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If you type that exact same question into Google or another search engine, you will see all the diagrams you need to get your answer. Took me 10 seconds.
go google and type in ---firing order for buick engines-- there will be diagrams and rotation direction for the firing order
books seldom have it wrong mostly it is the person doing the job that has the distributor in the wrong place or is wiring 180 degrees out
I do not have a breakdown diagram for a distributor, but just the firing orders and description of ignition system for the Dodge Colt and related models (based on Chilton manuals) if that's what you're looking for:
FIRING ORDERS
Fig. 1: 1990 1.8L SOHC Engines Firing order: 1-3-4-2 Rotation: clockwise
To avoid confusion, replace spark plug wires one at a time.
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Distributor REMOVAL & INSTALLATION
Although the distributor can be removed from the engine no matter which cylinder is about to fire, it is a good idea to have number one cylinder at TDC before distributor removal.
1.5L, 1.8L, 2.4L SOHC Engines
Disconnect the negative battery cable.
Disconnect and tag the spark plug wires from the distributor cap.
Disconnect the distributor harness connector.
Fig. 1: Ignition system for the 2.0L engine
Fig. 2: Ignition system for the 1.5L engine
Fig. 3: Ignition system for the 1992-93 1.8L engine
Fig. 4: Ignition system for the 2.4L engine
Loosen the distributor retaining bolt and remove the distributor from the engine.
To install:
Rotate the engine until No. 1 cylinder is at TDC on its compression stroke.
NOTE: Be careful not to turn it to the No. 4 cylinder TDC on its compression stroke by mistake.
Align the distributor housing and gear mating marks.
Fig. 5: Ignition system for the 1990 1.8L engine
Fig. 6: Distributor installation for the 1990 1.8L engine
Fig. 7: Distributor installation for the 1992-93 1.8L engine
Install the distributor into the engine, while aligning the fine cut (groove or projection) on the distributor flange with the center of the distributor mounting stud.
Install and tighten the distributor retaining bolt.
Reconnect the distributor harness connector.
Fig. 8: Distributor installation for the 2.4L engine
Fig. 9: Distributor installation for the 1.5L engine
Fig. 10: Distributor installation for the 2.0L engine
Check the intake manifold...the firing order on my Dakota is cast on the surface of the manifold. If it's not there, ask your parts store guy if they have the information.
it has 6 plugs
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