Compression Ignition Addict
Join Date: Sep 2007
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If my memory serves me right, when you posted this earlier I noted that one or more injectors were probably injecting into weak cylinders and instead of the fuel being compressed and ignited during the compression stroke, worn or broken rings caused the fuel to slide down the piston walls and into the block.
Since you noted that there was 14 gallons of diesel in the oil, the oil was probably like watery soup and hence when the motor was turned off (fuel supply from the injectors shut down), the oil flowing thru the motor was so watery that it was passing thru the valve guides, pistons, rings and everywhere thereby allowing some further combustion post shut off.
Remember that diesels do not require an electrical ignition source. Provided they have fuel, air and compression that generates heat and ignition, the motors will keep running. I've seen tractors where the turbos have gone out pumping engine oil (which is used to lubricate the turbo) into the air intake and despite the fuel being shut off, the engine would rev uncontrollably until the block was drained of the oil. That, my friend, is one scary thing!
I would say you definately have tear down the motor and check for wear on each major component (e.g. crank, journals, etc). If the motor was ran for an extended period on the oil/diesel mixture, you probably have at minimum wear on the cylinders, etc.
Just my 2 cents.