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Old 05-09-2019, 11:57 AM   #1
nailbender
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Default No oil pressure [8BA]

This on new rebuild, done at a shop.[this shop is OK done other work for me] Started with electric gauge checked with mech. no pressure. pulled the gauge only drips from the tube. Changed oil again, same. Pulled the pan and pump [looks new as the invoice said]. The engine fired right up and sounds good. With the pan off I can see assemble lube here and there. Put air up the pump hole via rubber stopper no bubbles from my oil pressure tube. Plain C maybe D. Any ideas where to look next, or how check things further.
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Old 05-09-2019, 12:01 PM   #2
Ggmac
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Default Re: No oil pressure [8BA]

Call the shop that built it ! ASAP just to make sure they can't come back and void any warranty. How close is the pickup from the pan ? Did they assembled the engine and the pan ? , intake ?
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Old 05-09-2019, 12:16 PM   #3
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Default Re: No oil pressure [8BA]

Did they pack the oil pump with STP or assembly lube to lubricate the gears?
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Old 05-09-2019, 12:32 PM   #4
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Default Re: No oil pressure [8BA]

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Originally Posted by flatjack9 View Post
Did they pack the oil pump with STP or assembly lube to lubricate the gears?
pump just had oil, and turns fine
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Old 05-09-2019, 12:35 PM   #5
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Default Re: No oil pressure [8BA]

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Originally Posted by Ggmac View Post
Call the shop that built it ! ASAP just to make sure they can't come back and void any warranty. How close is the pickup from the pan ? Did they assembled the engine and the pan ? , intake ?
Hay the pickup tube might be a thing, I'm going to look in to that[ something else to check, thanks]
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Old 05-09-2019, 12:38 PM   #6
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Default Re: No oil pressure [8BA]

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You can check your oil gallery plug to make sure it is installed. It should have been removed for cleaning.
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Old 05-09-2019, 12:46 PM   #7
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Default Re: No oil pressure [8BA]

Was a "Full Flow" filter added?
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Old 05-09-2019, 12:47 PM   #8
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Default Re: No oil pressure [8BA]

The pickup tube is nice and close the bottom, not that
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Old 05-09-2019, 12:48 PM   #9
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Default Re: No oil pressure [8BA]

No filter
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Old 05-09-2019, 12:51 PM   #10
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Default Re: No oil pressure [8BA]

Oil galley plug??? maybe that's way the air seem to be coming out up in the block not any where else.
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Old 05-09-2019, 01:05 PM   #11
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Default Re: No oil pressure [8BA]

Maybe they forgot the idler gear in the back. You should get some oi pressure from just turning the stater with the spark plugs out.
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Old 05-09-2019, 01:17 PM   #12
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Default Re: No oil pressure [8BA]

Do 8ba's have an oil pressure relief valve in the valve valley? If so,was it installed? Just a thought.
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Old 05-09-2019, 01:19 PM   #13
marko39
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Default Re: No oil pressure [8BA]

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Maybe they forgot the idler gear in the back. You should get some oi pressure from just turning the stater with the spark plugs out.
Plus, a 12 volt battery helps. You should see around 25 psi .
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Old 05-09-2019, 01:32 PM   #14
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Default Re: No oil pressure [8BA]

All good ideas and a pile of help. Takes me awhile to check each one. Still looking, this engine is all WAS all together with all the body fluids in it.
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Old 05-09-2019, 01:35 PM   #15
alanwoodieman
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Default Re: No oil pressure [8BA]

had it happen before--oil gallery plug was left out
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Old 05-09-2019, 01:39 PM   #16
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Default Re: No oil pressure [8BA]

Guys I got to go to work, I'll be back and do some more looking. Thanks so much
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Old 05-09-2019, 02:55 PM   #17
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Default Re: No oil pressure [8BA]

You don't want it too close , sometimes the pickup is too close and can't suck the oil it's blocked by the oil pan
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Old 05-10-2019, 07:18 AM   #18
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Default Re: No oil pressure [8BA]

Return it to the builder... No need to chase rabbits, if the builder is a "good guy" I am sure that he would rather find and fix the issue than have someone else "maybe" get it to work Chap
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Old 05-10-2019, 07:51 AM   #19
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Default Re: No oil pressure [8BA]

Had a day to think about this oil pressure problem. I made a plug with place to put some air into the block. Doing so there seem to be a lot of air exiting some where in the block. This laying on my back holding the hose and a light trying look and lesson. I've seem a picture of the oil system here [ford barn] and it looks like there should not be any where for mass amount of air to come out. I understand how the system works so I think or guess that there may be hole that is not suppose to be in the system. I wonder if I can make some sort low pressure pump to push oil up the oil pump hole so I can see something. Does this sound like a workable plan? I maybe thinking out loud. Thanks for all your replies .
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Old 05-10-2019, 08:34 AM   #20
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Default Re: No oil pressure [8BA]

Remove the intake manifold to see if the fuel pump pushrod bushing is in place.
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