon build-up on the intake valve.
Direct injection isn't better if you need you valves cleaned. My Accord with 215,000 miles has been problem free. However I never inspected them, but like I said it runs great.
You provide the best Toyota/Lexus information on RUclips by far! We intentionally purchased two 2011 RX350's because they ONLY had port injection. Twelve injectors is profoundly idiotic. I'm surprised you did not mention that the computer switches between the port/direct systems automatically in order to clean the valves. Great work. Thanks!
Best car channel on RUclips, and it aint close! When I bought my '21 Tacoma with the D4S, I actually took it back to the dealership the next day because of a loud "tick", which in older cars would spell disaster. The tech explained to me that this was the direct injection. Almost sounds like a diesel when its operating. I shouldve done my research I suppose, I wouldve been aware.
All of your videos are very well done. Thank you for all of the information. I wish there were more knowledgeable technicians who work to be the best they can be - Thank you
I actually have the new Hyundai Elantra (EU version) because it came with port Injection, but I'm amazed by your videos and dedication. I am wishing for a Toyota sometime in the future when I can afford it, and will have dual injection on their engines(they didn't have it when I was interested in purchasing)
Ah, finally a “believer” eh!? Said it years ago: GDI is tricky, but SOME makers have figured out engine management algorithms to avoid and clean the intake valves. From higher rpms and heat cycles, to valve timing/overlap and spark timing.
I had an Audi Q5 3.2 and had endless problems but especially with fueling. The pump went out, carbon buildup (gdi), burning oil like crazy, and it had less than 120k miles. Never again
This is good to know..only other duel injection review I heard of is Ford's late model 3.5 ecoboost...well, Ford's only switches to port injec when idling, at 100k mi, valves were caked with lots of carbon that requires service...wonder if toyota's system works differently
Back in 2017 when I was looking for a car I was looking for one that wasn't only direct injection. I use to have a 2008 (MK5) VW GTI that I maintained very well (even got compliments about that and yes I changed the oil sooner than the 10k miles interval). Now to be honest I didn't run into carbon build up issues but that is only because the engine decided to eat itself before carbon build would have become an issue. I'm very happy with the 2018 Camry XSE V6. Just wish the paddle shifters were programmed differently (and to a slight degree it had a hatch opening...hmmmm wagon version...oh yeah..lol).
Interesting thing I'd heard before about Toyota's use of direct + port injection: they didn't "primarily" have both to deal with carbon build-up but mainly for better idle (DI tends to idle rougher)--it's just an extra benefit, this intake valve cleaning.
Yes, the port injectors are better at startup due to better mixing of fuel-air. Basically, more time to form a homogeneous mixture from the moment of injection till moment Intake valve opens. Especially useful during cold starts.
It's interesting you mentioned the rougher idle, I noticed a slightly rough idle in every DI vehicle I've been in. From my experience, DI Honda/Acura engines seem to be the worst offenders for rough idles.
You're always going the extra mile by actually showing the valves and that's greatly appreciated
The thermodynamics of carbon (-vs- steel or most metals) is that carbon has a higher " specific heat" than any metal (clean injectors, pistons, etc). Also carbon is insulating (thermally much less conductive than metals). So keeping the engine clean keeps the engine cooler. Heat intensifies oxidation... so things like piston rings age more rapidly the higher the heat that is retained. So keep the carbon down (regular engine oil changes, more highway driving vs city, keep injectors, piston tops and valves clean using a pea based gas treatment 2 or 3 times a year, etc).
@@colty7764 👍
Thanks Ahmed. You're a blessing and a great teacher. Keep up the great content.
@@colty7764have you heard of using high octane to help keep fuel in the oil down. many are claiming success.
As an owner of a 4GR-FSE engine currently pushing 180k , i can honestly testify that, yes the oil changes, using good fuel and having a long hwy commute does work. You Sir are absolutely correct.
I have the 4GR-FSE as well (IS250 6MT) with 199k and I haven't had any issues with carbon buildup
+1 from an owner of 4gr FSE too, with 150k miles 2007 is250 , i need to check valves but for now the engine works fine !
