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no oil pressure on startup

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Post  maverick172 July 8th 2023, 1:35 pm

so my 521 when i leave it sit for 1 hr or longer when i start it my oil pressure guage does not move off zero for 5-10 seconds so i thought guage than tested with a diff gauge and same thing any ideas? i had my oil pan off and pickup tube off i wonder if the gasket between pump and pickup tube is no good? sucking air

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Post  69F100 July 8th 2023, 3:22 pm

I have had that problem one time before I didn't have the pickup tube gasket in right pulled the pan and fixed the gasket and my problem went away
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Post  rmcomprandy July 8th 2023, 6:52 pm

69F100 wrote:I have had that problem one time before I didn't have the pickup tube gasket in right pulled the pan and fixed the gasket and my problem went away

That and the oil is draining back to the pan from the pump for some reason.

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Post  maverick172 July 9th 2023, 12:06 am

rmcomprandy wrote:
69F100 wrote:I have had that problem one time before I didn't have the pickup tube gasket in right pulled the pan and fixed the gasket and my problem went away

That and the oil is draining back to the pan from the pump for some reason.

so i pulled engine this afternoon and pulled pan. turns out when i had the engine out and put the pickup tube on the gasket got folded somehow on the pickup tube to the oil pump .. "sucking air "

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Post  Mark Miller July 9th 2023, 11:11 pm

maverick172 wrote:
rmcomprandy wrote:
69F100 wrote:I have had that problem one time before I didn't have the pickup tube gasket in right pulled the pan and fixed the gasket and my problem went away

That and the oil is draining back to the pan from the pump for some reason.

so i pulled engine this afternoon and pulled pan. turns out when i had the engine out and put the pickup tube on the gasket got folded somehow on the pickup tube to the oil pump .. "sucking air "
It sucks you had to pull the engine and the oil pan off but at least you found the problem!!

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Post  69F100 July 10th 2023, 4:37 pm

maverick172 wrote:
rmcomprandy wrote:
69F100 wrote:I have had that problem one time before I didn't have the pickup tube gasket in right pulled the pan and fixed the gasket and my problem went away

That and the oil is draining back to the pan from the pump for some reason.

so i pulled engine this afternoon and pulled pan. turns out when i had the engine out and put the pickup tube on the gasket got folded somehow on the pickup tube to the oil pump .. "sucking air "

That's what happened to me but it was in a 4wd and I had enough room to get the pan off
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