Car has been sitting for a couple years. Before trying to start the engine, I've changed the oil and am now priming the oil pump through the cam sensor hole with a priming tool. So far I've run the drill clockwise at about 1000 rpm for several minutes. No oil can be seen moving around in the valve train compartment looking through the oil filler hole. How long does it take to get oil to the valve train? Could the oil tubes have clogged up just by sitting, or am I just impatient?