Firing order was wrong in my 318 Dakota I out the wires on according to Chilton book and now it runs worse and I dont remember what the original order was.

Computer box it is.

bettr chec um again--easy to confuse with distributers--the book u have may not tell all--library has chilton/mitchell sec629

Check for spark at the plug ( may have coil problem).
If spark is good then do a compression check. Pressure shouldn't be less than 75% of known good cylinders.

Get a book on the firing order. Look on internet also.

two firing orders for a 6 pot engine ,ford is ususlly 153624 but some vehicles use 142536 and no american vehicles are listed in my europeon alldata book but it has to be one or the other i think the first one --BUT__ i can still remember them from college 40 yrs ago pity i cannot remember what i had for breakfast

For the 1990 Dodge Dakota 318 cubic inch = 5.2L

Firing Order:
1-8-4-3-6-5-7-2

Cylinders:
..........(back)...........
|...8...|..........|...7...|
|...6...|..........|...5...|
|...4...|..........|...3...|
|...2...|..........|...1...|
..........(front)

Distributor:
............3
....4..............6...
.......................(+)-screw: rounded-end of Cap
8......................5
(+)-screw: square end of Cap
.....1...............7
..............2
.........(front)

Rotation: Clockwise

Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!

To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.
If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired.



4.5L and 4.9L EnginesEngine Firing Order: 1-8-4-3-6-5-7-2 Distributor Rotation: Counterclockwise

Hope helped with this (remember rated this help) Good luck.

Look at either a Haynes book or Chilton book, try the library thye usually have the books. Most have the pictures that are basically the same for all rear drum type brakes.

More than likely. Go to any auto parts store and they have a special tool for taking the gas fitting apart. (Very cheap)