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oil pump not priming #974437
04/16/11 05:12 PM
04/16/11 05:12 PM
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Sarasota, Fl
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siggie30 Offline OP
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I have finished assembly and tried to prime my 360 small block (95'). I get no pressure on the gauge. I took the gauge off to confirm the galley was filling to no avail. I removed the engine and confirmed the pump is working, and reseated/sealed my pickup tube. I am at a loss. Any suggestions? Also, I installed a cup plug under the cap near the pump to be sure that oil would go through the filter during assembly, but my filter is not even getting oil.

Re: oil pump not priming [Re: siggie30] #974438
04/16/11 05:46 PM
04/16/11 05:46 PM
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QLD Australia
Keith Black® Offline
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check all the oil galley plugs are in..


--------------------------------
Darren Beale
Keith Black Racing Engines®
Re: oil pump not priming [Re: siggie30] #974439
04/16/11 05:55 PM
04/16/11 05:55 PM
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MOPAR HEADQUARTERS IN ALDEN NY
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hemigod426 Offline
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1st are you turning drill in right direction? are lifters in? try turning crank while priming


MOPAR OR NO CAR
Re: oil pump not priming [Re: Keith Black®] #974440
04/16/11 05:56 PM
04/16/11 05:56 PM
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Conway, SC
T2R9 Offline
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Quote:

check all the oil galley plugs are in..


Most common one missing is the left rear lifter galley plug. It sits right in front of the distributor drive gear.

Re: oil pump not priming [Re: siggie30] #974441
04/16/11 06:22 PM
04/16/11 06:22 PM
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Florida STAYcation
dIc dOc Deity ! Offline
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Quote:



but my filter is not even getting oil.




The filter should be as full as possible.

Re: oil pump not priming [Re: dIc dOc Deity !] #974442
04/16/11 06:54 PM
04/16/11 06:54 PM
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Sarasota, Fl
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siggie30 Offline OP
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I have all oil plugs in. I am thinking that the air space between the pump and filter is suspect. I will backfill and reattempt.


I don't even have 1/2 lift, but the other 1/2 is nitroused.
Re: oil pump not priming [Re: siggie30] #974443
04/16/11 07:05 PM
04/16/11 07:05 PM
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MOPAR HEADQUARTERS IN ALDEN NY
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hemigod426 Offline
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Quote:

I have all oil plugs in. I am thinking that the air space between the pump and filter is suspect. I will backfill and reattempt. [/quote put new dry filter on, like napa one with out valve in it, you will feel it fill and full prime on drill motor, it will freewheel,then slower,then huge resistance once full prime. also check your prime tool is engauging pump right


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Re: oil pump not priming [Re: hemigod426] #974444
04/16/11 07:14 PM
04/16/11 07:14 PM
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PA
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i agree ... there is NO need to fill filter the pump should easily pull enough vacuum to fill the filter ... make sure the drill is going the proper direction as mentioned above

Re: oil pump not priming [Re: 68_CONV_300] #974445
04/16/11 07:27 PM
04/16/11 07:27 PM
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NY
KillerB Offline
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That is quite odd, you should get oil pressure within a seconds of priming. I usually pack the pumps with vaseline, but either way there should be pressure in system after abit of priming, there seems to be another problem. Maybe pump to cap there's oil bleeding by/ blockage or something of that sort. Is the engine still out of vehicle?

Re: oil pump not priming [Re: siggie30] #974446
04/16/11 07:55 PM
04/16/11 07:55 PM
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Oregon
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AndyF Online content
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Easy way to check things is to take the filter off and then use a speed wrench to slowly turn the pump. You would have to have major issue to not have oil squirting out of the block almost immediately. Once you have oil at the filter then you install the filter and check for oil pressure at the cylinder heads or the back of the block.

Re: oil pump not priming [Re: AndyF] #974447
04/16/11 08:28 PM
04/16/11 08:28 PM
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Sarasota, Fl
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siggie30 Offline OP
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Update: I removed the filter and turned the pump clockwise. No oil was produced. I tried back priming from the oil filter and tried priming with no result. If it helps, the priming rod has about 5-6 inches of bubbly oil on it when I am done.


I don't even have 1/2 lift, but the other 1/2 is nitroused.
Re: oil pump not priming [Re: KillerB] #974448
04/16/11 08:29 PM
04/16/11 08:29 PM
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Sarasota, Fl
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siggie30 Offline OP
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Quote:

That is quite odd, you should get oil pressure within a seconds of priming. I usually pack the pumps with vaseline, but either way there should be pressure in system after abit of priming, there seems to be another problem. Maybe pump to cap there's oil bleeding by/ blockage or something of that sort. Is the engine still out of vehicle?



No, I have allready reinstalled it. Also, when priming I feel the freewheeling then a bit of resistance, but nothing else occurs.

