hpop oil droping need help

[protecdiesel]

i took plug out of top of hpop and watched while it was cranked and the level dropped fast i changed lpop didnt help
i really hope some one has a good answer this truck has been shop hopping for 1.5 years

[jesilvas]

Sounds like no one who's worked on it knows what they're doing.
What year is it?

[Patrick Feeley]

What is the truck doing? No start, starting then dying, etc? CEL on? Any particular service to it just before the symptoms started? What's been done/tried during all the "shop-hopping"? Sorry for all the questions, but it could be many things and your answers could help narrow things down a tad. Cheers!

[protecdiesel]

ok i did the signiture thing 02 is the troble maker i bought this truck from a friend in 08 for our roofing company.
it was in the shop for bad start with him. we had to plug it in below 30 first year seceond year we would be lucky to get it started below 30. after that it wanted to be pluged in even in summer. then it went to differant shops my partner mants to pull the engine i dont so it is at my house now.
i today pulled the oil filter off had it cranked for 5 seceonds and no oil came out where the filter screws on.

[jesilvas]

Ok so that would mean no low pressure oil pressure. Does the oil pressure gauge come up while cranking?
I seem to remember that somewhere, someone had an issue with a spring or valve or something near the oil cooler/filter mount. They were having low oil pres. at idle but fine at higher RPMs. Maybe yours is closed?
I know, dumb question but . . . it does have oil right?

[protecdiesel]

i took the oil filter off left it off and cranked it no oil came out i replaced the lpop because it looked like it wasnt pumping up i am understanding by reading on the internet untill it reaches 10 psi it will not start

[jesilvas]

Yea I understand you left it off.
Same questions: Does the oil pres gauge on the dash show pressure while cranking?

[protecdiesel]

i just tried with the oil filter on and i cranked for at least 10 seconds it didn't move

[jesilvas]

Ok so this is all from what I've read, no actual experience but it's better than nothing.
I mentioned that spring or valve or something around the oil cooler. Could be an issue.
We'll assume that LPOP is good since it's new.
There are cooling jets that spray the underside of pistons and I've read that those can break off and since they're no longer a jet, any available pressure is just dumping itself down there.

[protecdiesel]

i will search for valve in oil cooler