I need the vacuum diagram for 1986 ford truck with a300 6cil
Short of a Haynes or Chilton repair manual for pickups covering your year's truck, I don't know if you could find a vacuum diagram easily on the internet. However a google search might give you a strand of hope. That was about the year that ford (and all of them to be sure, to some extent or another) went crazy with vacuum controlled emissions and operations. As soon as they grudgingly accepted fuel injection over carburetors as the reality, all those crazy vacuum diagrams disappeared. They met emission regulations through better computer management operations. Sigh, I'm still reliving the nightmare of electronically controlled carburetors (feedback carburetors, as your ford is called-works real good when it is working good) via my 1987 sentra with two solenoids in the carburetor for fuel-air mixture control- now I'm looking for a replacement carburetor. You would not believe the virtual array of vacuum lines on my sentra. They even included a long stack of metal tubes across the top of the engine, lol.
Anyway, by now that truck is so old, what do you need beyond the brake booster hose, the vacuum advance to the distributor, if you have a MAP sensor equipped, that is a straight manifold tap, and then a tap for the egr valve, maybe controlled by a thermal switching valve-you know, when the coolant is hot, the valve switches air, or vacuum really, to the egr valve. Your charcoal canister would have, I think, a manifold vacuum hose. I might be missing a few, but you might be able to struggle through it. If you have a working smog pump, maybe called an air pump, you will really need a vacuum diagram. There should be several older ford truck enthusiasts forums that you could join. Somebody would surely have it.
Mar 06, 2015 |
Ford Cars & Trucks