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

[dfrazz]

So were the lines reversed in your case?

Yes. Even though I had a few minutes of run time with zero pressure, the engine was still fine.

 

[pnora]

I didn't get a chance to remove the lines and crank the engine I got distracted with something else. That said, I did remove the oil filter and while it was not full (it is upside down so I am sure it did drain some) it did have a fair bit of oil.

So, my conclusions at this point are (correct me) is that the pump is working and it appears to be pulling oil from the pan via the pickup tube so either my lines are reversed (despite what the markings are saying) or the filter is bad.

Now I guess if the O ring on the pickup tube was present but rolled or something where it is sucking air and oil but unable to build pressure due to it sucking air I could see that.

I will pull the lines tomorrow after I get the battery sorted out so that I can crank it.

I know lots of guys have made the honest mistake of switching them. .A remote oil filter must be plumbed to the two 3/8" NPT ports on the cylinder block near the factory oil filter (the bottom port on the engine block is the inlet & the upper port is the outlet). So the bottom line on the block is where the oil enters, returning from the filter housing. This would be the more centered port on the housing. And the upper line off the block is the outlet which means the oil feed side from the pump. If reversed you will be up against the flow back valve in the filter. Lots of people think the oil flows into the center of the filter. Not so. So green arrow will go to bottom port on the block and the red arrow will go to the upper port on the block.

 

[70chall440]

Thanks, I am going to switch the lines today and try it.

 

[70chall440]

UPDATE: @pnora you were absolutely correct, the lines were reversed. I stared at all of the fittings, looked at "in and out" and was 100% sure I had it right but after switching them it took a second but I got 90 lbs of oil pressure!!

THANK YOU to everyone who chimed in and offered suggesting's and support, you don't know how close I was to just pushing it out of the shop and pouring gas all over it.... LOL Sincerely though, thank you again for taking the time to respond.

I am not at all new to cars having built many but in this case it got me because I thought that out of the engine to in on the filter housing and out of the housing to in on the engine. This is how I had it plumbed and I confirmed this many times (see the attached picture, if you look closely you can see that is how I have it)

Regardless, now its is sorted, the engine starts and idles so we are good with that. Now I need to fix the leaking PS pump and get the cooling system back in.

 

[pnora]

UPDATE: @pnora you were absolutely correct, the lines were reversed. I stared at all of the fittings, looked at "in and out" and was 100% sure I had it right but after switching them it took a second but I got 90 lbs of oil pressure!!

THANK YOU to everyone who chimed in and offered suggesting's and support, you don't know how close I was to just pushing it out of the shop and pouring gas all over it.... LOL Sincerely though, thank you again for taking the time to respond.

I am not at all new to cars having built many but in this case it got me because I thought that out of the engine to in on the filter housing and out of the housing to in on the engine. This is how I had it plumbed and I confirmed this many times (see the attached picture, if you look closely you can see that is how I have it)

Regardless, now its is sorted, the engine starts and idles so we are good with that. Now I need to fix the leaking PS pump and get the cooling system back in.

You must need my address for the reward. Lol. You had the horse with blinder syndrome. Ask me how I know.

 

[70chall440]

Well its sorted so I can move on to other issues.. lol