Direct Injection, Problems and Solutions | The Fine Print

Most modern vehicles have a new brand of technology inside their motors, GDI or DI. Gasoline Direct Injection is starting to take over and the development has gone forward. Car makers from Ford, Chevy, Honda, Mazda and much more have adopted this technology. We try and explain what it is, why it was implemented including the problems with carbon buildup, misfires and prevention and other solutions.
Index:
00:00 - 00:49 Intro
00:49 - 1:15 Why Direct Injection is Being Pushed
1:15 - 2:18 How Direct Injection Works
2:18 - 3:32 How PFI or Port Fuel Injection Works
3:32- 4:18 How Dual Injection Works, DI and PFI
4:19 - 4:40 Breaking Down The Marketing
4:40 - 6:38 Why DI is Beneficial and Better than PFI
6:38 - 7:40 Problems with DI - GDI
7:40 - 9:18 PCV Blowby and Carbon Buildup
9:20 - 11:18 Intake Valve Examples - Good and Bad
11:18 - 12:52 Why Not Just Use the Old Way? PFI and Lean Burn
12:52 - 14:45 Preventing Problems - Catch Cans
14:45 - 15:50 Prevention - DI Injector Cleaning
15:50 - 17:55 Prevention - Choosing the Right Oil - NOACK
17:55 - 18:55 When Prevention Fails, Carbon Cleanup - Walnut Blasting and Chemical Stripping.
18:55 Final Thoughts

[@TheGabe92]

Wow, this is better researched and presented than anything you can read in car magazines today! The level of quality in the content of this channel is amazing.

[@Honda-nn3ee]

It’s always is!

[@Mgoblagulkablong]

He completely ingored the worst part of GDI engines, what their emissions do to your body...

[@CalTN]

Goose man is really stepping up his game.

[@TheGabe92]

As my vehicle eletronics prof once said: You don't inhale the exhaust gasses from your own car if you car has a functional exhaust. Therefore you don't care about your own car's emissions on a fundamental level like you do about the emissions of the car in front of you. Which is why it needs to be regulated by the state.

[@R777-RLM]

Car mags' such as Car & Driver, have almost no real technical data or graphics, like they did in the past.

[@stephanedagenais1863]

Quick note on blow-by fella - it is travelling INTO the crankcase from cylinder combustion pressure, not back through the intake valves into the intake. Otherwise, you’re right, nasty side effect of DI. Cheers!

[@dforge8917]

Had to go a long way into the comment section to find someone, besides me, who noticed his PCV flow direction mistake. Like you said, otherwise good video.

[@JustADude564]

Yeah the explanation of crankcase pressure was... Interesting to say the least.

[@mjs72660]

This was the best researched, and best presented, examination of this topic that I have ever seen. Congrats on a job really well done.

[@andremarshall5011]

I agree!!

[@Kodiak727]

Love your solemnly tone of voice. I thought i was getting a lecture on how to live a better less sinful life.

[@bigyeetus2866]

Man I remember when this channel has less than 20k subscribers, and yet even after all the popularity (still not popular enough IMO) the quality content just keeps coming and coming, even though I'm 2 years late on this one

[@johnbeckham1483]

FYI & as a courtesy here from your friends at BestLine Racing please review our line of lubricity products with a relatively new science called Nano Diamond Technology! Our products exceed the new ILSAC GF-A Standards! Visit us here: www.extreme-engine-relief.solutions Thank you...

[@Cmobley_]

Best vehicle content on KZbin.

[@_drivEN_]

2 years later and they're still amazing

[@redbkr]

He missed one of the biggest reasons for DI: the cooling effect from the very-high-pressure gasoline injection allows as much as a full point increase in compression ratio, which translates to both higher power output and better fuel economy. It's the main reason that modern turbocharged engines are able to run 10:1 compresson ratio.

[@marcuslang6153]

From my point of physics understanding there is no difference in terms of cooling whether the fuel is port injected or direct injected!?

[@sherrokinchen5253]

It sounds like you’re talking about the Ford eco-boost engines from 1.6 to 3.5 L👍🏽

[@garymanis6305]

@@marcuslang6153 It depends a lot on the type of port injection. Some are batch injection where fuel is sprayed constantly. Others use sequential injection and only spray when the intake valve is open. The cooling effect is overrated in my opinion. The main benefit of DI is multi-squirt. You can start with a lean, fast-burn squirt then add more to increase power. You get a hot, controlled, efficient burn. With DI, you can squirt fuel in late, which prevents pre-ignition and/or detonation. The FA20DIT runs 12.5:1 compression and 15.9 psi sustained boost.

[@marcuslang6153]

@@garymanis6305 thx for the explanation! Very much top-notch information in a few sentences👌🏽😊

[@cyclonicblade]

Yup can increase spark advance or cylinder pressure .