I thought the 4GR Did not have d-4s with port injection. Only direct injection
I have a 2010 is250 with 93k and a 20 minute highway commute each way. I was already looking to walnut blast my valves thinking carbon buildup is inevitable. Thanks for the reassurance. Love this channel
@@michaelG2310 there is a chanel called Legit Street cars, he has an episode where he takes a 2007 is250 and performs the intake valve job, its very interesting to watch.
This man is more than a master mechanic. He is an absolute genius mechanic. A guru.
I have been a Honda guy for very long time and just bought my first Toyota. This dual injector setup is one key reason for my switch. Toyota is getting it right and trying to do the right thing :)
This is the best channel on Toyota technology! Great explanations backed up by real world examples.
Yo this guy, I wish he can talk about other cars other than Tacos 👀
Actually it isn't Toyota Technology, Direct Injection was developed by the Germans, and so was the Dual Injection System. As with most Asian brands, they don't "Innovate" they Duplicate. They reverse engineer something someone else made and make it better.
I'm not even a Toyota auto mechanic but somehow I always learn valuable tips from the Car Nut.
How can anyone not love this guy? AMD - you mentioned that some other manufacturers have figured this direct injection thing out and minimized intake carbon buildup. Can you tell us who besides Toyota does a good job?
so glad this system works. ive put so much faith in this system over the years, happy to see more sound engineering from toyota 😇🙏🏻
Jjjhh2edbb
Great info. After having been in this business for 34 years, I too say change your oil early and often. Don't buy into 10k mile oil changes on your vehicle. Your vehicle is quite often the second biggest investment in a person's life and needs to be treated as such.
Intake valve carbon is not the only problem with GDI engines. Damaging abrasive soot caused by incomplete atomization and burning of the fuel mixture. Causes carbon build up on oil control rings, and PCV system, air injection systems, etc, and causes excess wear of cylinders and timing chains. Fuel dilution is third problem. This shears the oil viscosity, reduces Film strength, oxidizes the oil. Combine soot, fuel and oxidized oil and you have significantly shortened engine life. All OEMs are struggling with these problems.
For years I've told people to get the vehicle out on the highway or freeway, get it up to the speed limit and hold it there! The more you drive it that way the better it will run and the longer the engine will last!
Change the engine oil and oil filter every 3000 to 4000 miles OR every 6 months, WHICHEVER COMES FIRST!
those two steps will help increase the engine's life!
Toyota's got the right idea with GDI AND Port Fuel Injection. Together they do a great job.
Thank you for this video.
My mom just bought a 2018 Camry with 30k miles on it and she almost exclusively does short trips. We will do 5k oil changes with the OEM filter and the occasional 'Italian Tune-Up' thanks to you.
My Toyota has 160k and I hope to get another few 100k out of it. I'm following your maintenance schedule.
My family and I thank you!
I do my own oil changes my 2019 avalon takes 5.7 quarts of 0w-20 I put 5 1/2 quarts of mobile 1 advanced economy 0w-20 oil 6 ounces of oil is left in the engine after each oil change I get my oem filter from my dealer for $6 with the new drain plug washer gasket. costs me $35 to change my oil every other oil change maybe $40 depending if I need that extra quart for the two oil changes I save $80 a year in oil changes and I don't over tighten the filter housing like I have had troubles getting it off with a breaker bar from mechanics overtightening it past snug where it stops on the housing.
Do 3K like me
@@andersonrodriguez8258 THATS A WASTE OF MONEY
Me too brother
I also purchased a 2018 4cyl SE Camry with 16k miles 2 years ago.
I stay on top of the maintenance like no other. Oil changes every 5k miles, transmission fluid change at 30k miles, even though the mechanic said I could wait till 60k. I've added a Magnaflow exhaust and a K&N air filter which gives it added power.
And the Italian tuneup does work!
Few mechanics truly know theory of operation on modern vehicles. CCN knows his stuff 😊
My 22 Tacoma has this system and it's totally new to me. I'm glad to see it works so well!
I have a 2020 Honda Ridgeline with 85,000 miles on. Recently I changed the PCV. ( No particular reason ) I just changed and I found the original one was not working 100% correctly. it was hanging up a little. Very easy DIY. The motor seemed to run a little smoother after I changed it
This has become one of my favourite channels.
