no oil pressure

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no oil pressure

Post  Bart Knox on Tue Jun 06, 2017 8:20 pm

I finally got my motor in my truck and all hooked up. Started with the gauges today and didn't get a oil pressure reading so I pulled the sencor out from behind the intake and fired it up and no oil came out
.. Does this mean the pump isn't working???
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Re: no oil pressure

Post  6t6mustang on Tue Jun 06, 2017 8:45 pm

It means oil isn't pumping, there could be a couple things to cause that.. oil pump driveshaft got installed right?
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Re: no oil pressure

Post  Bart Knox on Wed Jun 07, 2017 1:25 pm

Thats what it was. It was rammed off to the side into the camshaft gear. Don't know how buddy screwed that up
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Re: no oil pressure

Post  dfree383 on Wed Jun 07, 2017 1:56 pm

If you been running it without oil pressure you better be tearing it down for bearings and inspection.
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Re: no oil pressure

Post  Bart Knox on Wed Jun 07, 2017 2:35 pm

Maybe 5 minutes tops... What do you think
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Re: no oil pressure

Post  dfree383 on Wed Jun 07, 2017 3:23 pm

You better be pulling it down
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Re: no oil pressure

Post  Bart Knox on Wed Jun 07, 2017 3:58 pm

The guy thats is going to help me this weekend said we should pull the motor change bottom end bearings and polish the crankshaft
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Re: no oil pressure

Post  norm on Wed Jun 07, 2017 5:58 pm

And then prime it, i hope.
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Re: no oil pressure

Post  pmrphil on Wed Jun 07, 2017 6:14 pm

If that was a new cam, I'd plan on replacing that, too, along with the lifters. Five MINUTES ??

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Re: no oil pressure

Post  Bart Knox on Wed Jun 07, 2017 7:31 pm

Five minutes is probably over what it ran... I fired it up for probably 90 seconds when I got the muffler on and probably not even that long when I hooked up the gauges and buddy that built it fired it up on the floor at his shop just to check for oil pressure and said it had pressure but dont see how that is possible when the drive was not in the distributor or the hole the bottom of the distributor go's in.
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Re: no oil pressure

Post  dfree383 on Wed Jun 07, 2017 8:48 pm

A pan gasket is cheaper than a new engine
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Re: no oil pressure

Post  Bart Knox on Wed Jun 07, 2017 8:57 pm

Not sure what you mean? Got a new pan gasket going to take the pan off and inspect everything for starters and hope everything is alright and if it looks like it is than do the bearing anyway to be safe break it in and hope for the best I guess. I'll have to go with what the guy I have helping me says because he builds motors and he's the one looking at it
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Re: no oil pressure

Post  DILLIGASDAVE on Thu Jun 08, 2017 2:58 am

After 5 mins without oil slinging around inside the crankcase the piston skirts, piston rings, & cylinder walls might be toast too.
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Re: no oil pressure

Post  D. Sea on Thu Jun 08, 2017 7:13 am

Bart Knox wrote:Not sure what you mean? Got a new pan gasket going to take the pan off and inspect everything for starters and hope everything is alright and if it looks like it is than do the bearing anyway to be safe break it in and hope for the best I guess. I'll have to go with what the guy I have helping me says because he builds motors and he's the one looking at it

Not trying to sound condescending but if your buddy builds engines and made that kind of catastrophic mistake... Well... he wouldn't be touching the engine again IMO.

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Re: no oil pressure

Post  pmrphil on Thu Jun 08, 2017 7:19 am

And that same buddy is the one who claimed it showed oil pressure when it couldn't have? Do you really want to trust him again?

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Re: no oil pressure

Post  Bart Knox on Thu Jun 08, 2017 10:11 pm

No not the same guy is helping me know I'm done with him... He's not a buddy and the only thing he'll be doing is reimbursing me for what has to be replaced.
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Re: no oil pressure

Post  4604X4 on Fri Jun 09, 2017 9:00 am

How can the oil pump drive shaft not be installed right? How would you get the distributor in if the pump shaft was not installed properly (missing, I can understand).
I don't believe there is enough room in the block to have the shaft sitting cocked in the block (not seated in the oil pump or distributor) and still have room to install distributor.
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Re: no oil pressure

Post  rmk57 on Fri Jun 09, 2017 10:10 am

I had the oil pump shaft fall off once while installing it with the distributor. Didn't notice or hear it fall of the distributor. What I did notice was the loud "clank" when the crankshaft hit it when starting the engine up for the first time. It also put a nice outward crease in my oil pan.

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Re: no oil pressure

Post  pmrphil on Fri Jun 09, 2017 11:44 am

Hopefully you have learned since then that the shaft goes in with the PUMP, (from the bottom!) not with the distributor. And the clip goes on the distributor end. Shocked

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Re: no oil pressure

Post  Bart Knox on Fri Jun 09, 2017 10:44 pm

I tried taking a picture but cant get it to show up... Theres lots of room for the distributor to go in the dive is way pushed off just touching the side of the camshaft gear
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