Carbon Buildup Removal - RX7Club.com



Carbon Buildup Removal

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Old 09-28-10, 10:44 PM   #1
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Carbon Buildup Removal

I have searched, and found out that water seems to be a good cheap way to removing carbon buildup from an engine. Is it as easy as sucking it up from a vaccum line such as the brake booster while the engine is running. What are other ways of removing carbon I am open to all suggestions, the car is a 1987 N/A
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Old 09-29-10, 09:24 AM   #2
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never heard that way before

a good 3rd gear to redline blast every now and then should do it
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Old 09-29-10, 10:27 AM   #3
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The brake booster line only leads to the rear rotor.

Honestly, my advice is LEAVE IT ALONE unless you are actually trying to fix a problem. You could dislodge a big chunk of carbon which will cause major damage as it goes through the engine.
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Old 06-12-11, 05:07 AM   #4
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http://www.rotaryresurrection.com/3r...injection.html

check this link out u might be surprised...
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Old 06-12-11, 10:54 AM   #5
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Same warning as with any decarbonizing....You may cause unintended damage. For the record I've never done any of this stuff to any of my rotarys.
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Old 06-12-11, 11:29 AM   #6
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Dont use ATF, I have read by a really good source that carb cleaner works good. I have tried it myself by spraying minimal amount in the spark plugs holes when I had the apex seals aligned with the hole. It worked great
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Old 06-14-11, 05:14 AM   #7
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apparently some of the guys on this forum and my friends do what that website it talkin about, and they say it works great...
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Old 06-14-11, 07:06 AM   #8
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Mazda Zoom Power engine cleaner works wonders.

Step one is to warm up the engine,

Step two, disable fuel and spark, (disable spark by unpluging the Crank angle sensor)

Step three, remove a single rubber nipple ( Insert joke here) From the lower intake manifold, take Mazda Zoom power engine cleaner with extension hose inserted into port opening.

Step four with the assistance of a friend, have your friend hold the throttle wide open and crank the engine ( While the engine is still hot mind you) and spray cleaner into port, Spray cleaner for roughly ten seconds. After ten seconds, wait for thirty seconds, then repeat once more.

Step five, repeat step three and step four on rear port.

Step six, allow cleaner to sit in vehicle for an hour or so, be patient.

Step seven, re-enable fuel and spark.

Step Eight, crank engine and wait until it starts. ( This sucker is going to smoke badly for a few moments depending on the level of carbon build-up if any at all.) If the engine won't restart due to flooding, just disable fuel again and do a typical de-flood procedure on it

This should remove carbon build-up well enough. But I agree with Aaron Cake though, this is only as a last resort, the next step would be a proper rebuild.

I've used this stuff on my personal car and on Rx8's and it's brought back a few engines ( Including the one currently in my Fc) You can get it from your local Mazda dealer for roughly 35 bucks.

Anyway, good luck.

Last edited by Jdrift; 06-14-11 at 07:08 AM.
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Old 06-14-11, 10:50 AM   #9
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water worked great for me, I used the boost sensor vacuum line to suck in the water.
If you're going to use water just remember do it slowly
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Old 06-14-11, 02:07 PM   #10
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I just dump a can of Seafoam in the gas tank once a month. Can't hardly mess that up if you tried, and it works great...



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