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Buick 25043669 Valve, Crankcase Vent (Pcv)

1985-1986 Buick

Customer Questions & Expert Answers (8)
GM 25043669 Valve, Crankcase Vent (Pcv)
  • Part Description
    VALVE, Engine Crankcase
  • Manufacturer
    General Motors
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$12.60
1
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number25043669
    Part DescriptionVALVE, Engine Crankcase
    Other NamesPCV Valve
    Item Dimensions13.3 x 3.1 x 1.4 inches
    Item Weight1.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU25043669
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1985-1986 Buick Century4 Cyl 2.5LCUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR
    1985-1986 Buick Skylark4 Cyl 2.5LCUSTOM, CUSTOM 4 DOOR, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, SOMERSET, T-TYPE
    1985-1986 Buick Somerset4 Cyl 2.5LCUSTOM, LIMITED, LIMITED 2 DOOR, REGAL, REGAL LIMITED, SOMERSET, T-TYPE
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 25043669 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    What Are the Procedures for Checking and Maintaining Positive Crankcase Ventilation (PCV) System and PCV Valve for Buick Skylark,Oldsmobile Omega and Pontiac Phoenix? Posted by Customer
    A:
    To solve this problem, the positive crankcase ventilation (PCV) system circulates fresh air through the crankcase in order to pick up blow-by gases, which are then rerouted back to the engine through a carburetor. Vacuum hoses and a PCV valve, which regulate the flow of gases according to engine speed and manifold vacuum, are the main components of this system. Carbon and gunk that accumulate in the PCV valve and hoses over time may cause them to jam, hence regular scrutiny is needed to ensure they function properly. Poor idling or reduced idle speed may indicate a restricted or stopped flow in the system. To test for proper vacuum pull off the top plate of the air cleaner and remove the hose leading to the small PCV filter. While your engine is idling put your thumb slightly on towards the end of this hose. A feeling as if there is a slight pull or suction tells that air is being drawn through it. If any vacuum is felt there should be further checks since low or no vacuum will mean that blocking has taken place within this system. By shaking it you can check whether the PCV valve clicks; if it does not, it should be replaced because its check needle does not work properly anymore. When running at idle speed with valve removed, engine should result in a relatively strong vacuum pressure. If there's no or very little difference felt in terms of vacuum pressure either way it might indicate blocked vacuum hose or inlet fitting at engine manifold. Clearing out passages clogged at manifold or carburetor require thorough cleaning, while failure of pcv valve necessitates replacement thereof. When buying a new one for your engine just make sure that you don't get something else instead of genuine PCV valves.
    Posted by GMPartsGiant Specialist
    Q:
    How do you remove and install the PCV valve for the 1977 Buick Century? Posted by Customer
    A:
    To remove and install the PCV valve, pull the valve and hose straight out of the valve cover or manifold. Use pliers to slide the hose clamp, if equipped, down the hose and off the valve connector. Twist the valve gently to loosen it from the hose and remove it. Inspect the hose and valve cover grommet, and replace them if they are hard, brittle, or cracked. Clean the hose with solvent if it is clogged. Install the valve into the hose, ensuring it seats fully. Attach the hose clamp, if equipped, around the valve assembly. Finally, install the PCV valve in the grommet, making sure it seats fully in the cover grommet.
    Posted by GMPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    Where is the PCV valve located for the 1984 Buick Skylark? Posted by Customer
    A:
    The PCV valve is located on a rocker arm cover.
    Posted by GMPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    How do you replace the PCV valve for the 1991 Pontiac Firebird? Posted by Customer
    A:
    To replace the PCV valve, first, pull the valve (with the hose attached) from the rubber grommet in the rocker arm cover or manifold. Then, loosen the retaining clamp and remove the PCV valve from the end of the hose, taking note of its installed position and direction. Compare the old valve with the new one to ensure that they are the same. Push the new valve into the end of the hose until it is properly seated, and then reinstall the clamp. Inspect the rubber grommet for any damage and replace it with a new one if necessary. Finally, securely push the PCV valve and hose into position.
    Posted by GMPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    Where is the PCV valve typically located for the 1983 Oldsmobile Cutlass? Posted by Customer
    A:
    The PCV valve is typically located in one of the rocker arm covers on the side of the engine.
    Posted by GMPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    How do you check the PCV valve on the 1988 Pontiac Grand Prix? Posted by Customer
    A:
    Locate the PCV valve in the valve cover or intake manifold behind the throttle body on 3.4L engines. While the engine is idling at normal operating temperature, remove the valve from its rubber grommet. Cover the valve's end with your finger and check for vacuum. If there's no vacuum, inspect for blockages in the hose, manifold port, or the valve itself. Replace any obstructed or deteriorated hoses. Turn off the engine, shake the PCV valve, and listen for a rattle. If there's no rattle, replace it.
    Posted by GMPartsGiant Specialist
    See expert answers on similar PCV Valve
    Q:
    What should you inspect at the rocker arm cover on the 1984 Pontiac Fiero? Posted by Customer
    A:
    Inspect the rubber grommet at the rocker arm cover for damage and replace it with a new one if needed.
    Posted by GMPartsGiant Specialist
    See expert answers on similar PCV Valve
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 25043669, the Right Choice

To ensure reliability, purchase GM part # 25043669 Valve, Crankcase Vent (Pcv). It is sometimes referred to as Buick PCV Valve. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Buick Century, Skylark, Somerset models.

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