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Water Decarbonization
millenniumtree - 5/6/07 at 06:32 PM

I have heard that you can decarbonize your cylinders by sucking water SLOWLY up through a vacuum hose while the engine is running. (2-3000 rpm)

Has anyone tried this? Some other forums on the subject seem to claim miracles.

The general theory is that it "steam cleans" your cylinders and gets all the carbon gunk out of them.

With how rich my truck was running, I'm very tempted to try this!

blakep82 - 5/6/07 at 06:42 PM

steam cleaning maybe, but with the engine running, wouldn't that just mean and hot water would just be thrown out (i assume you mean to put the vacum over the spark plug hole?)

some redex down the cylinders seems a better, tried and tested idea.

martyn_16v - 5/6/07 at 06:54 PM

I've heard this before and it does seem to make some sense, I have seen how clean a cylinder can get after water gets in from a HG failure. Just make sure you take it in through a suitably small vac pipe (just 'sip' a little bit), too much won't make for a happy engine

davie h - 5/6/07 at 08:11 PM

a guy i worked with used to use this on diesel generator engines as the used to glaze up due to running at the set rpm he used to rev the engine up and pour a little bit of the powder into the inlet manifold and it would clear up the blue smoke

ps i have never tried it myself

blakep82 - 5/6/07 at 08:16 PM

slightly different, but is it true that if you put a pint of diesel in your engine oil, it cleans everything up lovely in the oil ways etc. I think you can leave it in there too, but i don't know, so don't go trying it and blaming me when it all goes wrong

locogeoff - 6/6/07 at 12:39 AM

quote:
Originally posted by blakep82
slightly different, but is it true that if you put a pint of diesel in your engine oil, it cleans everything up lovely in the oil ways etc. I think you can leave it in there too, but i don't know, so don't go trying it and blaming me when it all goes wrong


dont know about that but recently I've started using a pre treatment before an oil change, basically you pour this stuff in before an oil change and run the engine for a short while then change the oil. My experience before I started doing this was after an oil change the oil would be manky after a couple of days, now my oil seems to be clean for a good few thousand miles, though strangely enough my oil went manky after I started using shell vpower though after the recent change the oil seems to be clean back to its normal service intervals.

Also I can remember reading somewhere about running an engine (not driving a car) using an extemely light oil as a cleaning/flushing agent, so I suppose diesel would do a similar thing.

DarrenW - 6/6/07 at 01:12 PM

http://www.automotiveforums.com/vbulletin/showthread.php?t=283211

Some useful vids on there as well that dont work!!

Iam sceptical. Assuming you dont rush the water in and take great care - what is the worst that could happen? Can the water get into the oil? or is the intention to let the combustion chamber turn it into steam at a small rate?

Just as an aside - if you run a little car that has a foam filter sticking out of the bonnet and you drive in the rain - does this do the same thing? If so what would stop you running the car and just spray the foam filter with a little water at a time?

DarrenW - 6/6/07 at 01:23 PM

http://www.patentstorm.us/patents/6673758-description.html

http://www.freepatentsonline.com/20030040448.html

http://www.freepatentsonline.com/4351289.html
http://observertoday.com/Automotive/articles.asp?articleID=11463