How to clean intake valves on Direct/Indirect injection engines without using expensive tools

[@redbarchetta8782]

I ended up trying to clean carbon off the intake valves on my 74 MGB and had minimal success with any trick until I ended up trying a can of Liqui Moly valve clean. I soaked the valves overnight with the head at an angle and the next day it flaked off like it was dandruff. Liqui Moly valve clean is the best product I tried yet, and it works best in the gas tank. Use it occasionally and your valves and pistons will remain carbon free.

[@ttaborda]

What??😂

[@dmacarthur5356]

Liquid Moly is almost magical

[@termonostruman]

yes keep SELING THAT GARBAGE...

[@DiTV879]

Before I cleaned intake valve idle is 800 round per minute. After cleaned it, it’s 700 now. Although it’s not look like as I respect. But it’s worked

[@ΕλενηΓκέλη-σ2δ]

I do that to my Peugeot 107(211km) with positively result! Thank you Alimech!

[@AliMECH]

You're welcome! That's awesome, thanks for watching

[@ferrumignis]

Diesel? The 1.0L petrol engine isn't direct injection.

[@Rightchuare]

Thanks bro you gave me a great idea, I have an engine that I pulled out of my car and removed the intake manifold, I'm in a desert region in Southern Arizona so there's light debris and maybe light surface rust from moisture, I stored it outside for 2 years and ready to put it back in but wasn't sure about the best way to clean the valves and valve ports, thank you for this helpful information

[@AliMECH]

Glad I could help man, I like Arizona ✌️🇺🇸

[@kevinoneill41]

I would put shop rags in the valve port on the cylinder that the valves are open in. As a precaution to keep foreign particles out. Thanks for your time and this video 😊👌👍🇨🇦

[@AliMECH]

Great idea, thanks for watching

[@ericjames23]

Cheap harbor freight walnut blasters along with my small air compressor works perfect every time. From tear down to back up and running again only takes me about 3 hours. Using walnuts to blast carbon creates perfectly clean, brand new looking valve stems and cylinder head. Plus you don't get the gunky mess you get with chemical cleaning.

[@acogjefe4769]

Can you explain how to do it and what all I would need to buy please? I would appreciate it

[@Rayden440]

@@acogjefe4769First of all, you will need an air compressor the larger the better, but small ones do work. You will just have to wait longer for air to build up. Then you need to buy a “media blaster” it should look like a five gallon bucket or a metal tank. For the abrasive material you will be using crushed walnut shells, they usually come in 50lb bags. I recommend some way to shoot the walnut and use a shop vac to pull away the waste at the same time. Much less work compared to cleaning up after blasting.

[@acogjefe4769]

@@Rayden440 i appreciate you so much!

[@acogjefe4769]

@@Rayden440 could you please explain how to make sure my valves are closed?

[@Rayden440]

@@acogjefe4769 I can think of a few methods: 1. The simplest method is to just look at it, it’s pretty obvious which valves are open or close since you already have the intake off. They sell stuff like those snaking inspection cameras if your intake is toward the firewall. Or you can use light and mirror. 2. The second way is to take off the valve cover and look at the rocker arm and springs. The ones being compressed is the valve being opened. I won’t recommend this method because you will likely need to replace gasket, and may cause an oil leak from the head cover later down the road. 3. This final method is the most advanced. You take out the spark plugs and put a straight rod into the spark plug hole. It should be long enough to reach the piston even at bottom dead center. If you know the firing order of your engine, you can look for the compression stroke (that’s when all valves should be closed) by watching the rods go up and down. Remember to turn the engine over by hand and don’t use the starter.

[@deejaydixon854]

You know what's sad you are the only person on KZbin that I found so far that point out that engine degreaser's the best degreaser it's better than all that other stuff they're talking about and honestly I think if it let it silk long enough you don't need to brush it at all engine degreasers that good that drove strip the numbers off your microwave door

[@Darek80]

Really good job and amazing results. Unfortunately it's necessary for a most of new engines with direct fuel injection (gasoline). Sometimes it mandatory for diesel due to EGR works. Thanks for sharing your knowledge and I wish you all the best in New Year.

