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Ole Don · 01-16-2011, 10:04 AM

The was talk the other day on the HAMB that a PCV caused carbon on the intake valves. I have worked on engines since long before PCV's were used. The valves look the same to me. The bottom line is, if you have a fresh engine that has been properly cleaned, and you like your engine to stay clean inside, use a PCV and it will be spic and span for years.

01-16-2011, 10:04 AM	#5
Ole Don Senior Member Join Date: May 2010 Location: St. Michael, Minnesota Posts: 1,713	Re: PCV considerations The was talk the other day on the HAMB that a PCV caused carbon on the intake valves. I have worked on engines since long before PCV's were used. The valves look the same to me. The bottom line is, if you have a fresh engine that has been properly cleaned, and you like your engine to stay clean inside, use a PCV and it will be spic and span for years.