Question about 2003 Buick Century

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Locating spark plugs on 2003 buick century

I need to locate all 6 spark plugs on a 2003 buick century to tune it up

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I am assuming you have a 3.1 v6 engine the spark plugs are 3 right in the front next to the oil dipstick and above the exhaust manifold you can follow the wires from the coil to find each plug. The other 3 are on the back side of the engine and can be difficult to get to. Easiest way is to remove the upper engine mounts and tilt the engine forward a few inches with a ratchet strap or something to gain clearance. MAKE SURE it is secure because your arms will be back there. And those three plugs are in the same location as others just on the opposite side of the engine.again just follow spark plug wires down to the plug.

Posted on Jan 03, 2017

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Tune-up 2003 buick century locating spark plugs


I am assuming you have a 3.1 v6 engine the spark plugs are 3 right in the front next to the oil dipstick and above the exhaust manifold you can follow the wires from the coil to find each plug. The other 3 are on the back side of the engine and can be difficult to get to. Easiest way is to remove the upper engine mounts and tilt the engine forward a few inches with a ratchet strap or something to gain clearance. MAKE SURE it is secure because your arms will be back there. And those three plugs are in the same location as others just on the opposite side of the engine.

Jan 01, 2017 | 2003 Buick Century

1 Answer

What is the firing order for 2003 Buick Century 3.1 engine?


Literally 1-2-3-4-5-6, spark plug wires go 1-4, 6-3, 2-5 from passenger side to drivers side.

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1 Answer

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1 Answer

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The firing order for a 4-cylinder 2.2L Buick Century is: 1-3-4-2. The distributor rotates in a clockwise direction, with #1 plug wire located at the upper left of the distributor The firing order on a 3.1 v6 is simple. 1-2-3-4-5-6 See a diagram of the 3.1 and 3.8 here. http://www.2carpros.com/forum/1999-buick-century-spark-plug-firing-order-vt177159.html http://autorepair.about.com/od/enginefiringorders1/

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