[@AliMECH]

Great point! Thanks for watching and merry Christmas

[@em4703]

EGR isn't that big of an issue, a leaky PCV valve + egr fumes is what creates the big deposits.

[@martinmuldoon603]

@@em4703 Yes I think your correct, I thinking of using a oil catch can coming out of PCV

[@denisimamovic3006]

5g😢

[@bm_wuratli6883]

@@martinmuldoon603 alot ppl crazy to use catch can not all engine are equal sometime they need catch can but rare *

[@الوليدالجهوري-ذ8ع]

يدك خفيفه واتقان ممتاز جدا عملك ناجح ومضمون وفعال انت مهندس شاطر

[@AliMECH]

شكراا لدعمك 🙏🙏

[@marksutton7085]

Great video, I have a Mazda 6 with exactly that fault it’s in garage now being fixed .

[@RafaelSilva-km2uu]

very good, here in Brazil we use alcohol fuel in flex-fuel cars, with two alcohol tanks the effect is very good, both for intake and exhaust.

[@randomhobby3729]

Mesmo pra injecao direta? Em compensacao a bomba de alta ta indo embora mais cedo ne

[@SirUncleCid]

Fuel doesn't pass by the intake valves in direct-injection engines

[@raulgcarvalho]

@@SirUncleCid correct! the only thing that can help to avoid this is reduce oil change interval.

[@harwoods11]

I use "Mr. Muscle" oven cleaner. I use it for this application and turbo vanes. Messy but very effective. Being careful not to wash too brake cleaner down the bores. Always use air blower to ensure no fluids are left in the head and replace the engine oil.

[@chriswalker4272]

Thank you, this has pointed me in te right direction to fix my friends 2017 polo with sticky valves and engine light, I'll be using Wynns petrol carburetta and valve cleaner with a dremmel pencil attatchment and the nulon brush attatchments and a tooth brush 🤞

[@edwardanthony7283]

Do that often enough the engine should last forever!

[@AliMECH]

Yes, for sure, I can feel so much power now

[@andrewregard7250]

I need to do this on my mazdaspeed 3. But I don't have any of the tools but this looks like it works well. I'll give it a shot before I go and get a media blaster. And deff +1 on making sure the valves you're cleaning are TDC.

[@Anēudís7]

what year is your mazda? i got a 05 maz 3 right now its idling bad its shifting bad too i was told the tcm and silenoid B is bad.

[@stoneyhoney]

​@@Anēudís7 tcm will come up as a check engine, but then again they mounted the tcms to the transmission which transmits too much heat to the module and cooks it! 500$! If you replace it I suggest zip tying it behind the battery up against the firewall that's what I did. I also have a rough idle, I replaced the valve cover gasket and while you're in there if you havent already I suggest replacing the solenoid anyways and/or the spark plugs if you havent. Trust me... you will have more clearance to work with and you dont want to do the same job twice. Check you coil overs look for oily residue around then as well, if there is replace them cause they're bad and will fail soon. They are expensive but just replace what you need. Do not use aftermarket. I've done all the trouble shooting for rough idle on my 07 mazda 3 I bought from the auction only code I had was a tcm but there has always been a rough idle. Besides the tcm, all the above said really helped with the rough idle and bogged power. Now, I really would like 0 rough idle so my last ditch attempt to nip this beezy is the intake manifold gaskets! With all that said trust me you will thank me later lol these are great cars and if we take care of them they will go forever I'm currently at 172k no codes, clean engine just a tad rough idle left. Let's do this 🤘

[@Anēudís7]

@stoneyhoney facts just did my engine wire harness bro when I tell you the amount of corrosion in all the silver taped up wires I cleaned up pretty good found a good bit of burnt and co-roaded on the colored wires. Been at it for 4 days now car has been sitting for a while it's time to get her back up and running

[@Anēudís7]

@stoneyhoney yes indeed awesome cars they will go and take you far I love getting under a hood of mazdas well depending on the year lol my car people be like "sell that ugly car" I be like "Nah you wouldn't understand my vision" and I'm always working on it they think I mess things up lol little do they know

[@Anēudís7]

@stoneyhoney also I wanna say God bless you Brother 🙏 I do have a crack on the head gasket definitely replacing

[@MarkShinnick]

Excellent experimentation and presentation, thanks.

