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JAXAshby
 
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Default Anyone know how an oil pump draws a prime?

Thus the old practice of chucking a rod with appropriate gear on the end
in a drill motor, pulling the distributor, and spinning up the oil pump
on older engines after a rebuild.


yup.

and also the reason race car engines and race motorcyle engines are spun up
with the ignition off to achieve pressure oil to all the bearings needing
pressure oil before lighting the fire.

Also the reason aircraft owners who care about their engines run the prop
through a number of times before turning the mags

Also the reason the US Navy has prelube precedures for piston engines.