Valve cover Holes

Asked by Dec 18, 2017 at 09:38 PM about the 1977 Ford F-100

Question type: Maintenance & Repair

i have holes in my valve covers the passenger side hole has a pcv valve that goes to a hose that hangs loosly open ended the driver side goes to a hose that connects to the base of the carburetor in the from and has an oil filler cap on it I just want to know where these hoses actually go

4 Answers

7,170

pictures?

1 people found this helpful.
36,945

The PCV hose ran to a manifold vacuum source, I'm a little fuzzy on your description of the other hose, but it sounds like the crankcase breather, it would have plugged into the air cleaner assembly through a grommet with some filter material behind it. These would be the crankcase breather & PCV system; the breather allows filtered air into the top of the engine while blowby gasses are sucked out of the other side of the engine through the PCV valve.

1 people found this helpful.
36,945

A diagram for a 78 Ford truck:

1 people found this helpful.
80,395

The PCV valve plugs directly into the oil filler cap. The hose from the base of the carburetor goes to the PCV valve. On the other side the hose from that valve cover goes to the air cleaner. There's a crankcase ventilation filter on the inside of the air cleaner that the hose from the valve cover connects to. HTH. -Jim

Your Answer:

F-100

Looking for a Used F-100 in your area?

CarGurus has 4 nationwide F-100 listings and the tools to find you a great deal.

Postal Code:

Ford F-100 Experts

  • #1
    tennisshoes
    Reputation
    510
  • #2
    MrBlueOval
    Reputation
    320
  • #3
    Rowefast
    Reputation
    290
View All

Related Models For Sale

Used Ford F-150
122 Great Deals out of 11,133 listings starting at $369
Used Ford F-250
1 listing
Used Ford Mustang
28 Great Deals out of 1,227 listings starting at $3,995
Used Ford F-350
2 listings
Used Chevrolet Camaro
9 Great Deals out of 1,004 listings starting at $4,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.