This was a great topic to cover , I’ve been curious to see intake tract on one of these after a few miles .
You’re awesome! I watch your videos now almost on a daily basis. The knowledge you impart and your narration is just beyond excellent! I think of you as The Last Great Automotive Technician
Brother for me this man is the best, GOD BLESS HIM AND HIS FAMILY
Excellent info as always AMD, where we are that high pressure pipe doesn't come cheap so we just tighten it more every time we remove it. I've been explaining the driving part to my customers foe a while now and they never seem to believe so i'm glad your covered it. love the videos as always.
My Dad taught me about the Italian tuneup in the 70’s. We’d take the Chevy Malibu wagon out on the interstate and floor it for a few miles! (With the V-8, you can see the gas gauge going down!)
It was called blowing out the cobbs in my day.
Italian tune-up is my favorite tune-up! :)
Did your wagon have the 350 V8?
@@rightlanehog3151 I think so!! I was just a kid
@@coloradoboo1071 I was just a kid in the 70s and I know for a fact our 1973 Caprice Estate wagon had a 400 V8 with 2 barrel carburetor 😉
Great video! My 2018 Highlander has the same engine. Never worried about the carbon build up on the intake valves on this engine, because I seldom hear the noise from the high pressure pump when my foot is not on the gas paddle, such as waiting at the stop lights. That means the intake valves always get sufficient washes from the port injection. Well done Toyota!
This is exactly the video I was hoping to see. Thank you so much for taking the time to put this together!
In all your reviews you always put down car guys and say don't look at how fast the car can go or sports features But you yourself bought a V8 and you said you wanted a car with power and you bought a car with sports package because you said the way it looks you like it. At the end of the day you are also a car guy. I love you. You do great reviews. Please don't sell out. You are a good guy.
I currently own eight Toyota vehicles and enjoy your videos and the information. Thank you!
I got a 2010 Prius with 280,000 mi. Still runs like a champ. It gets about 20 or 30 Italian tune-ups per day. I do change the oil every 5,000 though full synthetic.
Hey, what is 20 or 30 Italian tune-ups per day meaning?
😂 the Prius is being driven hard
I believe my 2018 ford f 150 eco boost has both style injectors on it for the same reason of keeping carbon down , because they were having problems with the earlier models, only having direct injection carboning up
What a perfect video. Answering the question we were all wondering about.
Great video and nice to learn of potential problems that might show up as time goes by. We just had our 1st transmission and Coolant service on our 2020 Camry SE. Our local dealership had a sale on the coolant service and we got it done for $50 and since we did the oil and transmission at the same time they gave us an additional 10% off. Our car is sitting at 45k miles and has been flawless so far. They told me Toyota recommends transmission service at 80k and I was like I do not care I do it every 45k miles on my vehicles.
This is exactly what I waited to watch. Thank you a lot.
No need to get a speeding ticket doing an 'Italian tuneup", just downshift to keep the rpms up higher. That is the key.
Good radar detector + Waze and enjoy
Yeah, but it's not as much fun! 😂😂🤣🤣😁
@@BrianNC81, 100%
I bought a '22 Corolla SE manual and plan on making it last as long as I can. 8000km/6 month oil changes every time. Every cold start I let the oil circulate until the RPM drops (30-60 seconds) before I move the car at all/load the engine. I try to limit cold starting as much as possible. And almost everytime I drive the car and I can get it up to operating temp, I give it an Italian tune-up to keep everything flowing properly. So far it is a great car and I want to keep it working flawlessly. Thanks for another insightful video.
📩📩👆👆👆🎁📩📩 📩
Question"- whatis Italian tune up? Pasta/pizza is involved?
I'm glad i like toyotas. Dont know a single chevy or ford page that's as good at explaining things in depth as this one
it's like those brands don't value engineering. if you watch Toyota vs Ford engineering videos, you really think they don't.
AMD once again you nail it sir! I own a 2022 Tacoma TRD sport and absolutely love it. I know people complain about the transmission hunting, etc. This video puts my mind at ease. I was advised by my mechanic who is a Certified Toyota master tech to not do a pressurized cleaning of the fuel injectors. He said it would damage the direct injectors. Can you confirm this? Not that i plan on ever doing that anyway. Once again thanks for the awesome video!
