2019 5.7 crate engine not building oil pressure - Need some G3 Hemi gurus

[70chall440]

As the title says, I have a new Mopar crate engine which is a 2019 manufacture 5.7 crate engine. I got it new and installed it about a year ago into my 71 Charger. I finally went to fire it and no oil pressure. The engine ran for about seconds and died, I did this twice so about 30 seconds all in.

Some pertinent info about the engine;
Cam changed to a 6.4 cam (retained the original lifters but did swap springs)
Changed the oil pump to a Hellcat pump (brand new Mopar part)
I am using a Holley pan
I am using a remote oil filter (has a WIX filter on it now)

What I have done thus far;
I unscrewed the oil filter and it had pressure spraying oil
I disconnected the 2 lines and they both had some oil in them
I primed the engine using the bottom port and rotated the engine while doing so putting about 3 qts into the engine that way
I connected a temp manual oil pressure gauge which is plumbed into the input/return line coming from the filter going into the top port on the engine.

I pulled the fuel pump fuse and turned the engine over to see if I had pressure, none observed on the manual gauge and the electric gauge is showing 0 (actually -0 and then 0). The manual gauge line does have a little oil in it but only at the very bottom (or beginning) of the line but just a little like there is some slight pressure.

I checked the oil and it was about 2 - 2.5 qts low so I added about 3qts and tried again but got the same result, ie. no pressure.

I am thinking that the pickup (or something) isn't sealed but that the pump is trying (hence oil at the filter and in the lines).

At this point I am quite sure I am going to have to pull the pan, not sure if I can get it out with the engine in the car.

I am looking for some insight

Thanks in advance

 

[pnora]

Can the lines on the remote filter be reversed?

 

[Sedbld]

Make sure you have the blue o ring that seals the pickup tube to the actual pump. I work at a dealer and have seen many times where the o ring has been overlooked and no oil pressure

 

[F4R/T]

Crank driven pump, o ring on the pick up tube? The little bolt holding it tightly in place?Prime the pump before fire? I’ve replaced many and had 0 issues.

 

[jimbosride]

Not sure if this will help?


5.7 mopar crate engine.

 

[70chall440]

Can the lines on the remote filter be reversed?

Yes they could be physically reversed but they are not, I checked them several times. Each line has a different colored AN fitting so it is easy to tell which line is which. Also they are routed correctly.

 

[70chall440]

Make sure you have the blue o ring that seals the pickup tube to the actual pump. I work at a dealer and have seen many times where the o ring has been overlooked and no oil pressure

I "think" it is there but won't know until I pull the pan which I am not looking forward too, its a pretty tight fit.

 

[70chall440]

Crank driven pump, o ring on the pick up tube? The little bolt holding it tightly in place?Prime the pump before fire? I’ve replaced many and had 0 issues.

Yes I primed the pump 2 days ago. I was pretty methodical I reassembled the tube and pan but I suspect its the O ring at this point.

 

[70chall440]

Not sure if this will help?


5.7 mopar crate engine.

Yep, watched it many times to include 2 days ago.

 

[70chall440]

I really appreciate everyone offering suggestions, I think at this point its the O ring.

I believe that the pump is working because there is oil in the lines to include just a little in the mechanical oil pressure gauge line.

I going to pull the front of the engine apart which will get me to the pump. I am going to take a hard look at the pan clearance (I am using a Holley pan).

 

[DGE330/NC]

also when putting oil pick up tube in oil pump check to see if it is seated right sometimes it will not seat all the way flush with oil pump i usually take a brass punch and tap it lightly to make sure

 

[pnora]

Yes they could be physically reversed but they are not, I checked them several times. Each line has a different colored AN fitting so it is easy to tell which line is which. Also they are routed correctly.

Pull the lines off the filter and crank it over. In your first post you said oil squirted out when you loosened the filter. What brand relocation kit are you using?

 

[70chall440]

Pull the lines off the filter and crank it over. In your first post you said oil squirted out when you loosened the filter. What brand relocation kit are you using?

@pnora

I am using an Earls branded relocation kit, Holley owns them so I go it with another order.

That is correct, when I first noticed that there wasn't any oil pressure I unscrewed the filter and oil sprayed out with some force. I was surprised by this because the handheld wasn't showing any pressure. When I removed the lines (both) they had oil in them, not full but a fair bit (enough to make a mess).

The instructions call for a PH8 or HP 1 however I am using a WIX 51515 which by my research is a direct replacement.

 

[pnora]

@pnora

I am using an Earls branded relocation kit, Holley owns them so I go it with another order.

That is correct, when I first noticed that there wasn't any oil pressure I unscrewed the filter and oil sprayed out with some force. I was surprised by this because the handheld wasn't showing any pressure. When I removed the lines (both) they had oil in them, not full but a fair bit (enough to make a mess).

The instructions call for a PH8 or HP 1 however I am using a WIX 51515 which by my research is a direct replacement.

Is the handset on the right line? Plumbing the remote wrong by accident is not uncommon. If you use a temporary clear line you should see air bubbles in the oil when you crank it if its sucking air. I would crank it with the lines off before pulling the pan.

 

[70chall440]

Is the handset on the right line? Plumbing the remote wrong by accident is not uncommon. If you use a temporary clear line you should see air bubbles in the oil when you crank it if its sucking air. I would crank it with the lines off before pulling the pan.

The handset (aka the oil pressure sender connected to the ECU harness) is plumbed into the/a oil port in the front the block where the original sending unit was (I believe). I also have a manual gauge plumbed into the return line from the oil filter which showed a slight bit of oil but no pressure at all.

I have to remove the oil anyway so I will see if I can rig something up for the oil lines and see what happens. It should only push oil out of the outlet port (bottom port) I would think.