Rolled my 4.0L, where did the oil go? What else might be wrong?

[Jateman419]

Hey y'all,
Rolled my 2006 4.0L. Seemed to start fine after righting it. Drove around the neighborhood and checked the oil. Barely registers. Blew some smoke at first, but not that much. My motor leaks ZERO oil. Not a smudge on the exterior of the motor. Any help? WTF happened to all the oil? Thanks all, any help would be awesome. Anything else I need to check out?

 

[RonD]

Depends on the angle it set at.
Oil would go up into valve covers thru the drain holes, and could go into Vent hose to air cleaner/air plenum, and/or PCV hoses and intake.

 

[Jateman419]

It was inverted upside down for about an hour. If all that oil accumulated up there in the intake process would it have cranked right over? Thanks

 

[RonD]

When you rolled it back over the oil would have drained pretty quickly back to the pan.
If upside down the PCV valve would be closed, the little ball inside would be blocking the hole to intake, but a little may have gotten in to intake.
Vent hose would put oil in air plenum(big air tube to MAF) or air cleaner housing.
So if you look in there you may see the residue.

Yes it would fire right up, since any oil in the intake from the PCV hose would tend to flow to just one or two nearby cylinders, that would be the smoke you saw.

 

[Jateman419]

Thanks Ron. I found a good bit in the plenum and most of it caught in the airbox and filter. I am assuming that once I clean it all including MAF from throttle body to air filter, I am good to go once I fill it with oil? Thanks again brudda

 

[RonD]

Yes, just general clean up of the parts should be fine, clean the vent hose as well.

From MAF(actually air cleaner) to throttle plate is considered a "ported" vacuum so an air leak in this part of the system will effect performance, since you will have it apart give it the "once over" for holes or cracks.
Throttle plate to intake valves is "regular" vacuum, decreases as RPMs go up
Air filter to throttle plate is "ported" vacuum, increases as RPMs go up, on carb engines ported vacuum was used for vacuum advance on distributors.
On MAF systems a ported vacuum leak is unreported air, so will lean the fuel air mix, just like a "regular" vacuum leak.

 

[pcollins]

I would check all the fluids after being upside down for an hour. Make sure nothing mixed, and that they're all topped off. Had one truck come in that wouldn't turnover after a rollover. Turned out the cylinders had filled up with oil and it hydro-locked it. Pulled the plugs, cranked it for about 15 seconds to clear the engine and it fired right up after replacing the plugs.