I've been down this rabbit hole a bit...and AMD touched on it in another video: use top tier gas only. Top tier gas includes detergents that the others do not. There is published information on the large difference between the two as far as carbon buildup goes. While "The Motor Oil Geek" tribologist does advertise Gumout, which has a higher PEA content than others, I do find that the maker of GM's injector cleaner is no slouch and falls under the same EPA license as that for Chevron's Techron and also Toyota. BG and others are quite expensive and not really going to put a dent in bad carbon buildup as AMD noted it would really require a grinder to remove it, if it exists at all. Top tier gas costs little in comparison to additives.
This is awesome! It's funny because on another channel I watched a GM powertrain engineer claim that their DI engines don't have any carbon issues and carbon isn't really a problem anyway. (GM just uses single injectors unlike Toyota.) That's why I buy Toyotas...they care about their customers and longevity of their products.
GM ?? Are they still in business ???
I won't touch a GM made vehicle like the plague.
Joe Biden and the CEO of GM, a woman that I don't recall her name, were at a publicity stunt promoting GM'S new product line of electric vehicles. Joe Biden said that GM made the most technologically advanced EV products in the world. What we don't know is that Joe Biden and this GM CEO are planning together a bailout scheme. By the way Elon Musk was not invited to this televised EV promotion for Biden's New Green Deal agenda, that all taxpayers will be burden with.
Small correction: Toyota does NOT care about their customers.
@@donswier Don’t forget the Olds Diesel. I still won’t buy any GM product because of that debacle (and I was two years old when it was released)
@@confidentlocal8600 in what context exactly? Did you have a negative experience with a Toyota dealership?
Really nice video. Finally, some video with proper technical content. During the video I understood that some other manufacturers resolved the carbon buildup. Who are they? I was convinced that only Toyota was willing to.
Im glad you’re back tracking on the 2.5 V6 in my 2012 as you had said don’t ever buy one my AWD 250 is awesome and I squirt some cleaner in it every once In a while and it seems to help and you are the only one who ironically speaks ILL of the 2.5 if I have to clean it with what ever it takes I’ll do it , the awd is killer in the snow and there is no perfect car but these are close .
a catch can would help with the carbon buildup because the carbon buildup is coming from the PCV and egr system
Great video again AMD - I am sharing your knowledge with my 16 yr old. He is particularly adept at doing Italian Tune ups on our 2011 2AR-FE Rav4. So I whipped up the borescope, pulled out the plugs and compared the carbon build up on the piston heads over the course of a few months - and I have to admit the improvement is quite noticeable! His gas mileage isn't as good as mine obviously, but the enine is defintely stellar and you can easily read the stamps on the piston heads. :-)
If you have a 16 year old boy driving a car, you'll never have carbon build up problems. Ask me, I was also 16 once 😅
*Italian Tune-up. Betcha' everyone viewing this have done that more than once. Cheers!*
@@BubblesTheCat1 *So true because we've all been there. "Young and stupid" comes first to mind.*
@@blackrifle6736 Yep, my Mom drove slowly, and short distances, but always said that her car feels "different" after I had taken it out a bit. 😅
@@BubblesTheCat1 *Improving your Mom's driving experience by red lining it through the gears. That's a win-win. Cheers!*
As I new Toyota owner this is valuable information that is much appreciated. Thanks for taking the time to produce this video.
Thanks for that great explanation of how direct fuel injection operates. You are a fount of knowledge and hope you don't retire for a long time!
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For everyone that doesn’t know heavy diesel trucks and equipment have their own way of doing an “Italian tuneup” whenever it senses it’s getting plugged up with carbon, when in park the engine will automatically spool up to a higher idle Rpm for several minutes to heat up and burn away any soot that has built up in the exhaust system.
I have a GS350. When I bought it if I went wide open throttle it would blow out I guess dirt / carbon.
I do it once in a while and now nothing comes out. I think I blew it all out. I bought it used 3 years ago. It was driven on the highway but I don't think she ever went wide open throttle. It works!
