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jzx83 Occasional Poster Location: Gympie Registered: June 2005	Re: Carbon clean??? Mon, 20 June 2005 13:03 M.W.P. wrote on Mon, 20 June 2005 19:10 Very much a noob question. Did you read any of the above? To remove any kind of hard carbon, it must be soaked/softened first. This cant be done by sprying somthing into the engine while its running... itll just get burnt. Actually, if you've ever taken off a cylinder head which has had water leaking into the combustion chamber, you'd probably realise that engine coolant can make a pretty good job of de-carbonising. The cylinder in question is generally as clean as a whistle, while the others are still as grotty as you'd expect. Don't know how long the water needs to be going into the motor though. Also care needs to be exercised that you don't get too much in there at once and 'hydraulic' the motor. ie try to force water to compress and end up bending a rod or sundry other possible nasty outcomes. I have limited myself to a spray bottle and misting the water into the carby for about a quarter of an hour, lots of billowing smoke/steam and (probably) much cleaner inside afterward. We have also put second hand motors into junker Falcons and freed up the rings by dropping oil or Moreys down the carby. Smokes like a bogan for quite a while, but does seem to bring the compression up. I wouldn't recommend oil to reduce carbon though, I'd reckon if anything it may increase the carbon. My mate who is a retired diesel fitter reckons they used to put a cleaner called Bon Ami down the carby, not sure if that was for carbon or glazed bores or both. I think it was something similar to Jif or possibly Ammonia. Anyway, carby cleaner is probably a pretty good bet, although I still reckon the water would work, after all, one of the effects of water injection is to keep the carbon off the combustion chamber surfaces, hence reducing pre ignition. The other effect being that the water vaporising absorbs some of the heat in the intake charge thus cooling it and giving a small intercooling effect. Which also helps prevent pre ignition. Cheers Richard [Report message to a moderator]

	Subject	Poster	Date
	Carbon clean???	Rainey	Fri, 17 June 2005 04:06
	Re: Carbon clean???	oldcorollas	Fri, 17 June 2005 05:06
	Re: Carbon clean???	Merudo	Fri, 17 June 2005 05:55
	Re: Carbon clean???	Rainey	Fri, 17 June 2005 05:36
	Re: Carbon clean???	Corona RT142	Fri, 17 June 2005 06:01
	Re: Carbon clean???	Merudo	Fri, 17 June 2005 06:06
	Re: Carbon clean???	oldcorollas	Fri, 17 June 2005 07:10
	Re: Carbon clean???	allencr	Fri, 17 June 2005 13:12
	Re: Carbon clean???	FKN16V	Sat, 18 June 2005 05:00
	Re: Carbon clean???	4agte	Sat, 18 June 2005 05:18
	Re: Carbon clean???	M.W.P.	Sat, 18 June 2005 05:46
	Re: Carbon clean???	mrshin	Sat, 18 June 2005 08:00
	Re: Carbon clean???	BradW	Sat, 18 June 2005 08:48
	Re: Carbon clean???	b1gb3n	Sun, 19 June 2005 12:34
	Re: Carbon clean???	TA-022	Mon, 20 June 2005 22:37
	Re: Carbon clean???	b1gb3n	Mon, 20 June 2005 23:31
	Re: Carbon clean???	4agte	Tue, 21 June 2005 04:13
	Re: Carbon clean???	brendanteck	Mon, 20 June 2005 01:31
	Re: Carbon clean???	HyDrA	Mon, 20 June 2005 01:57
	Re: Carbon clean???	oldcorollas	Mon, 20 June 2005 03:29
	Re: Carbon clean???	cannonball	Mon, 20 June 2005 04:39
	Re: Carbon clean???	M.W.P.	Mon, 20 June 2005 05:50
	Re: Carbon clean???	Rainey	Mon, 20 June 2005 03:00
	Re: Carbon clean???	Merudo	Mon, 20 June 2005 03:41
	Re: Carbon clean???	Yian	Mon, 20 June 2005 05:58
	Re: Carbon clean???	Aust162	Mon, 20 June 2005 08:27
	Re: Carbon clean???	M.W.P.	Mon, 20 June 2005 09:10
	Re: Carbon clean???	jzx83	Mon, 20 June 2005 13:03
	Re: Carbon clean???	4agte	Mon, 20 June 2005 13:29
	Re: Carbon clean???	M.W.P.	Mon, 20 June 2005 14:55
	Re: Carbon clean???	4agte	Mon, 20 June 2005 14:57
	Re: Carbon clean???	EldarO	Mon, 20 June 2005 15:14
	Re: Carbon clean???	4agte	Mon, 20 June 2005 15:17
	Re: Carbon clean???	TA-022	Tue, 21 June 2005 11:20
	Re: Carbon clean???	Big T	Wed, 22 June 2005 09:36
	Re: Carbon clean???	Aust162	Wed, 22 June 2005 11:02
	Re: Carbon clean???	greenta22	Tue, 21 June 2005 15:16
	Re: Carbon clean???	urban_myth	Wed, 22 June 2005 06:19
	Re: Carbon clean???	Merudo	Wed, 22 June 2005 06:23
	Re: Carbon clean???	Ribfeast	Wed, 22 June 2005 06:20
	Re: Carbon clean???	jeffro RA28	Wed, 22 June 2005 08:01
	Re: Carbon clean???	Big T	Wed, 22 June 2005 11:08
	Re: Carbon clean???	4agte	Wed, 22 June 2005 14:34
	Re: Carbon clean???	Jezza	Wed, 22 June 2005 23:22
	Re: Carbon clean???	jzx83	Thu, 23 June 2005 04:48
	Re: Carbon clean???	jzx83	Thu, 23 June 2005 04:59
	Re: Carbon clean???	jeffro RA28	Thu, 23 June 2005 10:28
	Re: Carbon clean???	illuminatus	Fri, 24 June 2005 00:49
	Re: Carbon clean???	jeffro RA28	Fri, 24 June 2005 07:47
	Re: Carbon clean???	Rainey	Fri, 24 June 2005 01:02
	Re: Carbon clean???	Aust162	Fri, 24 June 2005 08:28
	Re: Carbon clean???	187_20v	Sun, 24 July 2005 05:26
	Re: Carbon clean???	richov8	Sun, 24 July 2005 06:08
	Re: Carbon clean???	blofly	Mon, 25 July 2005 13:16

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