Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1985CENTURY V6-231 3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSFUEL LINE - O-RINGS COMPOSITION
1985 Buick Century V6-231 3.8L
Fuel Line - O-Rings Composition
1985 Buick Century V6-231 3.8LSECTION Fuel Line - O-Rings Composition
Bulletin 85-6C-6
Date Oct. '84
Ref. No. 85-051-6C
SUBJECT: FUEL LINE O-RINGS
MODELS AFFECTED: 1982-1985 MODELS
The fuel line O-rings (feed and return lines) used on many 1982-1985 engine applications are made of Viton. The Viton O-rings (Viton is a type of rubber) are brown in color. They are less affected than rubber by the additives used in many of the fuel blends available today and therefore should not be substituted with other type rubber O-rings. The following are the part numbers used on the above applications:
Group Part No. Usage
3:163 22514722 Feed Line
3:163 22516256 Return Line
Date Oct. '84
Ref. No. 85-051-6C
SUBJECT: FUEL LINE O-RINGS
MODELS AFFECTED: 1982-1985 MODELS
The fuel line O-rings (feed and return lines) used on many 1982-1985 engine applications are made of Viton. The Viton O-rings (Viton is a type of rubber) are brown in color. They are less affected than rubber by the additives used in many of the fuel blends available today and therefore should not be substituted with other type rubber O-rings. The following are the part numbers used on the above applications:
Group Part No. Usage
3:163 22514722 Feed Line
3:163 22516256 Return Line
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.