I need a complete vacuum diagram for a -1979'- F250 4x4 w/5.8l 351M

Look on the VECI label (Vehicle Emissions Control Information) under the hood, likely on the radiator support. The vacuum diagram should be shown there.

Hi there:
I suggest to check this diagram on...
Ford Engines: 5.0L HO, 351W, 351M, 351C, 400




Ford Engines: 5.0L HO, 351W, 351M, 351C, 400:
Rotation: Counter-clockwise
Firing Order: 1-3-7-2-6-5-4-8

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Hi there:
I suggest to check this diagram on...
Ford Engines: 5.0L HO, 351W, 351M, 351C, 400




Ford Engines: 5.0L HO, 351W, 351M, 351C, 400:
Rotation: Counter-clockwise
Firing Order: 1-3-7-2-6-5-4-8

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

here ya go,don't ever let anyone tell you that they CAN'T get something.

http://images.gtcarlot.com/customgallery/engine/40960853.jpg ford f250 4 6 v8 vacuum hose diagram Bing images

Hello, here is a vacuum diagram for a vintage big block mustang with no emissions, it will work on a 2 barrel or a 4 barrel carburetor, if you run your lines like this and get rid of the other BS it will run sooo much better, also you can delete the blue stripe wire if you have an aftermarket air cleaner.
best of luck!

Click image for zoom...



Fig. 9: Emission control system-1993 gasoline engines



Fig. 10: Emission control system-1993 diesel engines

Hope helps.

Hello redeemer524,

Below is the diagram. I hope this helps.



Regards,
netvan

Click over diagram for zoom...

Fig. 6: Vacuum schematic - 351M engine

Fig. 7: Vacuum schematic - 351M engine


Hope this helps (remember to rate and comment this answer).

Check this diagrams....



Fig. 9: Emission control system vacuum diagram-1984 Z20 (49 States & Canada)




Fig. 10: Emission control system vacuum diagram-1984 Z24 (49 States & Canada except High Altitude)





Fig. 11: Emission control system vacuum diagram-1984 Z24 (49 States High Altitude)




Fig. 12: Emission control system vacuum diagram-1984 (Calif. w/MT)




Fig. 13: Emission control system vacuum diagram-1984 (Calif. w/MT)


Hope helps (remember rated this).

you need to find your decal on the underside of hood or on the shield above the radiator cooling fan.

1997 PCED OBDII-A SECTION 1A: Description and Operation
Vehicle Emission Control Information Decal Each vehicle has a decal (Figures 1 and 2) containing emission control information that applies specifically to the vehicle and engine. The specifications on the decal are critical to servicing emissions systems.

typical decal


Figure 1: Typical Vehicle Emission Control Information Decal for 49 States Vehicles




Figure 2: Typical Vehicle Emission Control Information Decal for California Vehicles




Figure 3: Typical Vehicle Emission Control Information Decal for Canadian Vehicles. In addition to the tune-up specifications and procedures, the emission decal shows a color-coded (shown in black and white) schematic of the engine vacuum system. The color coding on the schematic represents the actual color coding on the vacuum hoses. However, there will be instances when a hose color does not match the color on the decal.
Decal Location Typical location of the decal will be on the underside of the hood or the radiator support sight shield.