What makes oil pump delay its pumping action?

Question:
I am still looking for answers to my pump trouble. It seems that there is a delay on my pump to do its thing. It wories me it might not pump at all. What should be done.

Answers:

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The only answer other than the ones already given that I can think of is:
Cavitation.
I. E. the pump is sucking air before oil actually gets to it, like low oil level.

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slug on bottom of the pan?

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if it takes a while to build oil pressure its either pluged or wayving goodbye. have it fixed now before it fails and destroys the engine.
are you sure its the pump and not the gauge?

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The pump is a driven component that has a gear set internally that creates a suction that pulls oil from the bottom of the oil pan and up throught the various parts of the engine. If it is working sporatically I HIGHLY recommend replacing it.

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It's very common for it to take a couple seconds to start making pressure when first starting for the day. If you run it all day, and it keeps good pressure till you turn it off, don't worry about it.

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What makes you think there is a delay in the oil pump? With the engine running, so is the oil pump. If you mean the oil pressure indicator stays at zero for a while, unless the engine is clattering and knocking, it's not running at zero oil pressure, so it would probably be a bad sensor in that case.

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If it does clatter and seem to be starved for oil, couple of things to check. Drop the pan and make sure the screen is clean and the oil pump is mounted and torqued as it should be. Look at the bottom of the oil pan for any sludge. If all appears as it should be this might be the time to replace the oil pump, if not, take care of whatever problem was manifested, put it all back together and fill it with the proper oil and try again.

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there is not such delay in oil's pumps

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there is whether You have a wear out engine or defective oil pressure release valve.

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if believe there is a delay is only the dial indicator.

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