Something strange

[Fran Blacker]

In the new pump did you put any heavy oil or white lube to seal pump inside? If there's light oil may not suck the oil out of the pan.

 

[Roger63]

In the new pump did you put any heavy oil or white lube to seal pump inside? If there's light oil may not suck the oil out of the pan.

No just enough 10/30 to make it wet.

 

[Tintoy35]

Is it a big block? If so check to see if you bent a pushrod. Lifter might have come out the block.

 

[1 Wild R/T]

Did you get oil pressure since installing the new pump? If not than yeah, it never primed so put maybe a teaspoon of white grease in the pump...

If it has had pressure since & lost prime it's sucking air somewhere..

 

[Roger63]

Is it a bodies? If so check to see if you bent a pushrod. Lifter might have come out the block.

It's a 440.

 

[Roger63]

Did you get oil pressure since installing the new pump? If not than yeah, it never primed so put maybe a teaspoon of white grease in the pump...

If it has had pressure since & lost prime it's sucking air somewhere..

New pump never got pressure.

 

[snakeoil24]

Make this a lot easier get a priming rod and drill spin it up and look for issues

 

[Roger63]

Make this a lot easier get a priming rod and drill spin it up and look for issues

I ordered one today.

 

[Fran Blacker]

Changed my oil while doing other work on my car. Remove oil filter and left it off for 45 mins to an hour. No oil pressure, had some STP removed pump added it and spun it. Put pump back on had oil pressure.

 

[snakeoil24]

also avoid using fram filters!!!

 

[Roger63]

also avoid using fram filters!!!

Yea I use wix

 

[snakeoil24]

Yea I use wix

Wix, purolator or Napa is best

 

[eldubb440]

is it possible the pick up is smashed tight to the bottom of the pan?

 

[snakeoil24]

Anything is possible

 

[Roger63]

is it possible the pick up is smashed tight to the bottom of the pan?

I don't think so I had a aftermarket pan on it and it's about 1/2 inch deeper than the factory pan.

 

[eldubb440]

I don't think so I had a aftermarket pan on it and it's about 1/2 inch deeper than the factory pan.

doesn't the pan come with a matching pickup? with a specified clearance to the bottom of the pan? ie: 1/4 inch or so

 

[Roger63]

doesn't the pan come with a matching pickup? with a specified clearance to the bottom of the pan? ie: 1/4 inch or so

I used the stock pickup, I got the pan from 440 source it didn't come with one. But the pan was supposed to be identical to a stock pan. Lesson learned.

 

[RemCharger]

Inspect the pickup tube and fluid path to the pump.. Anyplace it can suck air instead of oil, IE pickup tube not sealing to the threads in the block, missing gasket between the pump & block, Oil pickup tube screwed so tightly into block that the boss on the block cracked....

You previously lost pressure when the pump lost prime, there's a reason it's loosing prime, probably sucking air...

This is where I would start. Do a bionic eye check of the pickup tube threads. And as stated, no thread sealant seems to be common mistake.

 

[Roger63]

Update: following all of you fine gentlemen's suggestions I removed distributor and pump drive and put on a different pickup tube. I submerged it in a pan of new oil and tested,I had oil pressure within 5 seconds. So I guess I had a cracked pickup tube and it was sucking air. Thanks to all for the advice.
Roger

 

[themechanic]

Happy days are here again.