Carbon Cleaning

[D.J.]

And I'm sure putting regular gas into a high compression engine during the dead of winter has it pulling timmings to prevent knock. I'd rather not take the chance.

What chance? We have low compression engines (10:1) with low pressure forced induction!

 

[Thomby]

And I'm sure putting regular gas into a high compression engine during the dead of winter has it pulling timmings to prevent knock. I'd rather not take the chance.

That would only be the case at high load/throttle/rpm. Timing is not advanced at low/mid rpm, and at partial throttle / low load conditions the car is definitely not doing any timing corrections.

You can pull up the JB4 UI or manually run a log while cruising around town to see how different the behavior is than the open throttle / high load conditions where octane becomes limiting.

 

[Paladin611]

Greetings,

I have a 2018 3.3 GT, and it has been nursed with top quality fuel since it was new. I have come to the junction where I am looking into a carbon cleaning of the intake valves, which has never been performed. My car has 63k on the odo and isn't used every single day. I'd say it is driven between 10-12k miles per year, and usually sits the majority of the winter. I've never noticed any loss of performance other that a time where I needed a spark plug change, so I am wondering what the level of carbon build up would be in my manifold. Is this a serious concern for the Stinger? I know that responsible maintenance would see that this procedure would get done, but I also know that the state of carbon build up on some Stinger's might be negligible. Has anyone here with a 3.3 taken apart their intake manifold and found a mess of carbon buildup on the valves and the manifold walls? Or was it relatively clean? How many miles on the car? Any insight on other owner's experiences with this procedure would be helpful to me. Thanks in advance.

Thank you all for your feedback with this. it’s much appreciated. For those who read this reply in time- Happy Thanksgiving!

 

[Bbrownjohnd]

So I have the same question as the OP. Alot of people are putting catch cans etc. I have no issue with that. However, I don't see much info from actual owners on how this particular engine is with carbon buildup. I understand the design flaw of single DI engines. But every engine is designed differently. For example the F80 M3 has extensive baffles in the intake to counteract this issue. The countermeasure was baked into the design. To say every single one is gonna have a problem is too broad for the scientific side of my brain. I'm curious if this indeed and issue with the 3.3t's

 

[Ohiocruiser]

So I have the same question as the OP. Alot of people are putting catch cans etc. I have no issue with that. However, I don't see much info from actual owners on how this particular engine is with carbon buildup. I understand the design flaw of single DI engines. But every engine is designed differently. For example the F80 M3 has extensive baffles in the intake to counteract this issue. The countermeasure was baked into the design. To say every single one is gonna have a problem is too broad for the scientific side of my brain. I'm curious if this indeed and issue with the 3.3t's

3.3TT - Intake valves manual cleaning.

 

[Bbrownjohnd]

3.3TT - Intake valves manual cleaning.

Thanks for sharing, it's clear to me, it's a problem on these engines

 

[BC00]

Here are some photos of valves and throttle plate. Got through intake manifold lambda place. Car has 70k miles. Quite much carbon built up is visible.

 

[D.J.]

Here are some photos of valves and throttle plate. Got through intake manifold lambda place. Car has 70k miles. Quite much carbon built up is visible.

Do you have before and after pictures, or only before?

Was the carbon build-up causing you any problems? Or just cosmetic if you look for it?

 

[BC00]

Do you have before and after pictures, or only before?

Was the carbon build-up causing you any problems? Or just cosmetic if you look for it?

This is the first time I am checking. Considering carbon removal with Browns (HHO) gases instead of walnut blasting, so want to have picture before and after. No problems yet, also running LAP3 tune.

 

[D.J.]

This is the first time I am checking. Considering carbon removal with Browns (HHO) gases instead of walnut blasting, so want to have picture before and after. No problems yet, also running LAP3 tune.

Do you think that the HHO method would be effective at all???

Limitations of HHO Cleaning:

HHO cleaning, which involves introducing hydrogen and oxygen into the intake to burn off carbon deposits, can help with general carbon buildup, but it's not as effective at penetrating and removing thick carbon deposits on the intake valves of direct injection engines.

Alternative Cleaning Methods:

For direct injection engines, more aggressive methods like walnut shell blasting or manual cleaning with specialized tools are often necessary to remove stubborn carbon deposits from intake valves.

 

[BC00]

Do you think that the HHO method would be effective at all???

Hard to tell. We would see

 

[ht_addict]

Here are some photos of valves and throttle plate. Got through intake manifold lambda place. Car has 70k miles. Quite much carbon built up is visible.

Hard to tell. We would see

How often do you change your oil. Seems like alot for such low mileage? Are in in stop and go traffic more than highway?

 

[BC00]

How often do you change your oil. Seems like alot for such low mileage? Are in in stop and go traffic more than highway?

How often do you change your oil. Seems like alot for such low mileage? Are in in stop and go traffic more than highway?

As KIA suggests in 6k intervals. Car rides more in a city than in highways.

 

[D.J.]

Hard to tell. We would see

I hope it worked well for you, but I wouldn't have high hopes.


Here's a good example of an HHO cleaning on a GDI engine..
Not my video, just something I passed by on YouTube. The whole videos well done I suppose. The results are not confidence inspiring.

 

[BC00]

I hope it worked well for you, but I wouldn't have high hopes.


Here's a good example of an HHO cleaning on a GDI engine..
Not my video, just something I passed by on YouTube. The whole videos well done I suppose. The results are not confidence inspiring.

 

[BC00]

After all decided to do walnut blasting. Here are some photos with opened cylinders after 70k miles. BMS catch can was installed only at 50k miles.

Does the "wet" carbon built up is normal for our engines? Should I be aware of oil leak?

 

[Paladin611]

Here are some photos of valves and throttle plate. Got through intake manifold lambda place. Car has 70k miles. Quite much carbon built up is visible.

Sorry for the late reply. Thanks for sharing. I’m getting my carbon cleaning done in the Spring. Based on all the responses I say it’s definitely necessary on the 3.3.

 

[SRV]

After all decided to do walnut blasting. Here are some photos with opened cylinders after 70k miles. BMS catch can was installed only at 50k miles.

Does the "wet" carbon built up is normal for our engines? Should I be aware of oil leak?

How much was the walnut blasting, and any pictures afterwards?

 

[BC00]

How much was the walnut blasting, and any pictures afterwards?

Here are more my posts at the end of thread.

3.3TT Thread 'How are Stinger owners cleaning their valves on their GDI engines?'

Mar 24, 2019

The dealer recommends to take your Stinger every 7,500 miles in for a fuel system additive to clean your fuel system. After some research I found out they just Techron complete fuel system. Now you can buy this at any part store or Walmart for like 6 bucks. I believe the dealer charges like 60 bucks for the service. So why not just buy the bottle and pour it yourself? I found out that thy also put some valve cleaner up the air vacuum to clean the air valves since its GDI.

What are you using to clean your valves? What procedure are you doing?

Please share your experiences. Trying to save...

• Angel
• Replies: 215
• Forum: Engine, Drivetrain, Intake, Exhaust Discussion

 

[ht_addict]

Since I run an OCC, I use it after cleaning it out, prior to every oil change to inject CRC GDI cleaner. Been doing it since I got my car.