Spark plug firing order diagram

theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
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For the Buick V6 231 3.8 liter turbocharged engine:
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Answers!
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Firing order:
1 - 6 - 5 - 4 - 3 - 2.
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Spark plug wire location on coil pack:
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Closest to the back of the car, left to right: 1 - 5 - 3.
Closest to the front of the car, left to right: 4 - 2 - 6.
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Spark plug wire location on engine:
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drivers side, front to back of car: 1 - 3 - 5.
passenger side, front to back of car: 2 - 4 - 6.
.----and this link shows the coil pack to cylinders
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3 8 Buick Turbo Engine Coil Pack Firing Order Spark Plug Wire Location

1-5-3-6-2-4 Clockwise alt="Cables order">

Greg Bernett 2821 Solutions February 14, 2010
You didn't post your engine size so please pick the applicable diagram:



1996-98 4.3L Engines Firing Order: 1-6-5-4-3-2Distributor Rotation: Clockwise



1996-98 5.0L, 5.7L and 7.4L Engines Firing Order: 1-8-4-3-6-5-7-2Distributor Rotation: Clockwise




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



4.8L, 5.3L and 6.0L Engines Firing order: 1-8-7-2-6-5-4-3 Distributorless ignition system (one coil on each cylinder)



5.0L, 5.7L and 7.4L Engines Firing order: 1-8-4-3-6-5-7-2 Distributor rotation: Clockwise

Source: spark plug wiring diagram for 98 tahoe

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  ledsled378 2926 Solutions July 24, 2010
  

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Source: Need diagram for spark plug wiring for 1997 Chevy

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  Dennis Weid. 44272 Solutions September 16, 2008
  

This was all I could come with, hope it helps.

There are 2 different V6 engines used in this year of Van, a 3.3 liter and a 3.8 liter. The diagram and firing order is the same for both engines. Below is the diagram from the service manual and the firing order.

The DTC (Data Trouble Code) P0305 is the generic OBD-II DTC for "Cylinder 5 Mis-fire Detected", and it means that the OBD-II control unit has detected a problem with the #5 cylinder.

The problem could be a faulty spark plug, or a spark plug wire for the #5 cylinder, or the coil for that cylinder could be faulty (2.7 liter), or the distributor or distributor cap could be faulty (3.0 liter), or the fuel injector for the #5 cylinder could be faulty.

Before you look for any electrical problems causing the mis-fire on the #5 cylinder, first do a compression check to be certain that the mis-fire is not caused by a mechanical problem.

Here are the firing order diagrams for the 2.7 and the 3.0 liter enginesto help assist you.


2.7 liter



3.0 liter

Here is the firing order diagram for that 5 cylinder engine, and the firing order is the same for the 2.3 and the 2.5 liter engines.

Here is the diagram you ask for. While it says it is for the 3.0L V6, it is the same for the 4.0L V6 if that's what you have...

1992 Mazda 929 3.0 liter DOHC V-6



Firing order 1-2-3-4-5-6 ------- front | 1 3 5 | of | | Distributor rotates clockwise vehicle | 2 4 6 | -------

I hope helps with this (remember rated this help) Good luck.

Here is the firing order.1 2 3 4 5 6

Here is a link of a site if you need.

http://autorepair.about.com/library/firing_orders/bl-fo-5195.htm

Good luck

1991-1994 2.9L and 3.0L Engines Firing Order 1-4-2-5-3-6 1995 And Later 3.0L V-6 With DIS Ignition System Firing Order 1-4-2-5-3-6
4.0L Engines Firing Order: 1-4-2-5-3-6 DIS Ignition System