Do You Really Need to Carbon Clean Your Engine? Let's Find Out

I use a heavy duty fuel injector cleaner with UCL and PEA. I put it in every other tank so that it does not build up to unsafe levels. I use the type that is for all fuel types. Gasoline, Diesel and E85. I think this type is more stronger, than the type that are just for gasoline fuel alone....and I also run a oil catch can in my PCV system. You'd be amazed at what an improvement they can make for your engine over time. My 2003 Jeep with 300,000 miles and a rear main seal leak runs like a top once it gets warmed up.

I’m not going to buy any Korea stuff. Constantly hearing about recalls and easy to steal. Ford DI engines have same intake valve issues. But most Ford experts say 10-12K miles de carbon the intake valves. And change the oil right after. My experience and 2 cents.

Hey, Scotty, which are better? KIAs or Toyotas??? HAAAHAHAAAHAAA!!!!!!!!!!!

Scotty does not like Kia's, Mine is a great running car, the 1.6 liter develops 130hp but feels like more.

As you indicated by the engine stalling when spraying in the cleaner, this car uses engine vacuum for the brake booster. However, my 2011 Sonata has a separate vacuum pump for the brake booster. Spraying the cleaner in the brake booster's vacuum hose on my car won't clean the engine. Just something for folks to be aware of. I don't know how many different cars this would apply to, but probably most cars with turbochargers, since they don't have the manifold vacuum needed to run the brake booster.

Scotty I suppose this method works on my 2014 diesel Toyota Prado.

how do i calculate 7Litres per 100km in mpg?

My friend has 2018 Hundai Santa Fe bad oil consumption! What to do? Adding oil ALL the time. Now running ROUGH. Afraid there is no fix.? It's a GDI motor.

I need to decarbonise my converter

That Hyundai engine sounds like it’s going to blow up again. That rattle 😮

What about EGR?

Do you really need gdi service? Do you own a gmc Acadia? Then you sure do!!! Ypu will also need to change the fuel injectors at 75k miles.... just like I had to do. $2200 later ypu will think differently

VERY GOOD SCOTTY BUT WHAT ABOUT PEUGEOT ENGINGS THE PIPE IS UNDER A BULK HEAD

Scotty.... what about fuel injection cleaner for GDI to help keep the carbon off the rings? Won't that help?

My ex annoyed me to get rid of my truck that I loved and replace it with a KIA Soul(less). It got decent fuel economy and it was ok for in town driving only. The interstate was an unbearable cat-faced nightmare because even light winds felt unsteady.

My breaking point was the insane insurance premium hike based on KIAs reluctance to install anti-theft measure except in the brochure. Subsequently Chicago is filing a class act lawsuit based on the manufacturers intentionally absent security feature combined with how easily these are to steal.

I find Scotty’s videos very helpful. But I would be cautious when doing this procedure. I’ve done this on my 2018 Elantra Sport, sprayed seafoam down the brake booster vacuum line, and it absolutely destroyed my vacuum pump. Dealer could not figure it out. Opened up the pump and it was literally crumbs. Had to diagnose and repair it myself with vague forum posts and a $500 replacement pump.

Years ago, when your car was parked, then it rained over night, water condensed on the ignition wires and the distributor cap. You go to start it and it misfires like crazy or won't start at all. That's not such a problem with today's cars, but I suppose the beauty cover is suppose to protect from all that.

Scotty you got a new subscriber in me you explain so good that I think every video is worth it, I buy a 2007 Lexus is250 awd with 1600000 miles for 6K, it runs smooth and shift like a new car what should you recommend to me right now, where I can do a Carbon Clean? You recommend to do it? Have a blessed day and blessed life. 🫶🏻

Yes you do need to clean your valves

Just did my Kia soul.Whew,the smoke it made.

Wait...Scotty said on one video to never use engine carbon cleaner!

Now how do you do this with a GDI hybrid? I rev, nothing happens lol

So, all the carbon (bits & pieces) cleaned from the intake manifold are now clogging the catalytic converter...engine will soon need rebuilding again as well as a new cat : ) : ) : ) Great Scott!

Watch this video at 2x speed lol!

I have a 2016 Forester XT direct injection fuel system. It has 40K miles but I bought used, so I do not know if Subaru dealers did this clean on the regular maintenance schedule ( car has been serviced regularly on dealers till today ). My question is, do I have to clean the carbon on a 40K miles car if I don't know if it was previously cleaned? Because some people say that it could have a lot of carbon so maybe it will be a good idea leave it as is and not to liberate that already sticked carbon.

perhaps also useful for carbon on the pistons, comb chamber- w a good soak?

Could you imagine being in the back seat of a Scotty and Joe Pesci road trip.

Replace the cat 😂

Looks like a vacuum check valve he's spraying that cleaner through...if rubber seals or neoprene, cleaner might deteriorate seal, then valve doesn't hold vacuum on the brake booster so if engine dies and you still need normal soft brake pedal, you'll now have a hard as a rock brake pedal when engine isn't running for whatever reason.
Also, stalled engine with the cleaner?
Washing down the cylinder walls accelerating rings & pistons wear much?

It looks like a toaster...lol I like your content ty

if you notice on kia's scotty always blames kia for the engine for failure. when it could have been the 1st owner could have abused it

Can I do that on a 2022 Subaru WRX?

I've soaked valves in Cleaner like this when doing engine rebuilds and it takes days to dissolve deposits completely
Without a bore scope to take a look before and after I doubt more than 10% deposits is removed this way.

❤ I own a 2012 Kia Soul with 100,000 miles. I need to do something it burns oil.

As usual... very entertaining.

I have a 2014 kia forte with 185k miles on it no major issues other than had to replace cat 1 time due to way overdue spark plugs, should i be worried

Whats GDI system?

I'd not drive a KIA or a Hyundai if I got one as a gift. Talk about crappy resale value!

They do this service at dealerships for over 100.00 .it's also done at Walmart for around 30.00....it does work that's a fact.

Re: Miliage. If a car that has been properly maintained can not go at least 350,000 miles (without an engine or trans replacement) or last 75 years in age...its a piece of crap.

Do an easy clean on the Volvo pcv System... Somehow 😂

my 2013 has 230k on it now

Would it work on a 1992 Toyota Corolla? Lots of carbon build-up.

Toyota has been using GDI engines in the Camry, Corolla, and RAV4 for years, so Toyota is also a cheap, crappy car as you said to Kia. Volkswagen, BMW, and Mercedes-Benz, which also use GDI engines for many years, also make and sell cheap and crappy cars.

The problem is the car owner who doesn't do Intake Valve Cleaning on a GDI engine, so how can you claim that GDI engines have all the problem?

Why do you change the engine oil every set period or mileage? You're the kind of person who would blame the engine for being cheap and crappy when, after driving tens of thousands of miles without changing the engine oil, the engine broke down and exploded.

This guys funny...but knowledgeable, he's got almost 6M subscribers... thats pretty impressive!

Will this work for 2016 chevy impala with 3.6 its DI VVT?