If the stuff looks like sand that is your catalytic converter destroying itself. That happened to a friend's tacoma
I really enjoy your videos. Very educational and explained in a way regular people can understand. Thank you!
Very helpful, have 13 Sonata for 9 years only city driving 103000 Kilometers in Toronto Canada, will take on highway....
👍👍👍 Ford is even switching to dual port on the 24 Mustang and Ranger I believe. I'll never buy another GDI / DI ONLY engine again - it was AWFUL in the city short and long term.
I actually got rid of my 2016 GMC Sierra 1500 because of all the garbage GM threw at that motor. Along with direct injection it also had a DoD/AFM system that was problematic. I got wise and bought a 2015 4runner. Hands down the best vehicle I've ever owned. It does have variable valve timing but it's 4.0 V6 is tired and true and will long outlast that GM 5.3 in my opinion.
It surely will outlast GM 😊
I would agree. I have a 2003 Silverado, much simpler and more reliable than the later models with AFM and other complexities. This is my last ever GM product, for reasons I won't go into. We also have a 2021 RAV4 XSE Hybrid which we love, great mileage, many more creature comforts than the truck. The RAV4 will be our main transportation for years to come. We've been pleased with Toyota quality and reliability since we bought a 2009 Corolla and traded it for the RAV4.
Of course
Actually NEW GM PRODUCTS ARE GARBAGE
IF you deactivate the DoD system ( and correctly maintain the engine), most GM LS series engines will last as long or longer than any Toyota engine.
I just got in a 46 year old car that has what is widely considered to be Fords worst V-8...the 351 Modified Cleveland.
The owner was downright religious about maintenance and as a result it has a documented 376,000 miles on it.
Its finally getting a rebuilt engine.
@@donreinke5863 LOL...longer than any Toyota engine. We got a joker here folks.
I use lucas fuel injector cleaner on both the 2011 lexus is250 awd and the 2015 gs350 f sport awd, seems to help. Did check with my boriscope
Toyota invested a lot in this double injection system after seeing Korean cars attempt direct-only. No one likes hearing 'high pressure fuel pump'. It sounds like something expensive that will break inside 200k miles. On mass produced diesel engines, they've hardly just perfected the HP fuel pump in the last 20 yrs. I'll give Toyota the benefit of the doubt... They can have a complicated system and I'm still going to buy it... Used... In about 10 years
Loved letting us see the valves. The system works! Awesome.
From what you said about frequent short trip driving, perhaps that's one valid reason for getting a small electric car instead of ICE for doing that kind of driving. I don't like electric vehicles but this does seem to be one useful purpose for them.
Have you drive an electric car?
2017 Highlander XLE owner here, very interested in this video!
2013 Toyota Highlander SE owner here. 107,000 miles. Still looks and drives like new. Toyota RULES!
Please keep it up!!!!!! Invaluable advice!!!
My 2017 Tacoma is coming up on 170,000 miles on it. I change the oil/filter myself every 5k and unless it is not available, I always put Shell V-Power in it. I've had zero issues with the engine so far. I've changed the plugs, various filters, including the PCV valve. All fluids for transmission, rear diff, transfer case, front diff are all changed as well. The truck has not been back to the dealer for anything other than its initial checkup when new. When the engine is cold, I start it up and let it run until the water temp hits at least 50 degrees before I drive away. and I take it easy until the engine is warmed up. I do this to allow components to warm up and reduce stress on the head gasket and reduce chances of a gasket failure. Truck typically get driven at least 20-25 miles each time it is driven. And it gets an "Italian Tuneup" about every two months. I am going to change the drive belt on it this spring, since the original one is still on the truck and actually still looks fine.
What brand of gas fuel and grade you recommend for 2014 toyota sienna le and what brand of gas station you recomend
@@zeljkodjukic5889only use top tier gas. Google top tier gas stations near me
3000 psi sounds like my prostrate in the morning 😁
Always learn something new from AMD. What constitutes a "short" trip? Less than 10 minutes? I know most say that 10 mins is the time it generally takes for your oil to get to operating temp
No. 1, since following you, I've changed my oil every 5,000 miles. No. 2, I used Top Tier gas. No. 3, I drive mostly city driving (10.8 miles one way), so once month i hit the highway!