[@waltergroesbeck4214]

Was not fully informed of the disadvantages of direct injection when I bought my Audi TTS. At 60.000 miles an independent shop advised me to have the walnut blasting done, the before and after photos were much more dramatic in terms of build up than even your pics, a sharper throttle response was notable. One note, the shop charged $700.00, my audi dealer "estimated" the same procedure at $1900.00 to $2100.00. would you comment in the future as to additives that promise to reduce these deposits ? Thanks for an excellent, understandable presentation about a real world problem.

[@TheWhisperingPenis]

I found a local guy to do it for $300. I asked him if I could help him clean the valves and replace the Intake Manifold, he dropped the price to $150. Now I have a clean engine and the knowledge to do it myself for $150. Pretty amazing deal. Then again I own a Mazda and the Intake Manifold is VERY easy to take off and positioned right in front of you. Its really not that hard of a job. A few hours cleaning without special tools. If you let the valves soak the junk comes right off with CRC after an hour or so.

[@Zangreten]

An air oil separator/ catch can will reduce deposits on the valves

[@johnryan6658]

This is one of the reasons for Toyota's reliability. A bunch of companies just jumped on the DI bandwagon, and then just left it to their customers to deal with the consequences. Toyota waited until they had their dual injection before they started putting it in everything. Yes, I drive a Toyota. It was the last year of port injection for my model. Every year after that has been dual injection.

[@phil4986]

Toyota is truly brilliant in this regard as the port injection cleans the entire intake system including the valves by passive gas flow through the system and then the direct injection provides increased economy and power. It's simply a brilliant solution. I will never own another direct injection - only - vehicle again. I owned a GDI 2012 Kia Rio that was an insane nightmare.

[@manuelsmiley7125]

Chrysler took the same route as Toyota

[@fa-ajn9881]

​@@manuelsmiley7125 Ford's Coyote V8 also has this.

[@FlatPlaneCranky]

I just bought a 2023 tundra and I told the salesman and the concierge that the truck has 12 injectors and they were in full denial. They both said it’s only got 6 cylinders. Why would Toyota put 12 injectors in a 6 cylinder. After a short explanation they were still In semi denial but they understood the concept of direct and port injection. I told them the same system is on my ‘21 rav4.

[@johnryan6658]

@Will Jeff except for maybe the service people, the staff at dealers usually don't know what the fuck they're talking about. Never have I visited a dealership where I didn't know more about the car than the person trying to sell it to me.

[@laurenceho1915]

This is by far the most professionally made video (very nice graphics), not to mention direct and comprehensive. Just a great short and easy-to-understand video. Well done.

[@St1ngerGuy]

Great video, I have run into this with my own vehicle. For anyone willing to get dirty and clean their own intake valves I have found that lacquer thinner works fantastic. Definitely don't do it around any kind of flame or spark, disconnect your battery as well. I did this to my 2012 Turbo'd Optima and the whole process took a few hours. I spent maybe $20 vs the $600 it would have cost. I'm an engineer and like to tinker with stuff and I like saving money. If you have a VW, forget it you will need to have a dealer service it because their engines are setup to be impossible for your average Joe to work on.. I still don't know why the car manufacturers don't just use internal catch cans that pipe the clean air to the intake and the oil vapor to a chamber under the oil pan. Use a longer plug that seals off both the oil pan and the chamber. When you change your oil it also drains the chamber of nasty blow by stuff. Simple fix and the catch cans could be made to be 100% effective using or a large amount of baffling. I put stainless steel wool in the bottom of my catch can to help it remove more nasties.

[@EliteOnTheBeat]

If you're an engineer then you should know "why the car manufacturers dont use catch cans" and the answer is because THIS way the car doesn't last as long and that means you will be back to the dealership SOONER to buy another car from them.

[@anthonye3680]

Or take a catch can that cost $3 and multiply that by 300,000 or so of cars and you see why not, also what the other guy said they want you to take to dealer.

[@glenndavis9421]

Ujjain

[@paladain55]

Engineer here as well. I used e85 to clean mine. $5 and i did a piston ring soak as well. Worked great. The solution is just to be a bad boy and put your pcv system to a vent to atmosphere catch can. Swear to god if you do this a good car really should last forever. Just have to be aware that a vent to atmosphere setup leaves the oil slightly diritier than a vacuum system so you need to change the oil every 3-5k.

[@Deceptive24]

What an excellent video/production!! Clear, unbiased, honest and no ego, just the facts and leaving it up to us to make a decision. The world needs more people like you!

[@nailhead668]

Iiii😮

[@buffystclair9042]

Very well explained video. Retired now but 45 years repairing cars I often find myself explaining maintenance like this to customers. I dont have 20 mins as your video is but your message is spot on. I wish all car owners would be forced to watch your video and not just think your mechanic is “ up selling” all the time but with that being said , there are often franchises that rely on “up sells” . Find and trust a good shop/mechanic

[@billsanter]

That's the problem. You get upselled so much you don't know when to actually believe them.

[@FG-fk6jb]

Absolutely the best explanation of complex things on the entire KZbin! The guy is brilliant with great, I would say kinda 'soothing' way of delivery.

