No oil pressure on a 2013 maxxforce,

Where are you checking oil pressure? Factory gauge? Sounds like you threw a bucnch of parts at it without hooking up a different gauge to the side of the block. There’s a lot of ways you can see if you have oil psi. One quick way is to unscrew your oil filter a few turns and see if oil shoots out all over the sides of it.

 

That’s a start. Check another spot to verify

 

What model engine do you have?

 

Hmm, those do not have oil lines feeding the air compressor, direct oil feed through the block.

 

Ok, you probably have Maxxforce DT,9 or 10 series.

 

Unscrew oil filter 3 or 4 turns so it’s completed unseated. Have some start up truck while you watch. Yeah it will be a mess but you will sure as hell know you have oil pressure and then you can be done with this and no for sure. How bout it @Heavyd