I use a number of different tools depending on the surface involved. Flex scraper works on ligth carb on & flat surfaces. I have a bent wire scraper, kind of like a scraper made of spring wires, that works good. Sometimes a roll-on pad on a drill can help too. If you can get to it a knotted wire wheel on a 4-1/2" grinder works good. I guess just about anything, but elbow grease is required for all of it. Not my favorite job!!
 
I took some piston and old coffee cans and set them in them with motor oil and just used a rag to wipe them clean the next day.
 
Are you talking about an engine?

Engine HOT and running, water/antifreeze mix sprayed directly into the intake.

When that mist hits that hot combustion chamber, it turns to steam and cleans 'er right down to the metal.

Allan
 
Allan,

Why do you use an antifreeze mix? Is it more aggressive than straight water?

I've used straight water, and also transmission fluid. I've never heard of the antifreeze mix though.
 
(quoted from post at 06:16:41 09/19/11) Are you talking about an engine?

Engine HOT and running, water/antifreeze mix sprayed directly into the intake.

When that mist hits that hot combustion chamber, it turns to steam and cleans 'er right down to the metal.

Allan

school teacher taught us that trick.... Looked like brand new pistoms, valves, and chamber of the heads......
 
If the parts won't be damaged by sand, I use the
sand blaster . Works good on cleaning the heat stove
in manifolds.
 
Allan Dad use to do the same thing but he used just water. You could see the carbon comeing out of exhaust. After he did that he would change oil.
 

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