Last edited by siggie30; 04/16/11 08:31 PM.

I don't even have 1/2 lift, but the other 1/2 is nitroused.
Re: oil pump not priming [Re: T2R9] #974449
04/16/11 08:35 PM
04/16/11 08:35 PM
Joined: Oct 2009
Posts: 118
Sarasota, Fl
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siggie30 Offline OP
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Quote:

Quote:

check all the oil galley plugs are in..


Most common one missing is the left rear lifter galley plug. It sits right in front of the distributor drive gear.




All plugs are installed, including the internal plugs. Good point though. The engine is technically fully built. I have allready fired it for a short time of about 6 seconds for an electric check.


I don't even have 1/2 lift, but the other 1/2 is nitroused.
Re: oil pump not priming [Re: siggie30] #974450
04/16/11 10:11 PM
04/16/11 10:11 PM
Joined: Nov 2003
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Lincoln Nebraska
RapidRobert Offline
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bypass mini cup plug not driven up high enough. good there? time to take a look at the pump/rear main cap/pickup

Last edited by RapidRobert; 04/16/11 10:14 PM.

live every 24 hour block of time like it's your last day on earth
Re: oil pump not priming [Re: RapidRobert] #974451
04/16/11 10:22 PM
04/16/11 10:22 PM
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Under My Car
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Are you turning the crank while priming? It was suggested above and you have not mentioned doing that.

Re: oil pump not priming [Re: Mopar_Country] #974452
04/17/11 12:44 AM
04/17/11 12:44 AM
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Posts: 118
Sarasota, Fl
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siggie30 Offline OP
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Quote:

Are you turning the crank while priming? It was suggested above and you have not mentioned doing that.


I turned it 4 full revolutions during priming attempts. Apparently, I think I may have to tear down and look at the block again. When the block returned from the hot tank, I spent alot of time cleaning out the galleys and passages with brushes. I tested the pump with a drill out of the vehicle in a oil container and it worked well, so I know the pump works. Lets say I did miss a plug. I assume it would be caused by a plug between the pump and the filter which only leaves the one that can be accessed through the vertical orafice directly under the sending unit, correct?


I don't even have 1/2 lift, but the other 1/2 is nitroused.
Re: oil pump not priming [Re: siggie30] #974453
04/17/11 02:55 AM
04/17/11 02:55 AM
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VA
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AtomicDog Offline
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I just went through pre-oiling my 5.9 Magnum motor. I installed a new high volume oil pump, Milodon pickup screen and dry oil filter. I spun the pump clockwise with my 1/2" drill and quickly produced 75 PSI of oil pressure on a mechanical guage I connected to the motor. Did you have a gasket installed between the pump and the rear bearing cap? You stated that you noticed bubbles in the oil when you pulled the pre-oil tool out of the pump. Sounds like your pump is pulling air on the suction side of the pump somewhere. Most likely place is at the rear main cap. Also the pickup tube may have a crack in it. Just some things to check..

Re: oil pump not priming [Re: AtomicDog] #974454
04/17/11 09:27 AM
04/17/11 09:27 AM
Joined: Oct 2009
Posts: 118
Sarasota, Fl
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siggie30 Offline OP
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After reviewing my assembly charts, I think one of the rear internal plugs are missing. I recall plugging the block just after taking it off the stand, but do not recall if I got the internal galley plugs. I will pull the engine and confirm. Thanks guys.


I don't even have 1/2 lift, but the other 1/2 is nitroused.
Re: oil pump not priming [Re: siggie30] #974455
04/17/11 09:40 AM
04/17/11 09:40 AM
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Lincoln Nebraska
RapidRobert Offline
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Quote:

a plug between the pump and the filter which only leaves the one that can be accessed through the vertical orafice directly under the sending unit, correct?


As you know it gets driven up the main oil vertical passage from the pump in the rear saddle under the main cap & it needs to b a certain distance up in the block & b between the 2 horizontle "out" passages to the filter & there's a slight recess there for it to seat. You have oil in the pan/pump works/you can feel it catching it's prime w the drill (CW). Sumpin's blocking the flow between pump and bottom horizontle out gallery as the filter is not even getting anything. EDIT take off the sending unit & stick a wire straight down in & see how much depth you have and have a helper shine a light into the lower horizontle passage & see if you see light looking down from the sending unit

Last edited by RapidRobert; 04/17/11 04:37 PM.

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Re: oil pump not priming [Re: RapidRobert] #974456
04/17/11 12:22 PM
04/17/11 12:22 PM
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North East Missouri
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Did you prime the pump itself? Fill it with oil or take the cover off & pack with vaseline. I would also take the pump apart if all else checks out, I have heard horror stories of the pump full of shavings out of the box.


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