502 Oiling issue

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05-17-2018 | 03:43 PM

#11

endeavor1

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From: Lees Summit ~ LOTO 10MM

Pop the valve covers and filter, pull the distributor and prime it and see where all you have oil moving. There’s good advice mentioned above

05-17-2018 | 04:06 PM

#12

F-2 Speedy

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From: Midwest & T-Rock

I wouldnt start it again until you get oil up on top of the heads, is this an MPI motor ?.....pull the the dist. get a priming shaft tool and a 1/2 drill and see if you can get the oil to move, there may be an air pocket in the pickup oil pump causing it to cavitate. pickup to close to the pan ?

05-18-2018 | 12:19 PM

#13

Dutchboy

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From: Dallas, TX

Quote:

Originally Posted by AllDodge

Shouldn't need push rods, but if you get a good set of lifters now, you can use them in the rebuild next year or so

Right on, I'll get a set, what do you think about the lunati 72920-16? I live literally 1.5 miles from summit racing in Arlington tx.

05-18-2018 | 12:20 PM

#14

Dutchboy

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From: Dallas, TX

Quote:

Originally Posted by sutphen 30

I'd look at the filter head,make sure oil comes out on the outside of the pad and goes back in the center.what lifters did you use and where did they come from.

they are the stock lifters with about 400 hours on them

05-18-2018 | 12:28 PM

#15

Dutchboy

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From: Dallas, TX

Quote:

Originally Posted by Griff

There should not be a lot of oil on top of the heads. It flows up the pushrods and then drains back down.
You might just have a rocker arm that needs another 1/4 turn.

I'm gonna bump it over and re tighten them all down make sure I didn't have a loose one.

05-18-2018 | 12:37 PM

#16

Dutchboy

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From: Dallas, TX

Quote:

Originally Posted by F-2 Speedy

yes its a MPI, and the pick up and pan are stock set up. only thing different is the pump. 2000 502 out of a 38 scarab

Last edited by Dutchboy; 05-18-2018 at 12:38 PM. Reason: left out information

05-18-2018 | 01:57 PM

#17

F-2 Speedy

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From: Midwest & T-Rock

you reused the old pickup ? typically those are braised or tig welded in place

05-18-2018 | 01:59 PM

#18

AllDodge

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From: KY

Quote:

Originally Posted by Dutchboy

Right on, I'll get a set, what do you think about the lunati 72920-16? I live literally 1.5 miles from summit racing in Arlington tx.

I'm not the guy to ask about best lifters, that would be some others like Eddie

05-18-2018 | 02:31 PM

#19

Dutchboy

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From: Dallas, TX

Quote:

Originally Posted by F-2 Speedy

you reused the old pickup ? typically those are braised or tig welded in place

yes I was unaware that I would need to change it

05-18-2018 | 02:38 PM

#20

AllDodge

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From: KY

Quote:

Originally Posted by Dutchboy

yes I was unaware that I would need to change it

Normally the new oil pump comes with the pickup attached, your old one should have been the same way.
Here is the one that should have been in the motor

Genuine Mercury & Mercruiser parts. 827643 PUMP ASSY-OIL Genuine OEM Mercury Marine-Mercruiser part

Others do make a good point that maybe a rocker nut is coming loose or a stud is starting to extract.

It is just a light ticking correct?

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