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Remove the hose from the engine tank, then start the engine. See if you can get any oil from the line with the engine idling. If you do, hook it back to the engine tank and open the cap totally on that tank. Close the cap when the oil level overflows.
If you do not, remove the hose without the blue stripe on the tank, with the engine at idle, you should feel some air pulsing from that hose. IF you do not, the pulser on the engine is bad.