The One Maintenance Service Every Auto Repair Shop Should Be Doing!

We’ve been wanting to do this video for a while now. For the longest time we were trying to figure out the solution for GDI engines and how we wanted to prevent carbon build up. We were doing the normal fuel system services but the after results just weren’t cutting it. We felt it was a waste for our clients. We then started using a special machine to clean them, but the machine damaged some catalytic converters (some of which was our fault) and they stopped making parts for it.
We had to come up with a solution. In this video you will find what we came up with. This service is not only profitable for our shop, but also a winner for our clients as well. They love it! Let’s talk about walnut blasting. Enjoy!
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We are partnered with AESWave. We've dealt with them for years and they are great people so please show your support to them! Our store link is:
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Yes we make commission on these products if you buy from these links. This supports the channel. We will never recommend a product that we don't truly believe in. This is just the beginning of our products. We will add more as we go.

[@tylerparsons9626]

Probably one of the most underrated shops on social media right now! Love the content you guys put out and the shop always seems well ran and well put together! Fantastic!

[@donaldmiller3064]

Love a shop that is all about quality

[@kauaiboy111]

Toyotas have port injectors to help reduce this type of carbon. Thanks for this video! ❤

[@lescarlock4405]

Just you tube surfing, and came across this channel! I do all my own preventive maintenance, on my 16 f150 3.5 eco! I just did my second walnut blasting, at 88000 miles! First time at 68000, and thought nice day to just take a look at the intakes! They weren’t really too bad, like they were the first time, but it sure didn’t hurt to clean them again! I do oil changes at 3000 miles! Oil life shows usually 53-57 percent Life left! When I first got the truck, it had 33000 on it! I trusted that oil life! Until I started writing down mileage! Found out I was putting on 7500-10000 on that oil! For an old man,(71) it’s not real easy to climb around that motor, but at least I know what’s done! I’ve changed all drivetrain fluids, coolant, brake fluid, I rotate the tires my self! Oh, and I do have oil catch cans on it also! Thanks for showing before and after pics of those intakes! Great video!

[@andrewnevermind4902]

You take better care of your motor than i take of myself.

[@georgeanddaddecker7563]

Walnut blasting is the most effective. Leave combustion chambers looking like new.

[@billmonroe8826]

It seems with this problem the manufacturers should figure out something better because aspirated engines don't carbon up.

[@jdtractorman7445]

The problem is with direct injection vs. port injection. Port injected motors don't have these issues because it puts fuel at the back of the intake valve, thus keeping it clean. Direct injection is directly in the cylinder. With no gas hitting the back of the intake valve on DI motors, you have bad carbon buildup. @@billmonroe8826

[@lynxstarautomotive208]

@@billmonroe8826Rhey have started to play with the timing tables, and have managed to help cut down on the carbon build up a ton. Mercedes Benz doesn’t have this issue. You will find some of their engines with over 100k and minimal build up.

[@loveandbaconbrian1901]

To answer your question I’d say a video on anything you do which has a special twist to it from most shops - which so far seems like everything! What a clean, professional operation… And your kid’s night is truly inspiring. Thanks for the great content and for raising the bar!

[@seanshute9284]

The slight camera pan to catch Clayton eating his banana 🍌 😂😂😂😂😂😂😂😂😂😂😂 You guys are the best, informative, professional, and now hilarious.

[@carlosmberrios]

😂

[@1983dmd]

Yes, I would like to watch you when fixing cars , anything is interesting, with all the details w/o skipping steps and explaining all the way.

[@garyhennessey3621]

Yep nothing like a Toyota. Use shell gas and Techron occasionally. It works and keeps things clean.

[@nathandavis931]

This blew my mind a bit. That’s cool!

[@mshaw290808mi]

This issue is one of the main reasons I bought a RAV4, Toyota added GDI but left port injection so the valves would get sprayed with gasoline keeping them clean.

