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Guys, Pulled my 308 down this afternoon and have a quick question. What would be causing number 7 exhaust valve to be almost white while the rest all appear to be dark in colour? Is this a mixture issue? Pic below.  Cheers Kev Edited by user Monday, 1 January 2007 7:49:26 AM(UTC)
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A quick diagnose would be water.
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Its hard from a pic but it looks lean on that cyl.If water enters a cylinder it tends to clean the carbon up in that cylinder. If it is cleaner in no 7 than the rest as well as the valve it may be a water problem.A clearer pic and one of the piston will
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