[@AliMECH]

Thanks for watching

[@-paganless2-432]

Great job & straight to the point . Subscribed !

[@AliMECH]

Thanks, I always do, no time wasting

[@peanutbutterisfu]

A sand blaster from HarborFreight is like 10 bucks, some fine walnut media is like 25 bucks also from HarborFreight so for 40 bucks you can do it the way professionals do it and it is so much faster when you do walnut blasting then using chemicals and a brush. To top it off in the long run it’s cheaper using walnut you can do probably 20 four cylinder engines with the one box of walnut, when using chemicals it’s way more expensive plus it takes longer. Also some chemicals can swell the valve seals which will cause the valve seals to start leaking, obviously the chemicals aren’t in direct contact with the valve seals but you are using compressed air and the chemicals are on the valve stem so some will work it’s way up the stem. Anyways if you clean the valves up nice all you need to do to keep them clean is use a cleaner every 15k miles or once a year you want a chemical that sprays a light mist through the intake over a good 30-45 minutes I have a pressurized fuel injection kit that runs off compressed air and I have an attachment that sprays a very fine mist it’s so fine it’s almost like a fog and it run it before the throttle body I run it at a lowest pressure I can to where it’s still a very nice mist so it lasts as long as possible usually 30 mins or more and if u use a quality chemical it will clean the carbon deposits off the intake valve and the intake runner, if u do this every 15k or every year after the valves are clean it will keep them clean so u don’t need to do pull the intake to clean the valves. You can actually buy a pressurized fuel injection cleaning kit that comes with the same mist attachment that I’m talking about for 50-100 bucks on eBay. The kit I have is much more expensive but I use it every day and I’m sure the cheap ebay kit will work just fine for someone to use at home. If u have direct injection buy one of the kits and keep ur valves clean before you have a problem.

[@diegolainfiesta]

Even if you use the walnut blaster, you still need the chemicals.

[@Jet3ch]

Not everyone has an air compressor and you also didn't account for special vacuum cleaner attachment that is vehicle specific for the intake ports to suck up walnut media

[@traceygarza6588]

will it hurt the cathylic converter when blowing out the exhaust?

[@niloyu105]

Keep watching and support especially 45sec. Ads from Al Khafji Saudi Arabia 👍

[@AliMECH]

Thanks for your support 🙏

[@behzadshaygani7]

Thank you for the tutorial. Please tell me what substance you washed it with. What spray?

[@AliMECH]

Engine degreaser

[@remembergodisalwayswithyou6862]

Love from morocoo my friend ❤ merry Christmas.

[@AliMECH]

Thanks, merry Christmas

[@omayaali4157]

Is this cleaners are safe in the engine and valves seals? How can i change the valve from open to closed position?

[@remembergodisalwayswithyou6862]

@@AliMECH you're welcome. You to. God bless you.

[@Dolliehomee]

I use oven degrease product to soap n clean all that gunk out from intake manifold, works great!!!

[@AliMECH]

Yes I'm sure that will work so good, great information

[@GospelGary]

WD40 is NOT a penetrating substance; it is a WATER DISPLACEMENT solution, thus the acronym "WD" meaning Water Displacement.

[@chriswalker4272]

Indeed that is correct, however it is very good when cleaning aluminium engine parts for detailing with a ss wire brush.But carb cleaner is better or Spray Intake Valve Cleaner is better still.

[@inductor1.77]

It's pretty good at removing gunk though. It removes grease and adhesives quickly

[@aliahmad7766]

Excellent, good work. I have a question: Has the engine been washed with water?

[@AliMECH]

Yes, I always wash the engine

[@sakhtlaunda9360]

Thank you Ali. Wishes from India.

[@AliMECH]

Thank you too!

[@skjdhdh]

Some people use ac delco foam for cleaning and that cause engine problem...there is a new material for this from bluechem group...called k1 and k2

[@AliMECH]

I seen some foam products, but don't know how good they clean, u have to try it my self, but this method worked well

[@Cerebro960]

Excelente excelente hermano ésto lo tengo que hacer yo también. Te felicito.

