Engine Carbon Clean -- still necessary?

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lsm1991

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lsm1991

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Has anyone done carbon cleaning on their car engines? Does it work? I was told in today's modern car engines, carbon cleaning is not necessary.
erm..... you could drive round without carbon cleaning so it was technically never ever a necessity but yeah carbon build up was/is a thing.

from what i understand some modern cars (di) do need some sort of cleaning (cough cough* bee em dabew, tiny, the peoples car, and olympics sans one ring) after certain miles... could be my anal friends tho
 

Izso

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Izso

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It's not needed la. Unless you were running super rich or had poor tuning done then you even less need it. You need a retune.

Drive hard and fast and it'll clear the carbon too.
 
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Mitevo7

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Mitevo7

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Depends whether you driving port fuel injected or direct fuel injected engine. Carbon build up for direct fuel injected engine will be at the intake valves, as fuel is injected directly into the cylinder, some gas blow by will cause oil gunk to slowly build up at the intake valves as we all should know, petroleum is a very good solvent and cleaner.

Unlike fuel port injected engine, the fuel is sprayed before the intake valves, hence constantly keep the back of intake valves clean. I don't see necessity for fuel port injected engine to do carbon cleaning unless you are very lazy in engine oil change and cleaning the throttle body.
 

scoupe

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scoupe

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just like Mitevo7 said.. hence y some manufacturers have the cleaning recommended under the maintenance schedule. Not all though. i guess one of the way to prevent too much gunk build on these GDI engines is to have a baffled oil catch can installed. As part of my own DIY routine maintenance i do clean out the throttle from time to time. and yeah i do have a catch can installed :)
 
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leinnz

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leinnz

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toyota SC force u to buy their carbon clean even though it is a new car
 

parakey

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parakey

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just like Mitevo7 said.. hence y some manufacturers have the cleaning recommended under the maintenance schedule. Not all though. i guess one of the way to prevent too much gunk build on these GDI engines is to have a baffled oil catch can installed. As part of my own DIY routine maintenance i do clean out the throttle from time to time. and yeah i do have a catch can installed :)
You have direct injection engine?
 

ixeo

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ixeo

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No pour in fuel tank or engine oil solution can help DI engines. Spray cleaners into intake manifold then yes it does.

But that’s a pain in the ass, especially if you hydro lock your engine.

The real long term solution is to install NOS or methanol injection. I guarantee your intake valves will be clean on your GDI engine.

Carbon clean is really bullshit. Use good engine oil. Change on time and occasionally use Caltex fuels when you’re almost empty.
 

Mitevo7

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Mitevo7

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No pour in fuel tank or engine oil solution can help DI engines. Spray cleaners into intake manifold then yes it does.

But that’s a pain in the ass, especially if you hydro lock your engine.

The real long term solution is to install NOS or methanol injection. I guarantee your intake valves will be clean on your GDI engine.

Carbon clean is really bullshit. Use good engine oil. Change on time and occasionally use Caltex fuels when you’re almost empty.
For my GDI engine maintenance, every 20,000 km i will spray intake valves cleaner through the throttle and in pulsing manner. Barely noticeable difference but the engine definitely revs quieter and less consume on fuel.
 
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ixeo

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ixeo

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For my GDI engine maintenance, every 20,000 km i will spray intake valves cleaner through the throttle and in pulsing manner. Barely noticeable difference but the engine definitely revs quieter and less consume on fuel.
Thing is, we don't know how effective is it. Walnut shell blasting confirm will clean it. But every 20k km need to do this, I feel is troublesome. Install meth or NOS hahaha. Tell finance minister is to keep it healthy, then boost
 

Mitevo7

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Mitevo7

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Thing is, we don't know how effective is it. Walnut shell blasting confirm will clean it. But every 20k km need to do this, I feel is troublesome. Install meth or NOS hahaha. Tell finance minister is to keep it healthy, then boost
The effort is collective, once you started cleaning at 20k km, then you have to be goddamn consistent in doing it. Walnut blasting is expensive as hell, chemicals are cheap plus labour is free when you DIY. Plus if your factory GDI engine is not equipped with stock oil and vapour separator, then you will need to install a oil catch can to reduce carbon build ups.
 
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ixeo

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ixeo

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The effort is collective, once you started cleaning at 20k km, then you have to be goddamn consistent in doing it. Walnut blasting is expensive as hell, chemicals are cheap plus labour is free when you DIY. Plus if your factory GDI engine is not equipped with stock oil and vapour separator, then you will need to install a oil catch can to reduce carbon build ups.
I can't install shit on my car else warranty void. lol.
 

Mitevo7

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Mitevo7

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I can't install shit on my car else warranty void. lol.
What's your car make ? Some manufacturer installed with something called oil & vapour separator to catch those blow by oil. At least my Volvo S60 has that one in place so the carbon build up should be slowed down. Just need to regularly clean the intake valves through the vaccum hose by spraying in those little can of GDI cleaner.
 

6UE5t

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6UE5t

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What's your car make ? Some manufacturer installed with something called oil & vapour separator to catch those blow by oil. At least my Volvo S60 has that one in place so the carbon build up should be slowed down. Just need to regularly clean the intake valves through the vaccum hose by spraying in those little can of GDI cleaner.
His car is one with the turbine logo, just like yours.