1990 fleetwood cadi fwd 4.5. Firing Order Is it 18436572 also where does number 1 go?

Answer 1

Referenced from 'Chilton 28540 Deville/Fleetwood/Eldorado/Seville 1990-98 Repair Manual' Page 2-10, Fig. 28: 4.5L and 4.9L Engines 1-8-4-3-6-5-7-2, Distributor Rotation Counterclockwise. Number 1 Plug is in reference to facing front of motor, first(1st)Cylinder, right side. Page 2-10, Fig. 29: 4.6L Engines 1-2-7-3-4-5-6-8, Distributorless Ignition System. Number 1 Plug is in reference to facing front of motor, Third(3rd)Cylinder, right side. This information should also be cast into the intake manifold.

The location of #1 wire should be marked on the distributor cap, but this assumes that base ignition timing is set correctly. If you've rotated the distributor, do the following:

1) Rotate the engine to #1 TDC. This means that the timing marks line up to #1 and that cylinder is on the compression stroke. It is on the compression stroke when you can't hold your finger over the spark plug hole while rotating the crank pulley clockwise.

2) Remove the distributor cap.

3) Loosen the distributor hold-down.

4) Rotate the distributor until the rotor points at the #1 terminal.

5) Reinstall cap and #1 spark plug and wire.

6) Warm up the engine, then put PCM it in set-timing mode using the climate control head.

7) Set base timing using a timing light.