[@TheDuvee6]

Agreed. His voice is really soothing.

[@IndustMachWerksofTX]

I used STP pro series intake cleaner and it cleaned the valves right up. Good stuff, don’t need to remove anything, it just sprays in the intake for about 10 minutes with engine running

Finally someone who tells the truth, the purpose of super light oils 0w20, 0w30 is to reduce consumption. The manufacturer of my car requires 0w30, I use 5w50 and it greatly reduced carbon buildup and lengthened the life of the timing chain, which is another problem endemic to new engines, timing chains that stretch and last 80,000km. Obviously I live in an area where the car does not know temperatures below 5°c

[@rand49er]

Some observations: The blowby gases do not move up past the rings (~7:17), they move from the combustion process down into the cylinder and into the crankcase. They are then routed back into the intake via a positive crankcase ventilation (PCV) valve. This has been done since the 1960s (I believe). Before that, it was routed directly into the atmosphere out of the bottom of the engine through what was known as a breather tube. Watch an old movie and notice the dark area in the center of highway lanes. That is a big long streak from all the breather tubes from all the old cars as they passed by where oil dripped out. Back to now, sludge does indeed build up on the back of intake valves (not on exhaust valves) for two reasons. The fuel injectors in GDI equipped vehicles do not spray fuel on them as stated and many engines now are smaller and work harder with higher cylinder pressures thereby creating more of these blowby gases than engines of the past. Well, is this a problem, the buildup on the back of the intake valves? Maybe and maybe not. Don't let videos like this say it's always a problem because it most certainly is not. Skipping ahead, the PVC system is most definitely not under vacuum as stated in the video. There is positive pressure in there not a vacuum. Only in turbocharged or supercharged applications are there pressures greater in the intake than in the crankcase and then only when boost conditions exist which are brief and infrequent. Therefore, having an oil that has low volatility in a vacuum is worthless. In summary, this issue is way overblown. Only under rare circumstances do you need a catchcan. GDI technology allows manufacturers produce powerful, clean burning engines. If you run your engine hard and have 300k km or 200k mi on it, you may want to consider cleaning the intake valves but not before. Don't buy into these scare stories. I have a GM 2.0L turbo engine with GDI. GM recommends to not clean the intake valves on my engine. GM designed it, they've tested it, they know what they're talking about. Otherwise a good video.

[@erickdj2009]

I don't know nearly enough to have an opinion one way or the other. I do have a GM car with a direct injection engine, and have found out that GM will void the warranty if a catch can is used. Any ideas why they would do that if the catch can is only supposed to do good things for the engine? Could it be that they simply don't want any modifications at all to the engine or could there be a legitimate downside to using something like a catch can?

[@thetechlibrarian]

@@erickdj2009 catch can makes you more vulnerable to introducing water into the system

[@erickdj2009]

@@thetechlibrarian How so? Does the catch can collect moisture or condensation?

[@adeelahmed1319]

@@erickdj2009 if vented to atmosphere it turns a closed loop into an open loop increasing the propensity for atmospheric moisture to enter the engine.

[@vnorvi]

Indeed. The P.C.V system causes the same issue for any car other than direct injection.

[@jessari]

you really deserve more views and subscribers. thanks for all the great, mostly unbiased info on all your videos!

[@LORENSSIOK]

The quality and professionalism in this video is top noch. It's a pleasure to watch and learn.

[@vincoinc7]

This is the best explanation on this that I have heard, I never quite understood why we needed carbon cleaning on DI engines and how the catch cans worked. Just everyone spouting off that you need a catch can with no reason or explanation.

[@nnannaokoroji8451]

Very informative! I can appreciate why Toyota continues to make their trucks port or at least port and direct injected….. Go Job Toyota!💪🏿

[@ramy05rr]

This has to be one of the most well explained videos ive seen so far. Best teacher ever your explaining it in a way where even if your not a mechanic you will understand it. Im a mechanic and i still have not been in a class were the teacher isnt trying to act like there are rocket scientists using words to try to baffle their students.

[@johng.4959]

Wow... This should be a mandatory video to be watched by every consumer before they make a purchase. Kudos to you and how you explained this technical subject in layman's terms. Well done Goose!!!

[@nicksmith1363]

Makes me happy I chose a lease over finance on my new GDI car!

[@mainwayne1352]

Nothing should be a mandatory video unless you’re a communist.

[@csn6234]

@@mainwayne1352 Congratulations. You have been chosen to receive the award for "Most Idiotic Statement Ever Posted to KZbin", with secondary recognition for "Insanely Bad Attempt at Humor".

[@jumpercable20]

Yes, had I known Kia's and Hyundai's had GDI, I wouldn't have bought it, I would have bought myself a GM crate small block and found and old car to put it in and I"d be more than happy as I'm old school and cannot stand front wheel drive no matter how many horses it has. I believe the only thing the front wheels should do is steer the car. And I'm guessing that's why SUV's and Pickup trucks are such good sellers, I don't know too many people that just love front wheel drive.

