Diagram on engine block firing order and diagram

4.3L Engines Firing order: 1-6-5-4-3-2 Distributor rotation: Clockwise.

Did it backfire beofre you did the service? I'm guessing you have the wires mixed up.

Firing order 1-6-5-4-3-2, Distributor rotates clockwise

Hope this helps.

1-6-5-4-3-2
number 1 is the front Cyl on drivers side.
then it is #3 #5
Passenger side is #2 #4 #6
#1 on distributor cap is the front side of cap next
to the hold down screw clockwise side of the screw.
Firing order goes clockwise looking down on the distribuater.

THE FIRING ORDER IS AS FOLLOWS : 1-6-5-4-3-2.
CYLINDER NUMBERS (front-to-rear) :
LEFT (driver side) 1-3-5
RIGHT (passenger side) 2-4-6

To set ignition timing, ensure that engine is at operating temperature, (190 degrees or above), bypass EST (electronic spark timing) by unplugging the single tan wire with a black stripe from the distributor. Ignition timing should be set at 0 degrees or TDC (top dead center). If not, loosen distributor hold down bolt and adjust, then retighten.

For the 4.3L (6Cyl)
Firing Order:
1-6-5-4-3-2

Cylinders:
(back of engine)
| 6 |---------| 5 |
| 4 |---------| 3 |
| 2 |---------| 1 |
(front of engine)

Distributor:
...(back)
(+)..4...3
.5...........2
....6...1..(+)-screw
...(front)

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

Several engines here:
* 1.8L (B18B1 and B18C1) Engines Firing order: 1-3-4-2 Distributor rotation: Clockwise



* 2.2L (F22B1) and 2.3L (F23A1) Engines Firing order: 1-3-4-2 Distributor rotation: Clockwise



* 2.5L (G25A4) Engine Firing order: 1-2-4-5-3 Distributorless ignition system



* 3.0L (C30A1) Engine Firing order: 1-4-2-5-3-6 Distributorless ignition system (one coil per cylinder)



* 3.0L (J30A1) Engine Firing order: 1-4-2-5-3-6 Distributor rotation: Counterclockwise



* 3.2L and 3.5L Engines Firing order: 1-2-3-4-5-6 Distributorless Ignition System




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

My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.
I have only been a free contributor to this site for the past 4-months.

I do not know if you still need this information, but I am going ahead and answering it anyway.

The Dodge 3.9L (238 cubic inch) Engine from 1988 thru 1996 is the same:

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

Cylinders:
(back of engine)
6........5
4........3
2........1
(front of engine)

Distributor:
(back)
........3.....(+)-screw
..2
..................4
.1
.................5
(+)......6
(front)

Rotation Direction:
CLOCKWIZE

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

Again my apologies...

Firing order 12,734,568. Cylinder 1 is the front left wing seeing the engine cylinder 2 is right wing. DERCHO van left the odd couple. 1357 Left 2468 Right

2000 Chevrolet Astro Van 2WD
4.3 liter V-6

Here you go:
5.2L and 5.9L engines Firing order: 1–8–4–3–6–5–7–2 Distributor rotation: Clockwise

Diagram link below:

http://www.chiltonlibrary.com/content/images/7924/images/79243g14.gif

Best of luck!
Greg