[@AliMECH]

Gracias, saludos

[@kskate91]

I can feel my Hyundai accent needs this bad since it’s got a gdi engine. I’m gonna try this and clean the catalytic converters. Also how do you know which pistons are up and which are down?

[@omarguzman6788]

Hello Did you get the information?

[@omarguzman6788]

If you get the information Can you shared with me please?

[@josefranciscoesquertalaman3827]

Excelente 🎉 presente cordial saludo desde Navojoa Sonora México

[@AliMECH]

Gracias

[@Jayo-vq7dm]

Thank you brother. Very informative and great video.

[@AliMECH]

Glad it was helpful!

[@tonetracing9887]

Hola,con cuantos km hiciste la limpieza?

[@IssahakuNurideen]

Great job, but how did you bring out the diary out from the inside the engine, please

[@AliMECH]

It burns and comes out from Exhsust

[@sKid-ts7hr]

Can we oil the cylinder after this procedure? To make walls lubricated for extra care ? Oiling through spark holes

[@au1317]

It won't hurt anything if you don't use too much. Too much and you could hydrolock or quickly foul your spark plug. Just a few drops

[@MKaj-xq3px]

Great video. But I’m wondering, obviously one of the cylinders is going to be in the intake stroke and the intake valve will be open. All that cleaner is going to go inside the cylinder. How did you manage that so the car will start again since the cylinder may have a lot cleaner in it? Thanks.

[@MrBwetch]

Always useful videos ❤️

[@AliMECH]

Glad you think so!

[@Idan95]

Great video . Did you remove or moved the alternator in order to take out the inrake manifold?

[@michaelglynn2638]

Interesting video, out of interest how many miles on this engine please?

[@AliMECH]

I think now 120k km

[@liquidh5226]

Too much work for my Lexus IS250. Takes too much effort to remove my intake manifold... :( But as always, GREAT VIDEO!

[@seanlovi8798]

I have that engine as well only a 3.0.... that manifold is hell even when replacing the damn plugs

[@liquidh5226]

@@seanlovi8798 Exactly. I ended up paying someone to do it. Yours would be the 3GR-FSE

[@liquidh5226]

@mustarosvirsli My car is old and the plastics are cracking if I apply too much pressure. So I won't trust myself with such work. Not experienced mechanic.

[@twinturbocoyoteftw]

With the kit i use i save money because you have to charge extra to remove the intake. I'm done in 15 minutes and give a before and after with my bore scope to the customer. And it's 75 for gas 125 for diesel.

[@laylamkioskli1123]

Which kit do you use?

[@twinturbocoyoteftw]

@@laylamkioskli1123 I use a BG direct injection kit. It uses a pressurized cylinder with the cleaner being injected through throttle body tract while it's running. The key to getting it very clean this way is speeding the engine up around 1800 to atomize the cleaner over the valve stems and runners. I run a bore scope through the throttle body before and after for comparisons. It works great.

[@alexandersilvar]

Hi, thanks for this video. I'm wondering, I have a 2015 Kia Sorento with code P0303, a compression test was done and cylinder 3 it's 80 psi, the rest are at around 150. Do you think cleaning the valve can fix this? Thanks

[@AliMECH]

It's one of the big reasons to lose power

[@djoso559]

What about contact surface that’s what matters the most keeps them seated right.

[@ТимурСамитов-щ4э]

Thanks. What mileage was your car when you provided that procedure???

[@AliMECH]

120k

[@Official-bg1dt]

Nice information, thanx bro 🙏

[@AliMECH]

Welcome

[@EePingLiang]

You are the best!

[@AliMECH]

Thanks

[@DiHandley]

Excellent video! Thanks so much for sharing.

[@dodgersfnshepard8673]

Ballin! I wish you would have done some diagnostics or did an average of mpg per tank. I bet that helped a lot more than just head performance

[@AliMECH]

I didnt do that, but I feel so much engine power than before

[@robertrose3068]

I should bring my car to you and pay for yoyr service. 👍 Seriously...if in the U.S.