[@DS-wo8wr]

We’re stuck with this... everything has DI now.

[@TheBlackDeath3]

Did you come back through these older videos and segment the timelines? That's dedication, dude.

[@Meekmillan]

Thank you

[@beizhang7799]

I really dig your effort in adding a well crafted animation scheme into the explanation, many content creators don't realize there are a vast amount of viewers whom maybe visual learners, yours really nailed it

[@user-bk2ig8bf6o]

There’s is no such thing as a “visible learner” when it comes to to engines, you cannot imagine the parts in your head the whole time. Unless your definition of visual learning is a whole demonstration, you learn just like everyone else🤦‍♂️

[@danpatterson6937]

Very well done boys! A great explanation of a troubling problem and one that will leave 90% of owners with big problems and high maintenance bills. Prevention tips are excellent!

[@Lasertrac]

Once again one of the best explanations of the differences between both systems. Great graphics. I salute you sir

[@landirenzoPL]

Congratulations. Deep and clean analysis of major problems everybody faced with DI engines .

[@lashlarue7924]

This was the best communicated, researched, and annotated presentation of a complex topic. Hats off! My favorite car channel on KZbin! 👍

[@chrisvigo4880]

I watched alot of videos on youtube...this might have been the most informational video about cars ive ever watched. Awesome job brother

[@halxiii7538]

absolutely amazing video, great information and the break down was flawless. I literally bought my 2018 Tacoma simply because of the duel injectors.

[@seewithsam]

Uploaded 4 years ago but still very relevant. Not many manufacturers are talking about this. Especially now all engines are going turbo direct injection.

[@JoshuaJDarcy]

Amigo you are a gem! I have owned a 2006 Lexus GS300 GDI for a couple years and did not do my homework on it. I have done nothing but struggle with doing doordash full time and blowing through two quarts of oil a week no leaks keeping the combustion Chamber clean as I can dumping two cans of seafoam spray in it a month and I know I can't keep doing that but I just want to say this was an amazing presentation on very very important subject matter. And as you mentioned, i don't blame the engineers and car producers because you know the regulations that they have to keep up with and balance that with the customer satisfaction as he said so it was just a failed experiment and wow I didn't know what to do with this car I love my car and I keep my cars until the wheels fall off. And thanks to you I'm going to be able to keep mine until the wheels do fall off with some hope at the end of the GDI road which is very Bleak right now but thank you again so very much for this informative video you have really really made a difference in my Approach and now my attitude towards confronting this failed but not dead technology

[@zefolantar]

OUTSTANDING video!! Mr. Goose and his vids NEVER lay an egg 🥚!! BRAVO 👏

[@fg8001]

As always excellent content. Keep it comming, hands down best around here. Glad to see your sub count climbing, even though I know it's not why you do this. Keep it up!

[@waynesanchez6504]

Sold aftermarket parts ten years. THIS IS the BEST VIDEO EXPLANATION EVER!!!!

[@geoff8253]

This is probably the best video I’ve ever watched, ever in my life ……no joke. That was so informative I learned so much.

[@anchorbait6662]

Wow, I'm very impressed with the quality of the content here. This definitely earned my Subscription

[@MrMotorNerd]

Yeh i agree

[@mpick9404]

Fantastic video. Really interesting & informative, very well explained. Loving your work 👌

[@rafalpielka3426]

A very good professional lecturer and a great instructor: organized, responsive, patient and able to clearly explain complex topics.

[@crisespinoza854]

Wow, thank you for sharing, i felt like i was in college again for my engineering class, this time though it applies to my real life experience. I just got a car with Gdi and was browsing on ways to maintain. Amazing facts one must know for today's car owners, unless of course you have tons of money to spare for the expensive electric cars. ;-) thanks again

[@Carstuff111]

I have a 1992 Honda Civic DX sedan, it was abused and it is worn out (273,000 miles as of typing this) but I still manage 30-48 miles per gallon out of it. I know that with it running well, and a good tune, I could improve that to much higher. Direct injection is cool and all, but I will stick to my cheaper to maintain port fuel injection because it does the job just fine. Great video, you just earned a new subscriber :)

[@superpeluso1]

Carstuff111 there’s no place for ricers here, move along

[@Carstuff111]

Or you can just bite me :) I am not a ricer, I actually take care of my car, thank you very damned much. Ricers do not take care of their cars and do stupid ass mods for the "look", and add loud ass fart tube exhausts to "sound fast" when all they are doing is making it easy for the cops to find them. Learn the difference, ass hat.

[@michaelhall9138]

Had a '92 Civic LX that I achieved 50 mpg... TWICE!!

[@Carstuff111]

Awhile back I had to change out my clutch and transmission, the original transmission someone let it leak all of its gear oil out and the bearings for the input shaft had literally fallen out into the transmission. The transmission I now have came from a 1993 Honda Civic VX hatchback, and it is insanely high geared. 1st and 5th gears are identical to my original transmission, but 2nd through 4th are staggered, and the final drive went from 4.088:1 to 3.25:1 and bumped my gas mileage by a crap ton. At 70 miles per hour, the engine is only turning 2,400 RPM, and I love that, makes driving on the highway amazing.