[@lucassutton5539]

Repair videos and shop stuff for sure, thanks for your videos and keep up the good work.

[@gilmertime14]

We have had very good success with the BG Platinum Service. An often overlooked service and usually due to lack of educating the client.

[@ericl8593]

That’s what I was inquiring about using a chemical clean as a preventative maintenance option

[@Mr2004MCSS]

I like all of your videos so anything you put out is fine by me. Someone can always learn something on any procedure.

[@jamesb7224]

Repair videos would be great. All of your videos have been great

[@hoyinwong]

Your videos are excellent ! Whatever you want to shoot, we want to see. Diagnostics, repairs in progress, your "thinking process" when trying to figure out particularly difficult to determine problems, and yes, tips for shops to consider that will improve their customer satisfaction and their profits. Will love seeing it all.

[@mikesabin8568]

Love the channel!! Gdi injectors diagnostic is what i would like to see more of. Scope and non scope techniques if possible

[@theroyaltyautoservice]

We've got a new tool that should be here in the next 6 weeks to do some testing on GDI injectors. I'm excited to play with it and will definitely make a video using it.

[@KGauto_Diagnostics]

Is it the ADDi? I ordered one couple days ago after I watched the demo on Super Mario's channel.

[@BeingInTheMessiah]

FOr future videos I think your viewers would enjoy, as well as your employees, kind of a "this is how the shop operates, but it wasn't always this easy, this is how I got into automotive repair" Include personal development alongside just the nitty gritty. People need to believe they can achieve great results in their career like you guys.

[@johnyoung4466]

Great video! I really liked seeing the full process. Thanks for sharing!

[@jasonemeric9902]

Just saw this not long ago on rainman Ray's channel too. You guys were way cleaner lol. Really amazing how well it works.

[@toddmaersch7200]

Really like videos on diagnosis of running issues/ electrical issues, etc. How to's on becoming a better diagnostic technician.

[@friedrichpsp]

Mazda also recommends this, not sure of the mileage or if you guys have seen many 2.5 Turbo GDI on CX-5’s to know when to consider this. In fact I don’t think I’ve seen a Mazda much less a CX-5 in your videos. Absolutely needed service.

[@parkerassociates9864]

Yes on repair videos and shop operations. Thanks.

[@ysitrim88]

Awesome that's how i do it. Definitely makes the engine run like it's new. On and i want to see more repair videos 😊

[@bartscave]

I like the diagnostic videos the best. Thanks for sharing your experience and time.

[@richardchapman3489]

Wow that system really cleans good

[@djosbun]

Currently $358 on Amazon, which will pay for itself after two jobs.

[@AR-il9gk]

2 jobs? Man most shops charge 800+ for this..euro shops well over $1000

[@meanodustino9563]

I do use CRC intake/turbo cleaner. It works great. Do it to my acura once a year and it runs great all the way through.

[@mikemartinez661]

Learned something new about gas thank you mate.

[@napkins13]

I would be interested in both concepts of videos. One where the mechanics are filmed, and diagnostics. Thanks as always for the useful info

[@truthmatters5000]

You sold me on it. The benefits are nice. I will share with my boss.

[@CalAdkins]

I started using Amsoil PI additive every 5000 miles to try and prevent this and keep clean.

[@nickb1488]

Great job!! Thanks!!

[@buddaclayton9292]

I use seafaom gdi cleaner to clean my valves at home. Its worked great. love ur videos

[@redForever1776]

would like to see both diagnostics and repair vids. I love the diag vids and perhaps keep most vids diag vs repair

[@luisdaluz4686]

Performed walnut blasting service on several Honda fit's with GDI very common for cold start misfires when cold, just a heads up.

[@gflores7018]

Good to know Thank you

[@naohastress]

Awesome video

[@doomkid02]

Good thing Toyotas use both direct and port injection on their engines!

