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BrianG · 04.22.2006, 04:18 PM

Actually, it's OK for the piston head to be a golden color. That's the oil part of the fuel "carmelizing" (for lack of a better term). If it's too clean, there is a chance that there isn't enough oil (running too lean). However, if the golden brown is more black, you are running too rich and the buildup could cause premature wear as well.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	04.22.2006, 04:18 PM Actually, it's OK for the piston head to be a golden color. That's the oil part of the fuel "carmelizing" (for lack of a better term). If it's too clean, there is a chance that there isn't enough oil (running too lean). However, if the golden brown is more black, you are running too rich and the buildup could cause premature wear as well.