5S-FE MK2 Non-Turbo Engine Bleed Valve Leaking While Refilling Coolant. Bad O-rings? [Archive] - Toyota MR2 Message Board

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Hi everybody. I recently purchased a 1993 NA MR2. Unfortunatly the car came with a leaky radiator. I have managed to get a used replacment radiator and swap it in. I am now at the refill with coolant stage. I hooked up the tubes to the bleed valves at the radiator and heater, and hung them from the hood. I filled up the system with about 2 gallons of coolant so that fluid started filling the bleed tubes. I then noticed that coolant was leaking out of the valve screw itself. Is this