[@AliMECH]

Not in USA, but thanks for your support 🙏

[@pakoaheka1569]

What engine degresser do you use in this video?

[@teddysurf]

Hey, what about using like hoppes number nine gun solvent? I mean, that stuff breaks up carbon like crazy.

[@7edim]

does the type of metal of the engine head determine which chemicals you can use? Also do you think that engine decarbonisation does a similar thing, I know there is no physical contact there only a chemical reaction (I'm also gonna check and see if this is explained the other vid you linked with no contact cleaning)

[@michaelwolejszo6445]

yes it does, some cleaners will literally eat away aluminum blocks if not completely cleaned off with water

[@c.c7263]

How to turn the engine with a started to close the valves? Should we disconnect fuel pump and remove plugs or coils?

[@hellobalan1]

Can you share the link to the video about installing the oil catch can

[@AliMECH]

kzbin.info/www/bejne/jGa5fmxtjbqjZ7c

[@AliMECH]

Do you have any prove to show us?? because I have one, on my 2017 toyota camry and it Catchs oil in every oil change

[@toolzshed]

Awesome Video 🤘🏽

[@AliMECH]

Thanks for watching

[@nav5748]

How to know valves are in open position without open rocket cover ?

[@funnyboy408]

Can I do that in a chrysler 300?

[@AliMECH]

Sure

[@praddzzz]

Very good job

[@AliMECH]

Thank you! Cheers!

[@ardyajchannel]

How is silinder on outlander sport, any same?

[@nahid1981]

This is a great video

[@AliMECH]

thanks for watching

[@Yelladog78]

You do fine work

[@AliMECH]

Thanks

[@toomdoom8342]

Hello, you have closed the first valve, maybe the first and fourth are closed, and the second and third remain open. Shall we repeat once again closing the second and third valves, or not? If this cleaner is not available with wd40, can I use Ice Diclo instead? Greetings

[@TheOnlyRaceEngineer]

Great results. SUBSCRIBED

[@AliMECH]

Thanks

[@Spencer1609751]

Do you have a link for the yellow shop towels? Never seen them before!

[@sKid-ts7hr]

Hey bro i like ur videos i have dropped some depris while im removing the intake manifold what should i do how to remove the junk ? Any idea

[@AliMECH]

Thanks, Take the spark plugs out and If u try to start the engine, it will push all the dirt out from spark plug holes

[@sKid-ts7hr]

@@AliMECH wil this be safe ? Can i send some pictures to u in WhatsApp?

[@sKid-ts7hr]

@@AliMECH i sent a dm in ur insta

[@Dallas-GTR-86]

Absolutely brilliant 😁 I will try brother but I have a 2007 Toyota Prius hybrid Will need to take out

[@AliMECH]

Go for it you will feel so much difference

[@gentz8310]

Thanks arkadaš

[@lalit6m503]

Great info...❤️❤️

[@AliMECH]

Glad it was helpful!

[@markalan4026]

Nice work! 👍🏻

[@AliMECH]

Thanks for watching

[@Wakeupandsniffthecoffee]

Getting ready to do this on my PT Cruiser. It looks the same. Getting ready to buy some brushes. I won't use wire brushes. I'm not sure if there is a position that has all the valves closed at once. I need to figure that out.

[@Lugenfabrik]

If there was a position where all valves were closed at once it would be a pretty bumpy ride! 😊

[@wolfduranti8735]

let me guess? you from Poland 🇵🇱.

[@AliMECH]

Not really

[@jonwillso9640]

Nice work 👍

[@AliMECH]

Thank you! Cheers!

[@MaksUkr]

how to clean diesel intake? which cleaner to use?

[@frias2287]

Nice job🔥💯

[@AliMECH]

Thanks 🔥

[@frias2287]

@@AliMECH You're welcome friend, that's why we're here to support you.

[@AliMECH]

@@frias2287 it's means alot, thanks 🙏🙏

[@frias2287]

@@AliMECH 🤝🤝🙏💯

[@SirD31V1D]

How do we know which cylinder is in open position and which one is in close position after we remove the intake manifold? 2018 Corolla LE.