AS you said.. you showing a dual injector system.. so would not expect to see problems since the port injection is cleaning the valves. Down side of direct injection is also the fact it struggles at high revs (above 6k).. so duel injection is clearly best... where management computer can optimise between both systems.
😀 Let's be honest people. Toyota didn't have to do this type of system of adding 6 extra injectors and everything that goes along with them. This is more cost to them. Hats off to Toyota for doing this.
Keep up the good work always informative.
Toyota should be paying you for making such amazing content
Some manufacturers like Audi, BMW and Ford are notorious for carbon build up. Many car owners installed high quality catch cans to capture these blow up contaminants so they’re not reintroduced back into the combustion chamber. Our shop has installed catch cans from Mishimoto and other high quality manufacturers.
Ah I didn’t know this was another reason for a ccv delete
Fantastic info. Just traded a Honda with normal DI that I found built up carbon, for an ES 350 with this system!
Yes 2013 Lexus is350 burning oil at 113,000kms serviced every 7,500km, number 5 cylinder burning oil, carbon up.
This was my favorite video so far !!! I have been wondering about the D4-S in my 2021 TRD Avalon. Thank you !
Wow - excellent discussion.
A top mechanic understands how car systems work - not just know how to follow shop manual procedures.
Love the separate harness for the DI injectors.
Informative video. I wish you would analyze the 2024 and 2023 Honda CRV Hybrid Atkinson fuel injector failures that are starting to pop up.
So glad to see your success I remember the RUclipss you made in your home garage. Much respect and congrats.
It's a throwback to the olden days, we used to have to take our cars out on the highway to "blow out the carbon"!! Whats old has become the new!
AMD, You really built up suspense with the title of this video. 😉
Perhaps even the bigger benefit is that there is very little fuel oil dilution past the cylinder rings with this Toyota multiport injection system.
I have a GDI engine in my almost 10 year old car. My owner's manual "requests" that you only use gas from "Top Tier" gas brands, to make sure that the gas has more detergents than other brands. These detergents help keep the injectors clean, to prevent drops of fuel than won't burn, from drifting up to the intake valves. They also "suggest" using a "Techron" injector cleaner, every 3000 miles if you don't use "top tier" gas. I've actually been using both methods. It seems to be working, after 10 years. I noticed that when the engine that is used in my car changed over to GDI, it gained 45 more horsepower, and an extra 2 mpg.
To be honest, in a strictly GDI engine, there is nothing that you can add to the fuel to clean the intake valves.
Using an "upper engine cleaner" every service (before changing the oil) should help if done from day zero (I say should, because I don't own a GDI car so I haven't used this method).
The upper engine cleaner is added into the manifold via a vacuum line (and so comes into contact with the intake valves).
However if you haven't done anything like this is 10 or so years, you would need to use a different method to clean the valves.
@@notsureyou But you can make sure that your injectors are spraying a fine mist, instead of drops of fuel. Dirty fuel injectors can be the bane of modern engines. (even multiport systems)
The upper engine cleaner can be used if you see a drop of mpg or a poor idle, or misfire.
@@billkallas1762 Of course,
But if you are using the product to clean the valves, it's just not going to work in a car that is only GDI.
@@notsureyou Right. Nothing that goes through the injectors, will clean anything but the injectors.
The only thing that will clean valves (once they are carboned up), are solvents that go through the intake manifold. In Toyoda's case, that solvent is gas.
Last year my fuel pump failed but before it did I was getting an extra 60 miles from a full tank. I suppose less pressure but enough to open the injectors
I drive spiritedly even on a short trip. Once I get all the right tools in. I'll be doing a thorough carbon build-up cleaning on the intake valve on my car. Last I did an inspection. I found a lot of carbon build-up on the intake valve on my 2nd gen traverse. Seems the 1st owner only drove short trip mostly and had a lot of carbon build-up on the intake valve.
Some folks can't avoid short trips but keep in mind that moves you to the severe service schedule.
By far the best mechanic RUclipsr Iv come across thanks for the great information.
I was just thinking of Italian tune-ups the other week on my way to my daughter's state tournament.
Did you floor it real good ?
@@michesbianan on the way home I did. Took a little two lane highway that expanded to four every 10-15 miles that allowed for passing.
