Buick Regal: Firing Order and Cylinder Identification

NOTE: This information is intended as a quick reference for firing order and cylinder identification only. The information provided covers many vehicles and may include some information that does not apply to the vehicle you have currently selected.

3 CYLINDER ENGINE

4 CYLINDER ENGINE

5 CYLINDER ENGINE

IN-LINE 6 ENGINE

V6 ENGINE

3.5L VIN 4 V6 Engine

3.8L & 4.3L V6 Engines

All Other V6 Engines Except 3.5L (VIN 4), 3.8L & 4.3L

8 CYLINDER ENGINE

4.0L, 4.4L & 4.6L V8 Engines

5.0L, 5.7L (VIN R & VIN K) & 7.4L V8 Engines

6.6L Diesel V8 Engine

All Other V8 Engines Except 4.0L, 4.4L, 4.6L, 5.0L, 5.7L (VIN R & K), 7.4L & 6.6L

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