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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. | 
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		#4 | 
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			 RCC Addict 
			
			
			
			Join Date: Mar 2008 
				Location: Honolulu, Hawaii USA 
				
				
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			The same reason why you're doing it in the first place... 
		
		
		
		
		
		
			
		
		
		
		
	Loosening the carbon chunks... How much miles on the engine? Engine mileage over 100k miles with the older 3-piece seals can have very thin "top" apex seal pieces - hard to explain unless you see the apex seal itself. A "chunk" of carbon can cause this top, thin piece to crack. This is why I'd rather prefer ATF, which actually dissolves the carbon over shoving water into the engine. I doubt the water affected the spark plugs unless you used enough water to hydrolock the engine. -Ted  | 
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