Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
On your Deville, looking from in front of the car into the engine compartment the cylinders are numbered like this:
1 3 5 7
2 4 6 8
The firing order is 1 2 7 3 4 5 6 8
Since this engine does not have any distributor or any spark plug wires, that is all the information that the manufacturer provides as far as what order the cylinders fire in.