[@robsonrissotrainer]

@@Carstuff111 that's true lol

[@user-pg9fv7su8q]

My new favorite channel! Right up there with engineering explained but I like the projector a lot better than the Whiteboard!!! You'll hit a million subs in no time!

[@tylerpiper3927]

EE is another another (lower) level though, the explanations can be kind of rambly and unpolished and half the time it feels like classroom presentation while you stare at a whiteboard even though the whiteboard isn't all that informative.

[@oldtwinsna8347]

Problem with EE is how each video has sponsored marketing and he just pushes the product down your throat as, "good science".

[@mikea5205]

chuckwalla - Agreed. It was funny at first but now he's just in the way and contributes zero.

[@dusty_five_2]

I've been already well aware of all the stuff mentioned in the video. The individual in this video explains it well, much better than 95% of the other rubbish I've seen on youTube about direct injection and carbon build up. Well done 🍻

[@T.Hansen]

This is an awesome video! I do walnut blasting on DI vehicles and have referred some of my customers to this video to better understand and show them why they are getting this service done!! Thank you for a great explanation with great visuals!!

[@g41thomas]

Excellent video. This is how every KZbin video should be!!!! I really enjoyed it. Nicely explained,great graphics, great voice. THANKS X 100😀😀😀😀💗

[@pfsantos007]

This is probably the best video I've ever seen that explains what's going on in an engine when it comes to the visuals. The 3D animations are clear and just beautiful to watch.

[@trakeespree]

I took the intake off my 3.0 SRX and used regular gas to clean my valves. Worked. I found out Gasoline cleans carbon really well. I poured gas in, used a long wire brush, soaked it up, blue it out wit air and it worked.

[@aciddiver1978]

You are spot on on this. My experience with my gdi car, dealer recommends 0-20, then my car burns 1 litre oil 5.000 km. When i use 5-30, it doesnt show any oil loss after 10.000 km. And after following their recommendations for too long, before i did my own research, im afraid i have a problem now. Car har run 80.000 kms, and runs rough at cold starts and in steap hills on low rpms. So thanx GM, for recommending 0-20oil.😢

[@gregorymalchuk272]

Did you ever figure out the rough running at idle? Which model and year is it?

[@CalaisRider]

Wow an extremely comprehensive overview. I learned a lot from this presentation. Very professional and non emotive, a rare thing now days... Thanks for taking the time to post and explain. Very much appreciated.

[@MasAUS]

This is one of the best videos I have ever seen , and I do watch a lot , very well done sir

[@chalkster4723]

Totally agree with you. Without question a fantastic video, not to mention the impressive graphics that perfectly complement the presentation.

[@markhitt2015]

Well done sir!!

[@truthbetold89]

The amount of effort put into this video is the reason I subscribed.

[@paulmercury5182]

Great. Most of it still goes over my head tbh. But this helped me understand better. My car has DI. 67k miles. No buildup problems that I can tell so far 👍

[@Mukhtar50]

Amazing, clear and helpful explanation Thanks and looking forward to see more of such quality videos

[@TheFrenchPug]

Phenomenal Video!!! Best explanation I have found. I knew my oil catch can has been making a big difference in my BMW N54 Engine.

[@tony37068]

No, Catch Can does not make a difference, at least it is minimum--according to the engineers

[@DullerCrab]

@@tony37068 Bottom line is, after thousands of miles those catch cans are filled with oil, without the catch can all that shit is going straight back into the engine

[@robring9847]

Awesome explanation! Have 2013 Sonata, I use CRC GDI IVD Intake Valve cleaner thru air intake, have to be really careful maintaining low rpm's during and after treatment, works like a port injector, absolutely best video I have seen, THANK YOU.

[@pandoralynettewalker4625]

I, for one, Wholeheartedly Appreciate your very detailed &in-depth video that is BOTH informative&even educational for that matter. Its very few&far between that I find videos on KZbin, much less on Any other media available where the content covers as much detailed information that just about anyone should be able to understand. This video, it helped a lot and am sure many others learned quite a bit from just this video alone!! Keep up the good work and thank you for sharing what knowledge you have along with your personal experiences!!!😎

[@mckav2358]

"Finally"... a comprehensive explanation of GDI engines

[@pasoundman]

Long overdue. I had to work it out myself. Obvious when you stop to think.

[@martese6555]

pasoundman what was so obvious

[@pasoundman]

@@martese6555 Modern engines use positive crankcase and exhaust gas recirculation. That will introduce hydrocarbons into the intake which then get burnt onto the inlet valve rear faces. This can 'kill' an engine.

[@robgerety]

This is an excellent video. Thanks for the hard work. I understand fuel injection waaaay better now.

[@georgevavoulis4758]

Thank you for upfront no nonsense none biased reviews .

