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waynne · 06-05-2008, 07:22 AM

I agree that carbon is bad. It causes hot spots in the engine. I think HDI was making regference to the previous post. I think there is a commonly held belief that carbon increases (improves) your engine compression preventing blow-by in the cylinders. In reality though I don't think a layer of carbon in the cylinder will make much if any contribution to the compression.

06-05-2008, 07:22 AM	#9 (permalink)
waynne Administrator Torque King Car: A3 1.8T Sport Join Date: Nov 2005 Location: Deal, Kent UK Posts: 7,723	Re: Alcohol/water injection turbo diesels. I agree that carbon is bad. It causes hot spots in the engine. I think HDI was making regference to the previous post. I think there is a commonly held belief that carbon increases (improves) your engine compression preventing blow-by in the cylinders. In reality though I don't think a layer of carbon in the cylinder will make much if any contribution to the compression. __________________ I got complimented on my driving today. There was a little note on the windscreen; it said 'Parking Fine.'