[@AliMECH]

You have to look at the intake holes, the open ones will be with intake valve down

[@Antonis_Skondras]

Is for diesel engines?

[@AliMECH]

It was for gasoline engine

[@hongwave-c1z]

great job

[@AliMECH]

Thanks

[@mobileterminaluzer1858]

WD40 is a great degreaser, carbon cleaner even though it's a water displacement fluid.

[@davea4037]

Great video, thanks!

[@AliMECH]

Glad you liked it!

[@lokeshvigil8497]

Lovely work

[@AliMECH]

Thank you! Cheers!

[@RJ6AV6]

Good video and information 👍👍

[@AliMECH]

Thanks 👍

[@theshuff]

what's the real impact of carbon removal on performance / compression / other ? from my side the only important part that should be clean is valve seat that cannot really be cleaned that way. is there any risk of damaging cylinders wall with introdution of lot of "shit" in the combustion chamber or do you manually rotate the engine to close valve beafore cleaning ?

[@James-rk6go]

CRC Intake Valve cleaner will work 1000% better than those other 2 cans lol

[@IkhsanND]

Very helpful

[@AliMECH]

Glad you think so!

[@ASReaky]

hi, after using the wd40, what did you use for cleaning the valve, im sorry im french so i dont understand very well. in the video i heard carp cleaner ? but it's injector cleaner right ?

[@AliMECH]

It was carb cleaner, and then I used engine degreaser

[@ASReaky]

thank you so much !

[@AliMECH]

@@ASReaky no problem

[@Luis-nm8mw]

Subscribed! 🙋‍♂️🙋‍♂️

[@AliMECH]

Awesome! Thank you!

[@aryezzadin934]

Please, how do you turn the engine?

[@AliMECH]

From crankshaft, or half startup

[@aryezzadin934]

@@AliMECH thanks bro, so how you do turn from the crankshaft?

[@jbone1383]

​@@aryezzadin934just remove all of the spark plugs & rotate the crank bolt in whatever rotation your engine runs 🏃‍♂️ It's usually clockwise unless you have an older Honda Accord or something weird so just verify 1st...also, you CAN leave the spark plugs in if you don't mind fighting against the engine compression and/or you're looking for a good workout!💪

[@wertyuutu9153]

Good afternoon, please tell me the link to the towels that you use.

[@AliMECH]

Tool box: s.click.aliexpress.com/e/_DE3m8zd

[@wertyuutu9153]

@@AliMECH yes no. I'm interested in yellow napkins.

[@shahzadsardar6003]

Tell me sir oil catch can is safe or not some people is say's engine damage oil catch can tell me plz

[@FarizAmir]

Great video! Thanks for your work!

[@AliMECH]

Thanks

[@naturoidz2714]

I'm thinking of doing this, but I don't have air compressor. Maybe, a compressed air in a can will work.

[@AliMECH]

Sure, it's, you can use it

[@mosesgalapate4840]

Hi ali, can you please make a video regarding automatic transmissions diagnosing and repairs, specifically with the solenoid valves. Thanks in advance

[@miguelcastaneda7257]

FYI problem with those valves is that subcontractor reduced tolerances from thousandths to tenths

[@skillz1855]

Excellent

[@AliMECH]

Thanks

[@SilkLotus]

How has the oil catch can worked in a long term?

[@AliMECH]

Very well, I didn't see build up like this anymore

[@SardarGulJabbari]

دەستەکانت خۆش بێت

[@AliMECH]

Zor supas

[@ClericChris]

Makes me wonder how well oven cleaner would work. It's been removing carboned cheese for years.

[@josiahgoodman1734]

Good job

[@AliMECH]

Thanks

[@nanami73_]

Nice video!

[@realdevbro447]

Is it ok, if the alternator gets wet?

[@AliMECH]

Yes, its splash proof

[@vikassingh9788]

Please guide me how make inhone degreaser at home which gave me better result

[@hevicex]

You add water inside with open valves?

[@richievellalar3214]

I love to try it but little scary... What if i do wrongly ?

[@yusufemran9651]

Very nice

[@AliMECH]

Thanks