[@dehypnotizer]

I'm glad KZbin has gotten me here. A very good vid, consistent with all I already knew on the topic. You've gotten yourself a new subscriber!

[@simflier8298]

Hey, great vid! Thanks for sharing those important facts with us. It's an eye opener!

[@danlearned9728]

Mark, long time subscriber and former factory trained line tech for VW, Porsche, Audi, service manager and crew chief/fabricator for several drag cars, SCCA class cars and drag racing projects. I appreciate your efforts producing these in depth tech articles.You mentioned the install of oil catch cans to reduce the blow by products in the intake stream. One can find many online via Amazon, Ebay and aftermarket kits from vendors ranging from $30 to $200+. I think it would be interesting if you or someone could do a break down on the features, advantages of these products. Some are well designed, some are junk. It would be beneficial to have someone separate the 'wheat from the chaff' per say for those that care about their cars.

[@danielfl.9347]

Hey Dan. I have a 2006 VW Golf MK 1.4 TSI BMY. The car has no problems, YET... What can I do to prevent it? I use Shell V-power and fuel cleaner every 6 months. Is there anything else? I change the oil every 10.000kms with Castrol 5W/30 LL3

[@Davido50]

My '15 F150 EcoBoost 3.5L GDI Twin Turbo has been terrific. 149k mis. Use 89 octane Shell always. Pennzoil Ultra Platinum full synthetic oil @5k mi OCI.

[@jackfoster8319]

Humble mechanic has an excellent video on this

[@jerkimerjames3545]

It's highly dependent on your emissions standard in your area. Southern California Air Resouce Board demands cutting edge technology. Due to the fact the SFV has 20 million engines burning every day along with Long Beach Ship, Boat, Truck, Train traffic 24/7. If you want info for OEMs that provide the proper Impactor device. Cummins has great products from Fleet guard.

[@1610nsb]

I agree!! Looking forward to that I care about making them last!! Thanks

[@aagetreffen]

Excellent presentation! This is among the best car videos I have seen on youtube.

[@rickeymitchell8620]

this is great info since we just bought a 2023 Kia with GDI. very well presented and the animations were a great help in promoting a true understanding of the valvetrain and problems that will occur. Thank you for bringing this to us!

[@seatime674]

What Kia did you buy?..

[@botdingo]

Thanks for this man! Best car guy on KZbin

[@kphillips7922]

GDI.Guaranteed dealer income.

[@VinnyMartello]

Well said!!!

[@RothBeyondTheGrave]

Ding ding!! Just like all the other bs in modern computers, oh, I mean cars

[@joebrown9621]

owned my GDI hyundai 5 years not even skipped a beat yet.. and my neighbour just sold his after 9 years so some manufacturers well go while a while before cleaning be 6 to 7 year when spark plugs would be due at that point

[@roscoeelcocko1863]

@@joebrown9621 whoosh 😐

[@rcpmac]

Really gets old hearing the simple minded conspiracy response to just about everything.

[@johnteller6732]

Our shop picked up the 3C Carbon Cleaner from ATS Carbon Clean about 9 months ago. It works FANTASTIC! We tried all the usual chemical companies, BG, SeaFoam, etc with very little effect to carbon deposits. The 3C does the job in 15 min without disassembly. Highly recommend looking into. Great Video!

[@JanessaforIsrael]

can you put this is gas to clean or have to take apart to clean?

[@kirkshirley1319]

It decarbons the injectors and the oil system but it doesn't clean the intake valves.

[@777dragonborn]

As atech I can honestly say the newer gdi and thinner viscosity oils ,which are all used to increase fuel economy or getter more for less. But the expense is sacrificing engine longevity and increasing higher maintenance costs. So it's really benefiting the sales department more than the consumer.

[@arevee9429]

Great explanation of how injection and PCV works. Thanks!

[@pedro922]

Thanks Man! This explanation was Gold! Very detailed, researched, and very precisely on ALL aspects, for more of this on youtube

[@Iowa599]

I run a lawn mower fuel filter between the crankcase & PCV valve on my car. I get the clear ones, so I can watch the filter element. They last ~7000 miles, on my car, and they're cheap. 1/4" in/outlet filter was an easy install by only cutting the OEM hose, and it's right on top! (for an '01 Prelude with ~126k miles)

[@marcelvarela3706]

After watching dozens of videos, nothing compares to the explanations in this video. I have a DI engine and I suspect the poor performance is due to carbon buildup in the valve intakes as other owners of the same model have reported this problem. Thanks for the class!

[@androiduser2338]

Thank you. This is an excellent presentation and is very informative!!!

[@inhocsigno9151]

Detailed, good video. I recently saw an explanation for use of CRC Cleaner for GDI engines. I does not look as good as walnut blasting photos, but much easier, and cheaper to do. I don't work for CRC, but the video is helpful and informative. Titled: How To Use CRC GDI Intake Valve & Turbo Cleaner.

