Buick Regal 2018-2025 Service Manual / Engine / Firing Order and Cylinder Identification
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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Specifications, Schematic Wiring Diagrams
Specifications
FASTENER SPECIFICATIONS (OFF VEHICLE)
Single Use Non-Threaded Fasteners/Components
NOTE:
All fasteners/components listed in this table MUST BE DISCARDED and replaced
with NEW
after rem
SEE MORE:
Cylinder Head Assemble
Special Tools
EN-50717 Valve Spring Compressor
EN-9666 Valve Spring Tester
EN-43963 Valve Spring Compressor (off car)
For equivalent regional tools, refer to Special Tools.
1.
CAUTION: Refer to Component Fastener Tightening Caution.
CAUTION: In order to avoid damage, install the spark plugs af
Securing Child Restraints (With
the Seat Belt in the
Front Seat)
This vehicle has airbags. A rear
seat is a safer place to secure a
forward-facing child restraint. See
Where to Put the Restraint.
In addition, the vehicle has a
passenger sensing system which is
designed to turn off the front
outboard passenger frontal airbag
and knee airbag under certain
conditio
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