[@jeffreym755]

Ok great video, you sold me thanks

[@kevinbosse8866]

You guys should make a diagnostic video of a misfire(s) related to this! Always wondered what they look like on the scope

[@pariskennard4540]

Thank you for your videos 💯💯💯💯💯💯💯

[@Duffling]

Would love to see how you run your shop and watch yous repair vehicles

[@TommyG11814]

Glad my Venue is 1.6 NA with multi port.

[@sidroniorodriguez3540]

Great channel, I think doing videos off that you mentioned (working on vehicles, running the shop, etc).

[@FistingAllNightLong]

Love your videos. I think more repairs videos would be great. But your informative and diagnostic videos are extremely insightful. Keep it up, thank you!

[@donaldmiller3064]

Like your dog

[@davidcampbell1899]

So, its basically $800.00 to $1,000.00 to do this! Thanks to a bunch of Engineers that can keep things simple!

[@DarthDonPedro]

What I like to see videos on the step by step process on moonroofs , seat tracks tear down, lift gate motors and sliding door motors and replacement of evaporators. There not many videos out there on steps and tips for this.

[@papashangosdong]

Autool makes some great products for a great price.

[@user-ve8mx3zi6k]

From the looks of the comments, any of the potential topics mentioned would be well received. Being on the diagnostics/electrical side of things, some ADAS episodes could be interesting. Thanks, Al H.

[@ryanmac7377]

imagine the person who thought, hey i bet these walnut shells would work to clean those valves. That guy must live outside the box lol.

[@lynxstarautomotive208]

Media blasting has been a thing long before direct injection came into the picture.

[@Loulito]

Okay, I've never seen that before thats NUTS! HAAAA! no but seriously never seen that before that before and after is night and day! incredible! I would be jumping for joy if I were the owner of that GDI, I hope you sent them this video!

[@martinarrieta248]

Grasias

[@jeffhudson1744]

would like to see diesel work also. repair videos would be great.

[@xxdaemonarchxx3436]

First! Keep diag videos coming for sure.

[@dougbackstein2937]

I was doing this on bmw about 12 years ago and buying it from Harbor freight

[@robertedgemont]

I would like to see more repair videos please. Also, what brand fender covers do you use? I like those longer ones.

[@danpereira6009]

Process and procedure of scheduling and work dispatch would be cool Do you guys do waiters ?

[@davidcraven277]

A few years ago I worked with a company that was testing an air filter oil catch system in line for the pcv it worked quite well I haven't seen it production yet

[@garyganser2451]

What about a catch can? Mine has a metal honeycomb as a filter.

[@davidcraven277]

@@garyganser2451 that would be great option

[@kingofkings2934]

I never had luck with the vacuum set up need to be able see what im doing i tape the engine bay with plastic film put a face shield and gloves and go to town😂

[@renemendoza5620]

Make repair videos, with explanations of what the customer stated,and how the problem was diagnosed, it dont have to be full diag, just clips of the process with a quick overview of the diag., well atleast that's what I would like to see

[@djmobileauto]

I just upload a video explaining this same issue. The carbon build up is really harsh and create alot of misfires due to lost of compression issues. Great video as usual Mr Sherwood. The Autool HTS work really great. Thanks for sharing.

[@atticstattic]

What if my car has a nut allergy?😊

[@theroyaltyautoservice]

That's a bigger problem. Haha

[@user-zs5ey8xs9n]

I’ve seen dry ice being used I would think it’s more expensive

[@aciddiver1978]

This is why i went back to port injected car. And adding liquimoly valveclean once in a while.

[@atticstattic]

What vehicle?

[@aciddiver1978]

​@@atticstattici had opel insignia (buick regal) gdi 2018. Went back to Opel mokka (buick encore) 2013. Buicks are Opel in europe.