[@justinbelk89]

Great explanation, I have a 2023 Kia Sportage with a 2.5L duel injection engine. I’m so fortunate, I didn’t preselect this engine when I was shopping but discovered the issues with GDI after my purchase. Carbon affects all manufacturers and now that I know, I’m staying away from GDI exclusively. My 2013 Toyota Highlander had 237K miles on it, butter smooth until I sold it recently, obviously it was MPI. I’m planning on keeping my Kia long term too, and luckily I have great 👍🏾 odds with my current dual fuel injection system. I’ll share this video as I hope it reaches many. 👍🏾

[@Mike-mz9cm]

Good video. Explains a lot of symptoms i experienced with my ALH engine - my EGR was so dirty all the time. And likely explains why my VQ40DE is running so well at 200k + km.

[@michaelnelson9140]

I , m a retired engine mechanic. I still fix my own vehicles. I won’t own anything built after 2000.

[@bq5577x]

1.2 TSI, 270.000km liquid LPG direct injection, runs like a champ! Much better than the silly 1.0 Mpi engine I've had before. Plenty of torque from 1500RPM and smooth driving! Awesome!

[@cartere9981]

My 99 Toyota Camry solara coupe was the most reliable car I've ever been around I was an idiot when I owned it when it came to changing fluids and maintenance and kept running forever used to have to drive it 250 miles a day for work

[@tokamana]

This is a huge eye opener for me as my Wife and I own two modern Hyundais with GDI engines ... I know my mechanic personally but will have to see if he's able to clean the valves for us. Thank you for the great content.

[@tokamana]

Cheers! I brought it up to my Mechanic tonight and he said he put some throttle body cleaner through the system. I'll make sure i do it every 7500km when I change the oil. @3 name changes allowed every 90 days.

[@jayslife94]

Thank you ! It contains so much useful information, it's simple and really well explained !

[@onthemoney8356]

Your videos are so detailed oriented. It's unreal.

[@RobertBlanchard]

Thank you for the lesson! Looking into purchasing a GTI and want to be proactive... great youtube site by the way! I have spent quite some "Wife is starting to get mad at me" time on here... keep up the great work!

[@Houston1906]

Very informative and well done video! I think the Toyota idea of running both port and direct is the way to go.

[@elmariachi821]

Great vid! Informative and to the point, no silly acting by presenter, stupid editing or music. Thank you for posting this.

[@12B4Christ]

This guy is literally speaking from my mind, having experienced this firsthand on a VW GTI with direct injection and turbo. The gunk shown here may as well have been my engine with less than 100k miles. Do not buy direct injection cars unless you truly do enjoy spending 1000s in a shop and being down a car on repeat.

[@offyezzy8707]

Don't buy VW direct injected engines

[@12B4Christ]

@@offyezzy8707 Ya what I said lolol.

[@georgejungle138]

@@12B4Christ ok boomer

[@ozzstars_cars]

Having an automotive channel here on KZbin that is mostly mechanical related I found this video to have excellent and true fact info. Great job!

[@Messier87_M87]

Ozzstar See you on the VinWiki channel too..lol

[@frankburn6312]

except that it's not " a motor": it's an engine. Motor=electric.

[@ozzstars_cars]

+frank burn you are correct. The video is informative and true to fact. Nothing is perfect.

[@ozzstars_cars]

+True-Patriot I do get around from time to time ;)

[@idleratchet]

frank burn tell that to “General Motors” or “Ford Motor Company” or many of the other manufacturers with “motor” in their name.

[@douglasj2254]

Thanks for an outstanding video. I must say, if I had properly researched GDI, I would not have leased a new Sentra. Since it's a lease, I can "dump it" in a few years, obviously. But if I still love it at the end of the lease, I doubt I would buy it because of these issues. Peace.

[@garybaldwin1061]

Great video. I've read none of the comments. But the BG and CRC distributors will come out in force with their unproven chemical wash. This can damage your engine. Ford and other automakers say don't use these chemicals for many reasons ...at any time. The only way to prevent carbon buildup is using a air/oil separator(catch can) and walnut blasting. Don't spray anything down your intake.

[@newtagwhodis4535]

This is amazing! Awesome information dissected so well. Thank you so much.

[@NEWNATURE777]

Excellent presentation Mark , as always! You did mention oil catch can plus installing water/alcohol vapor injection it's a simple and economical solution for GDI engine carbon build up... keep up the great work 👍

[@goblenator9688]

This will also help with detonation

[@NEWNATURE777]

@@goblenator9688 correct, water vapor injection had been proven to increase mpg, help with detonation,less strains in the engine therefore less engine wearing, etc....

[@markrichie897]

BOY did he get blowby backwards. Blowby happens on the compression stroke and builds up in the crankcase. Than that pressure is past into the PCV (Positive crankcase ventilation)valve into the intake so it can get re-burned. That is how the oil vapors are getting onto the back of the intake valve or valves.

[@verwehtverweht9053]

Right... The explanation given in the video is wrong...

