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pointrow · 05-18-2017, 05:58 PM

You would be amazed how long an engine will run with no oil before lockup.
There was a video on u-tube of a Jd 4230 that was in the Texas buy up of older diesel tractors that were deemed pollution contributors. The program had the owner bust a hole in the block and frame to get there money.
This guy decided to drain the oil and coolant and run it till it quit.
It took 45 min till locked up at wide open throttle.

I would claim vandalism with your insurance company.

good luck

pointrow

J2Jake · 05-20-2017, 03:35 PM

Can someone tell me why the ECM would not have put the motor in Limp mode as soon as oil pressure was lost? I had a oil pressure sending unit fail and my motor went to limp[ mode. And motors will run longer than you think with no oil.

Twomed · 05-20-2017, 03:56 PM

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Unplanned Tourist · 05-20-2017, 04:28 PM

Quote:

Originally Posted by J2Jake

Can someone tell me why the ECM would not have put the motor in Limp mode as soon as oil pressure was lost? I had a oil pressure sending unit fail and my motor went to limp[ mode. And motors will run longer than you think with no oil.

It depends how the ECM was programed. They can be programed to just give a warning, go to power de-rate or shut down. Lots of people don't like the shut down or de-rate, so it's just set to give a warning which should be a light and an audible buzzer or something.

mackwrench · 05-20-2017, 04:41 PM

Quote:

Originally Posted by J2Jake

Can someone tell me why the ECM would not have put the motor in Limp mode as soon as oil pressure was lost? I had a oil pressure sending unit fail and my motor went to limp[ mode. And motors will run longer than you think with no oil.

It will. It can also be programmed to shut down.

Piker · 05-20-2017, 07:10 PM

Been down a similar road with our daily driver Kia Sportage. A few years back I changed the oil and filter... Apparently when I took the filter off, the rubber gasket stuck to the filter mount on the engine. I didn't notice, and screwed the new filter on. The double seal lasted about 2 weeks and then it let go all at once while cruising down the interstate. I never knew it until I pulled into a toll booth and heard the engine knocking something fierce. No check engine light... No oil pressure light.

I was told by several mechanics that any film of oil left in the pump would allow it to move enough air to the sensor that low pressure would never be detected. I never heard that before, but it explained why there were never any indicators on the dash.

The car only had 7000 miles on it. Engine was trashed. Insurance company foot the bill for $8k to have a new engine put in the car.

Now when the air cleaner boot on our motorhome failed and dusted the engine, the insurance company wouldn't cover a dime.

Sorry for your troubles... Good luck.
Cheers

barmcd · 05-20-2017, 08:22 PM

Quote:

Originally Posted by Piker

Been down a similar road with our daily driver Kia Sportage. A few years back I changed the oil and filter... Apparently when I took the filter off, the rubber gasket stuck to the filter mount on the engine. I didn't notice, and screwed the new filter on. The double seal lasted about 2 weeks and then it let go all at once while cruising down the interstate. I never knew it until I pulled into a toll booth and heard the engine knocking something fierce. No check engine light... No oil pressure light.

I was told by several mechanics that any film of oil left in the pump would allow it to move enough air to the sensor that low pressure would never be detected. I never heard that before, but it explained why there were never any indicators on the dash.

The car only had 7000 miles on it. Engine was trashed. Insurance company foot the bill for $8k to have a new engine put in the car.

Now when the air cleaner boot on our motorhome failed and dusted the engine, the insurance company wouldn't cover a dime.

Sorry for your troubles... Good luck.
Cheers

I had that happen to me with a '92 Olds 88. Luckily, the two rubber o-rings made a lousy seal and oil leaked immediately. I was checking the level with the dipstick and could see the oil puddling under engine.

Ray,IN · 05-22-2017, 01:58 PM

I doubt this was a long-term conditon, leaking oil. I thought all newer diesel engines had a start delay in the ECM that would not allow the engine to start until oil pressure was detected. Many years ago dry-starts were the norm, engine started, then developed oil pressure.
Mackwrench knows more than I about that.
I vote for the vandalism theory, however, there should still be signs of oil stains where the MH was parked the previous night.

W5CI · 05-22-2017, 02:09 PM

I would take it to Cummins and ask that they pull the rod and Main bearings, if they look ok have them replaced and go from there. if it will start and run with making lots of noise now, new bearings and maybe a turbo should fix it. good Luck

deandec · 05-23-2017, 11:07 AM

Get a second opinion before spending thousands of dollars.

Cheaper to pay for a tow than a turbo charger or engine replacement.....

8TiresRollin · 06-17-2017, 10:36 AM

You may be lucky. Some good suggestions. But cutting the filter and looking for white metal may be fruitless as it was still lubing the engine until it went dry then there would be no oil running through bearings and filter so no evidence of wear. If the turbo was running then it definitely needs to be replaced as oil is what cools the bearing. Removal of the pan to inspect the rod and main bearings (and cam if they can see the bearings) will be required but running the engine that long without lube might be pure luck if it is basically ok. I would say screw everyone else and I would stop if my oil pressure went to zero and call a cop for assistance with red/blues if I was in a dangerous spot - or ask everyone for a $500 donation for me to get out of the way so they could pass LOL