Coolant drain
I tried to drain the coolant as part of the installation of Stage1 injectors. I was able to turn the valve 90° but no more and no coolant would drain. Should the valve turn more than 90° or is my drain valve defective? I got around the problem by pulling coolant out of the top tank and catching a few drops that leaked at the thermostat housing but I want to know if I can get the coolant drained in the future or do I need a new valve?
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