Hi AllI have checked both the primary and secondary filters, both completely full of fuel, so if I understand correctly, that eliminates the fuel issue.When I turn on the key to start there is no light up of the start and check engine light Sammy mentioned at all. The only light that lights on the dash is the low oil pressure and both low air pressure lights. I reviewed the manual at least a dozen times and there are no ATEC and DDEC switches that I can find on the coach. There is no diagnostic request switch on the dash or in the street side electrical compartment. The only thing that looks anything like what you might be mentioning is what appears to be a diagnostic port in the rear fuse box over the engine. This is a flat connector that has 7 or 8 round holes for what appears to be a dignostic machine hookup.Full engine coolant, full oil level.Here is where it gets confusing to me. The book, Series 92 Service Manual from Detriot, doesn't mention a DDEC but it mentions an ECM and other electrical components and yet when I compare the pics in the book to what I have in the coach they don't match, I definately have a stop fuel lever on top of a flat plate above the ECM. There is another lever on the plate also that is connected to the throttle. The stop fuel lever is in what I believe to be the start position toward the rear of the coach against an air operated plunger. I would like to believe that I have a DDEC but I am questioning that now given not all the things are there and somethings that shouldn't be there, like a fuel cutoff lever, are there. I have looked everywhere for any fuses that might be for a DDEC with no luck.I tried the starting ether at least 4 or 5 times. The engine attempts to start but as soon as the ether runs out it quits.I am still looking for things to check. Any more help guys? This started with topping off the tank from 1/2 tank to a full tank with diesel.Rob91 LeMirage XLMissouri