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Ive tried it using a speed driver. It doesnt work. An engine idling at 800 rpm cant produce enough suction to lift oil into an unprimed pump. A drill running at high speed takes 20 to 30 seconds to create enough suction to get oil into the pump but somehow a turning a ratchet by hand creates enough suction to prime it? Nope, not in my experience. The only time a ratchet might work is if the pump is already primed.
I always install the oil pump primed, thought you had to, guess not.
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