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Decarbonizing your rotary, (performance/maitnance)

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Old Jul 29, 2010 | 05:54 AM
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Default Decarbonizing your rotary, (performance/maitnance)

Some of you who have done something similar to this have noticed improvements in driveability and performance. Some of you havent done this yet.... For those that didnt know, or werent sure how to do it, here you go.


Seafoam is the preferred method of carbon removal, and it will not cause an engine to blow after use. It's very effective and gentler on the seals than the old ATF that has been used for many years. Regular use, i.e., a can in the fuel tank with each oil change is a good maintenance practice.

With high mileage and heavily carboned engines, there is a risk of cleaning out enough carbon that the engine may end may allowing more fuel/oil injected mix to bypass the worn oil control o-rings, producing more oil smoke in the exhaust. For those engines, they were near terminal to begin with as the carbon build up has been masking/sealing worn components

I've found that after the treatment, since the engine usually runs better, an owner may tend to push it harder with the new found performance and that's where engine failures arise from. There is the odd chance on a heavily carboned engine that the treatment may loosen large chunks of still hardened carbon that may catch and break an apex seal.

For this reason, if this is the 1st decarbonizing treatment in many years/miles, it's best to introduce the Seafoan through a vacuum line and allow the engine to set for a day or two, thus allowing the Seafoam to thoroughly soften all of the carbon. For this process,I recommend sucking up 1/2 can of Seafoam at idle at a fast enough rate to kill the engine. Let it sit and soak, the use the 2nd 1/2 can in a slower ingestion to help pull out the remaining carbon.

I sometimes follow up with water pulled in through the same vacuum line to clean the rest of the remaining carbon out. Inside a combustion chamber, water will literally steam clean the inside.
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Old Jul 29, 2010 | 07:04 AM
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i like the steam clean trick with water never tryed it thoe
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Old Jul 29, 2010 | 09:09 AM
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thanks for all da advice u gave me kno my brain hurts and i still dont understard carbs lol but i think ill try the seafoam and steam clean cuz my car does run low compression on da rear rotor
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Old Jul 29, 2010 | 09:53 AM
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if the seals are sticking, the clean will help to unstick it... if its not sticking.. the clean isnt gonna help anything but clean the parts. itll still run like shit
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Old Jul 29, 2010 | 10:48 AM
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well im kinda low on budget 15$ all together so ill start it den spray water down da carb like it says
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Old Jul 29, 2010 | 10:51 AM
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^ thats why so many people like using water... well and that they claim it works. Im a seafoam fan myself, but will be doing the water this week.
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Old Jul 29, 2010 | 11:07 AM
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well ima do it now let hope for da best tell u how it goes
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Old Jul 29, 2010 | 12:49 PM
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red line it daily.
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Old Jul 29, 2010 | 01:04 PM
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naw it sounds worse like theres something really rong wit da motor ima leave it alone
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Old Jul 29, 2010 | 08:04 PM
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make sure you use destilled water though regular tap water has chemicals that turn sticky when turned into steam that will stick in ur engine if you ever used a iron on ur clothes you will know what im talkin bout how the bottom of the iron gets all nasty with that shit
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