[@johncanalese588]

You are correct. This guy in the video got PCV all wrong. Even his explanation is illogical. Higher pressure in the crankcase bleeds into combustion chamber? So where was this ‘higher pressure’ coming from? Was not aware that combustion took place in the crankcase - dope. He spent more time editing his video for dramatic effect than fact checking.

[@crotaflyingsolo4759]

Thank you, now I don't have to write a correction for him. Was a great Vid till he got to the Blow by. But a well made video except for the incorrect Blow By Info!

[@Super1story]

Yep, a good example of total misunderstanding of the PCV system.

[@zmanmd1641]

Blowby happens during the power stroke when combustion chamber pressure is the highest. This extremely high pressure can force small amounts of gas past the rings into the crankcase while the piston is going down. The pressure during compression is relatively minor in comparison and if the rings leak during compression, they will absolutely let the combustion gases get by during the power stroke. That piston would be well down on power and needs a rebuild to restore the rings.

[@pasoundman]

Excellent ! Straightforward, no-nonsense explanations that most will understand. Why isn't this style of video more common. Answer, because certain 'actors' would try to mislead you.

[@hb-ol9oc]

Just came across this video, outstanding , impressed with the quality of the video and clarity of the explanations. Cheers man !! Thanks god that my LS3 Camaro is Port Injected !! I wouldn´t sleep well if I knew the valves are getting that dirty in my motor.

[@paulcallaway71]

When looking for a used car a couple years ago one of my goals was to get a vehicle without direct injection just to avoid the carbon buildup. Granted, a DI engine "may" only need valve cleaning a few times during ownership, but my choice was to avoid it all together. I do have a feeling as time goes on it will be harder to find a non-DI engine but I'll deal with that when the time comes and "maybe" this service will common enough that cost isn't too outrageous.

[@dannygreen7473]

DI is, and always will be overcomplicated junk.

[@perpetualgrin5804]

Smart comment 👌.

[@georgejungle138]

@@dannygreen7473 ok boomer

[@davidperry4013]

I highly recommend a 2012-2017 Camry

[@beboboymann3823]

@@georgejungle138 At least boomers can change a tire and replace a battery without wondering if the fluid in a battery would taste good. Millineals……..Gen Z’ers…..most useless generations to ever come along. Eating Tide Pods pretty much confirmed that. The inability to drive a manual transmission is also laughable. More than likely the guy that will clean your valves for you will be a boomer. Be careful who you criticize.

[@captainmorgan6035]

Yep just did catch can on mazda cx-5. Nice and difficult to get to and they use 5/8 on pcv and and 3/8 on intake so had to use reducer, fun stuff hope it stays sealed and doesnt clog. After 45,000 valves looked like the ones in your pictures. Bought one off amazon and re-engineered it to work better. Just checked it today and was almost half full After bout 2000 miles.Trying to clean with seafoam or anything else with flushing method will get you a nice expensive brand new caty. Ask me how i know.Gotta clean with brush or walnuts not fun either way but to each his own. Thank you so much for the pcv system. Makes life so much fun... so much

[@denisgauthier3410]

Excellent video, all my questions and concerns answered. Well done!

[@factslogic5927]

honest, clear, and detailed. simply the best.

[@bobeden5027]

I worked for Orbital Engine Co in the test department where my job was to optimise the fuel delivery timing to combustion space using our two fluid direct injection system. The injector used two chambers . Low pressure fuel was metered by the lower chamber and the upper chamber was fed with high pressure air which was used to blast the fuel into the combustion space at the appropriate time for the particular speed and load. Using the air assist injection gave us control over the spray pattern and droplet size and playing with stratified charge enabled air fuel ratios as lean as 70:1. Had a great time mapping the engines! Transferred to the Tune Department and my job was to push the engine to it's power limits so basically I got paid to blow up hand built engines at$50k a pop! haha!

[@aarown1017]

I want to see a high mileage skyactiv brought into the shop and intake removed.

[@kapsgunner83]

Aarown1017 theory on my forum is occasionally rev the engine high and that would clean it. Search for BILD a German auto magazine. They rated mazdas as top 3 in reliability in many segments. The 3,6 and CX-5

[@mindspinn311]

Aarown1017 Skyactiv engines have air/oil separators. Mazda claims they have no intake valve buildup issues. I still wouldn’t mind seeing dual injection from them like Toyota.

[@jean-mathieuleblanc6226]

my 2014 CX-5 with 175 000km on it, canadian winter/summer city driven is still nickel. no issues. I use mobil extended since bought at 80k.

[@zzanatos2001]

Here's one with 50,000 miles on it. kzbin.info/www/bejne/qqnEp5ycj8x7rdE

[@sydesign768]

Skyactiv engines should have no problem according to another Savagegeese review. kzbin.info/www/bejne/iGjceZZ9l6ebbck

[@sunjoomoontube]

Real insights in such easy to understand presentations, big thanks.

[@justaviewer111]

Fantasic explanation. Everything about this video was awesome! I could have used some teachers like you when I was in school!! Thanks much!