[@atticstattic]

@@aciddiver1978 I bought a 2016 Chevy Trax because of that

[@justobey733]

I want to see this intake cleaning on an alfa Romeo stelvio. 2.0 L

[@ericl8593]

Do you recommend the chemical clean as a preventative maintenance once a year to keep build up from happening ? I understand mechanical cleaning is best and I would have concerns of using chemicals in the intake ! What’s your thoughts ???

[@jrock-xs9vp]

Some repair videos would like to see especially those pain in the ass cars .

[@809nel]

I heard now you can also dry ice clean valves, dying to see it in action.

[@theroyaltyautoservice]

I've checked on it. It's quite expensive to purchase the equipment. Hopefully the price will come down because, from what I've seen, it's awesome.

[@user-il2kk8lo5k]

What grit walnut shells are you using?

[@snooketcher]

Where was this in the CAFE equation?

[@jeremystone6613]

I’m curious about your comment “the technician gets paid well”. Shops in Australia work on an hourly rate system-eg 8 hours a day with penalty rates added for overtime hours. I’ve always struggled to understand how it works in the States. Does the tech get paid by the hours charged out per job to the customer thus incentivising more efficient work practices? What happens with comebacks and quality if that is the case? How do you pay for road testing and diag time and research?

[@theroyaltyautoservice]

That might be a good video. Let me see what we can do. Thanks!

[@charlesabbott9605]

What's the approximate charge for a four cylinder GDI engine? Thereabouts or a range? One similar to your video?

[@theroyaltyautoservice]

We charge labor to R & R intake plus .5 per cylinder to clean.

[@lrmastertech]

Outside of the labor time to r&r intake how much time are charging for the cleaning portion?

[@theroyaltyautoservice]

.5 per cylinder.

[@bobherweg6442]

Could the chemical type treatment get chunks of carbon in your turbo?

[@theroyaltyautoservice]

It shouldn't.

[@maskemarr2615]

What if you have oily residue on the valves and surrounding area?

[@theroyaltyautoservice]

That could be cleaned with chemicals. Induction service.

[@hklilly4854]

I thought you would compare and contrast to Bernie’s oil and gas treatment to remove the buildup.

[@unebonnevie]

GDI engines are just horrible designs! Car manufacturers make sure their cars die within five years of such design, so the people would buy new ones!

[@theroyaltyautoservice]

I think a lot of the problem is they are up against it with the full mileage regulations.

[@Hellcat71782]

Politicians want better fuel economy yet they hurt these cars in almost every other aspect.

[@mgallypapi7552]

The idea of direct injection is an incredible idea everything is better, fuel economy, power, efficiency and reliability, IF you get them to operating temp. The biggest issue I’ve seen is grandmas and people who don’t enough don’t get the fat hot enough to burn off that carbon. The fuel being injected into the system should be cleaning the cylinders as it runs itself. GDI Motors are not meant to crank up go to the gas station for some snacks and come back home and sit. All your doing is leaving carbon deposits and unburdened fuel in the cylinder.

[@Hellcat71782]

@@mgallypapi7552 I mean technically no car is made for that. Short trips can hurt any modern car

[@LoneWolfSparty]

More manufacturers need to figure out how to put port injection with direct injection. Toyota/VW have it (VW in Europe does), I think Ford does now too. It nullifies the carbon build up issue that GDI engines have.

[@JohnAsang]

At my dealership it is R/R intake time plus 2.0 for four cylinder and 3.0 for 6 cylinder and 99% of customers decline this service. I have seen intake ports 60% clogged with EGR and PCV build up and still after photographic proof the customer decline.

[@Delorean_Guy]

I get why people decline, big money for something they don't see. But 3 hrs to blast out 6 intake ports that take about 5-10 min each? I get the R+R time, but an additional 3 hrs at how much an hr?

[@JohnAsang]

@@Delorean_Guy that is what technicians in large dealerships don't know. Tech's rarely see the money side. and like I said it is a low volume seller. I have done 10,000 sets of warranty injectors and just tried to get the added time to walnut blast the intake ports, NOPE, If it's not free it is not for them.

