No oil Pressure

[skydawg]

I changed filter cartridges and oil lines on the two canister filters on my ENDT 673 engine.I filled both filters with oil.That was six weeks ago.Finally started it,and after 30 seconds of idling,zero oil pressure,according to the gauge.I would always get 60 psi showing within 5 sec.The dash gauge appears to be fed from a line going to the turbo.Is there a way to positively check that I have or don`t have pressure in the engine? Thanks.

[h67st]

You could pull the gauge line off where it comes off the turbo, crank the engine with the shutoff pulled and see if oil pumps out.

[mowerman]

That’s kind of scary. Did you check and make sure the pan is full?

[mowerman]

What I changed mine I only had 20 pounds. I turned it right off and discovered it needed more oil. Good luck.

[skydawg]

Oil spurted out of the big filter when I opened the vent and cranked the starter,but no oil going to the turbo feed line,and therefore none to the gauge.If anyone in northwest NJ is interested in a pretty nice single axle B61,I`m ready to move on.

[mowerman]

OK, that’s funny. Shit thats what I think about the DM. Sometimes I wish I could just twitch my nose and it would disappear…. Bob 

[steve s.]

Don't sell your truck!  If you had oil pressure before your oil change, you should still have oil pressure. You probably need to bleed air out of the filter.  Do you have the large full flow/ bypass filter? That is the one with 3 lines on the bottom. If you had some oil come out the vent, you must have some pressure. They can take a bit to get all of the air out as I recall. There are several places on the drivers side of the engine where you can pull out a plug and install a test gauge, if you need to. Good luck.

[Geoff Weeks]

If it were me, I would run it a bit longer. No load, not above idle, but let it go for a full minute or more. There is lube on the bearings and crank, even if it is not pressurized, it isn't dry. It may take a bit to force the air out.

[other dog]

15 hours ago, mowerman said:

OK, that’s funny. Shit thats what I think about the DM. Sometimes I wish I could just twitch my nose and it would disappear…. Bob 

I've felt that way about the big green International that runs now a few times myself!

[mowerman]

Yes, I’ll bet you did… bob

[other dog]

18 hours ago, mowerman said:

What I changed mine I only had 20 pounds. I turned it right off and discovered it needed more oil. Good luck.

I don't know what's going on with the oil in the big green International that runs now either. It always had good oil pressure, and the oil looks clean. I check it often and it was always in the "safe" zone on the dipstick, not down to the "add" line, but not quite full.

We drove it in the "Trucker's Parade Against Cancer" a few weeks ago, and it was about a 100 mile round trip. It was mostly at highway speed except for about 10 miles that made up the actual parade route. The next time I checked the oil after the parade there was barely a drop of oil hanging onto the end of the stick. So I messaged the guy I bought the truck from to see if he ever changed the oil and what kind of oil he put in it if he did. He said Mobil Delvac, 10W-40. So I went to NAPA and got a gallon of 15W-40 Delvac and a bottle of Lucas. I put the Lucas in and about 2 quarts of oil, and it was back up to the full mark. 

Then the next time I checked it, after just being driven in and out from under the carport a few times, it showed way over full. I let it run for about 5 minutes the other day, shut it off, waited 5 minutes, and it still shows over fill. It's about a half inch over the full mark on the stick now, but I don't know what made it show no oil at first, then I fill it, then it showed being too much oil. 

It smokes a little when you first start it, but I should have known that it didn't use 3 quarts of oil in a 100 miles.

[MACKS]

Are  you gonna drain some out,not good to be overfilled?

[other dog]

1 hour ago, MACKS said:

Are  you gonna drain some out,not good to be overfilled?

Well, I considered it, but then I thought it might be best to leave it alone. A half inch over the full mark shouldn't be enough to hurt anything- I hope!

And I always wipe the dipstick off before I put it back, so that's lowering it too, a little bit at a time 🤣 

[skydawg]

No pressure after a minute  and 20 secs.So I`ve run the engine for a total of 2 1/2 minutes with no oil to the turbo.

[mowerman]

That sucks sorry

[Geoff Weeks]

Manual gauge to confirm the reading, then a look at the pressure relief. No idea where it is on that system. Other hopefully will.

 I have seen more than once, where an oil change will stick the relief open. Got a bunch of theories why it happens but no proof of cause.

 Mostly it was on Big Cam Cummins and the pump and valve are external to the pan on those engines, so not too big a deal.

If the oil pump/ relief is in the pan, then check your bearing clearance while it is down. 

[mowerman]

I was thinking the same thing high-pressure release valve  stuck open or somebody mentioned there’s also a check in the oil  pot I just recently changed mine cartridge, clean the pot up real good. I did not see a check valve in there.

[mowerman]

I would definitely be afraid to keep running it. Good luck, bud.

[MACKS]

6 hours ago, other dog said:

Well, I considered it, but then I thought it might be best to leave it alone. A half inch over the full mark shouldn't be enough to hurt anything- I hope!

And I always wipe the dipstick off before I put it back, so that's lowering it too, a little bit at a time 🤣 

Ok my bad,I must of miss read,thought it was way over..carry on…

[other dog]

36 minutes ago, MACKS said:

Ok my bad,I must of miss read,thought it was way over..carry on…

And then I check it today and it's back between the "add" and "full" lines. So I don't know what's going on there, but it apparently has oil in it anyway.

[mowerman]

Tom, that’s just really weird

[skydawg]

8 hours ago, Geoff Weeks said:

Manual gauge to confirm the reading, then a look at the pressure relief. No idea where it is on that system. Other hopefully will.

 I have seen more than once, where an oil change will stick the relief open. Got a bunch of theories why it happens but no proof of cause.

 Mostly it was on Big Cam Cummins and the pump and valve are external to the pan on those engines, so not too big a deal.

If the oil pump/ relief is in the pan, then check your bearing clearance while it is down. 

Unfortunately,that can`t happen on my watch.I`m far from being a mechanic,and the code readers around me aren`t interested.Guys who know these trucks have passed or are too old to care.

[Mark T]

Maybe retrace your steps through changing the lines ?  Are you sure the new lines are restriction free ? Back on where they belong ?   If that's the area where you didn't have this issue until it was touched , I'd revisit those steps before looking for some other explanation. One thing's for sure, the turbo isn't going to live too long spinning without oil. Not doing the rest of it any good running without oil either.

[Joey Mack]

if the turbo feed line is a new rubber line with buildable ends, take the line off zip tie a shop rag over one end leaving it like a little bag, and blow air through the other end to see if its clogged.  the rag will catch any loose peices,that way you can say ''I found something''  other wise it blows across the shop and you wont know it..  if the buildable fittings arent put together with care, they will cut the inside of the hose and a half moon shape of rubber will get lodged in the fitting and restrict flow..   Jojo

[skydawg]

Can an oil line to the filter ever need to be primed? The filter is a Luberfiner 272-c.It has inlet and outlet check valves.I had the canister out,hoses disconnected for a couple of months,so when I installed it and filled it with oil,the check valves would have been closed,and any air in the hoses would be there when I started the engine.This is a second filter,it appears it`s job is to filter oil going to the turbo.