@@carlosortiz6742 Well done brother.
Direct injection isn't better if you need you valves cleaned. My Accord with 215,000 miles has been problem free. However I never inspected them, but like I said it runs great.
You provide the best Toyota/Lexus information on RUclips by far! We intentionally purchased two 2011 RX350's because they ONLY had port injection. Twelve injectors is profoundly idiotic. I'm surprised you did not mention that the computer switches between the port/direct systems automatically in order to clean the valves. Great work. Thanks!
Best car channel on RUclips, and it aint close! When I bought my '21 Tacoma with the D4S, I actually took it back to the dealership the next day because of a loud "tick", which in older cars would spell disaster. The tech explained to me that this was the direct injection. Almost sounds like a diesel when its operating. I shouldve done my research I suppose, I wouldve been aware.
Those damn things look perfect. Good work Toyota.
All of your videos are very well done. Thank you for all of the information. I wish there were more knowledgeable technicians who work to be the best they can be - Thank you
I actually have the new Hyundai Elantra (EU version) because it came with port Injection, but I'm amazed by your videos and dedication. I am wishing for a Toyota sometime in the future when I can afford it, and will have dual injection on their engines(they didn't have it when I was interested in purchasing)
Ah, finally a “believer” eh!?
Said it years ago: GDI is tricky, but SOME makers have figured out engine management algorithms to avoid and clean the intake valves.
From higher rpms and heat cycles, to valve timing/overlap and spark timing.
Thank you for your knowledge. Yes I’ve heard that once in a while to floor that throttle out on the highway.
Good that you showed how the d4s works.
Terrific video! Wish Nissan and Subaru did this as we have both. Our Subaru gets an induction cleaning every 30k at the dealer.
I think Subaru uses Toyota's D-4S (direct+port) on at least one of their models.
@@abdul-kabiralegbe5660 the BRZ which is technically half Toyota.
The Maxima used to use multiport injection. Did they change to GDI?
I had an Audi Q5 3.2 and had endless problems but especially with fueling. The pump went out, carbon buildup (gdi), burning oil like crazy, and it had less than 120k miles. Never again
This is good to know..only other duel injection review I heard of is Ford's late model 3.5 ecoboost...well, Ford's only switches to port injec when idling, at 100k mi, valves were caked with lots of carbon that requires service...wonder if toyota's system works differently
I'm glad Toyota put their D4S into the Subaru FA20 engine in the 86. I know the Subaru DI engines often get carbon build up
My es350 has 127k i always cruise going 110mph to 130mph still a really smooth ride.
What about Honda engines? Would love a video on their engines too!
Back in 2017 when I was looking for a car I was looking for one that wasn't only direct injection. I use to have a 2008 (MK5) VW GTI that I maintained very well (even got compliments about that and yes I changed the oil sooner than the 10k miles interval). Now to be honest I didn't run into carbon build up issues but that is only because the engine decided to eat itself before carbon build would have become an issue. I'm very happy with the 2018 Camry XSE V6. Just wish the paddle shifters were programmed differently (and to a slight degree it had a hatch opening...hmmmm wagon version...oh yeah..lol).
V6 Camry Wagon with a MT == take my money
Bizarrely engineered Jokeswagen engines often eat themselves.
My 2007 gs450h had D4S, never had carbon issues
Thank you for mentioning the Italian Tuneup!
Are there any newer Toyota vehicles that don’t have this engine?
All of your videos are very informative!
Thank you
"the italian tune-up really works." love it! :)
Sir, I love your videos. Thank you for your effort put in making them.
Interesting thing I'd heard before about Toyota's use of direct + port injection: they didn't "primarily" have both to deal with carbon build-up but mainly for better idle (DI tends to idle rougher)--it's just an extra benefit, this intake valve cleaning.
Yes, the port injectors are better at startup due to better mixing of fuel-air. Basically, more time to form a homogeneous mixture from the moment of injection till moment Intake valve opens. Especially useful during cold starts.
It's interesting you mentioned the rougher idle, I noticed a slightly rough idle in every DI vehicle I've been in. From my experience, DI Honda/Acura engines seem to be the worst offenders for rough idles.