[@Hernsama]

TOYOTA😊

[@Louie88]

What happens if you don’t turn the motor over to close the valves and use this Walnut blaster ? Or if one valve was slightly open ? Just curious if someone did this and what happened

[@theroyaltyautoservice]

That wouldn't be good. But you could probably suck out the walnut shells thru the spark plug hole.

[@inspiredx3866]

It's mind boggling very smart engineers design these motors that need the intake taken off a few years later from new to clean carbon build up....smh

[@swav100]

At what psi do the walnuts shoot out

[@theroyaltyautoservice]

I'm not really sure.

[@mechboy5954]

There’s another mechanic on KZbin with white hair that’s becoming very popular lately, however I think he’s nothing more than a silver tongued devil. Sherwood is a certified technician and may even have a background in engineering.

[@thekeeneygarage]

business videos would be cool

[@robertscott7537]

Where can I get the walnut blaster?

[@theroyaltyautoservice]

They sell them on Amazon.

[@zaraahmad5618]

when is ac part 2 is coming?

[@theroyaltyautoservice]

We are working on it, I promise.

[@mechanknuckle]

How do you feel about chemical blasting into throttle body every oil change? Would that helo keep the carbon from building up?

[@theroyaltyautoservice]

Maybe if that was done from oil change number 1. It may work better on some engines and not on others because of the intake manifold designs. That's what's so difficult with this problem. So many different engine designs with the same problem.

[@lynxstarautomotive208]

You need to be very careful with the chemical cleaners. VW does not approve this method, and I have seen many engines damage exhaust valves thanks to the chemical process. Just good for thought.

[@bigjay1970]

And people complain about Honda's J series engines needing timing belt changes!🤔🤯😳

[@ericl8593]

@@lynxstarautomotive208 just curious how the chemical cleaning would damage exhaust valves ? Aside from dislodging carbon and possible bending a valve but at that point piston rings , bore finish and valves are all at risk ?

[@raymondcanessa7208]

Does this happen on Toyota?

[@mandytuning]

If is only gdi then yes, if is combined port and gdi then no

[@KGauto_Diagnostics]

Love my Autool walnut blaster I push it with any tune up service. Sherwood amazon has a seal for the VW intake holes that's like 10$ fits them perfectly and works better then the Autool adapter

[@theroyaltyautoservice]

Thanks!!! I just ordered a couple of different ones.

[@daveunbranded]

Wby can't they use ice blasting. You would have to worry about the walnut dust.

[@theroyaltyautoservice]

They have a dry ice method but the equipment is prohibitively expensive. Hopefully in the future the price will come down.

[@cocoabeachw7626]

What does that cost ?

[@theroyaltyautoservice]

Intake R & R plus .5.per cylinder..

[@NoWay-ye7yq]

How much does this service cost if not a secret?

[@theroyaltyautoservice]

R & R Intake plus .5 per cylinder.

[@NoWay-ye7yq]

@@theroyaltyautoservice I am thinking of getting a new car but seems more and more service is involved with new cars and its just more money

[@briand7238]

Do a new tool Fridays

[@emerson7013]

I know you mentioned ATS chemicals which i've been using the last month or two and i've seen the big help in volkswagen motors on consuming oil. What is your experience with using the ATS Poor in chemicals fuel and oil?

[@theroyaltyautoservice]

They are absolutely fantastic!! We use them all the time.

[@TheMB2333]

I thought this was going to be a BMW's owner's manual.

[@qmccall0328]

You didn't answer the price question. You danced around it.

[@1marcelfilms]

Im never buying direct injection engines

[@ADUSN]

Good oil change intervals, good fuel, and not buying garbage Korean cars makes this a non issue imo

[@GAH4444]

Try telling that to a diesel engine

[@zevlovef]

lol that korean garbage is still miles better than VAG junk from Germany