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[quote]QUOTE: Originally posted by edblysard Something you dont brag to your girlfriend about? Ed [/quote] Flushcocks are also called blowdown valves. You need to blowdown an engine that has sat cold for a while because condensation forms in the cylinders. Condensation is water, which doesn't compress. If you don't open the blowdown valve and crank the engine to blow the water out, you risk breaking pistons, rods and/or crankshafts.
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