Reply to Marc's Post: That part I know and understand. My question is what does "U" - "L" and "F" represent??? Which port on the carb is which?? Like I said two of the ports are on the throttle body and one a little higher on the carb body. Looking at the carb from the front of the vehicle the first port going clockwise is about 8:o'clock and 3/4" high just above the TB spacer; next is the idle mixture screw at about 8:45; next is the lowest port just above the manifold in the TB spacer at 10:00; and at about 10:15 and 1-1/2" up in the carb is the last port and it has a rubber cap (of course it is just a slip on cap, but why it is capped is what I don't know). The 8 o'clock port has a snout about 1-1/2" long (it is of course under the bowl and maybe that is why it is long?) the 10 o'clock port is short, only 1/2" and of course being on the spacer it is easy to see...but the one above at 10:15 is also longer-- about 1-1/4"....If these are the ports that correspond to the ( U - L - F ) and it looks like (if the diagram is right [I have the original diagram still on the vehicle and I also have the one you used but it is not correct according to the vehicle]then I can do it and no problem maybe?) The diagram you used (I got same one off AutoZone) is almost right but there is no VRV (FLTR?) that the "U" hooks to INSTEAD the line that hooks to U comes from the EGR through the BPT then the VCA just behind the Dist and to the "U" port --- "L" goes to the DIST and "F" to the Vacuum Reservoir... In that the two, U and L go to the DIST AND THE EGR but opposite on my original to the one you are using I am assuming (this is the problem, I don't know)they both supply vacuum ??? and the F does too I guess to the reservoir??? so then all three would have vacuum if that is true are they all a little different in the abount of vacuum they have? Again, I would like to know what those letters mean? Thanks cort

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REPLY:
That part I know and understand. My question is what does "U" - "L" and "F" represent??? Which port on the carb is which?? Like I said two of the ports are on the throttle body and one a little higher on the carb body. Looking at the carb from the front of the vehicle the first port going clockwise is about 8:o'clock and 3/4" high just above the TB spacer; next is the idle mixture screw at about 8:45; next is the lowest port just above the manifold in the TB spacer at 10:00; and at about 10:15 and 1-1/2" up in the carb is the last port and it has a rubber cap (of course it is just a slip on cap, but why it is capped is what I don't know). The 8 o'clock port has a snout about 1-1/2" long (it is of course under the bowl and maybe that is why it is long?) the 10 o'clock port is short, only 1/2" and of course being on the spacer it is easy to see...but the one above at 10:15 is also longer-- about 1-1/4"....If these are the ports that correspond to the ( U - L - F ) and it looks like (if the diagram is right [I have the original diagram still on the vehicle and I also have the one you used but it is not correct according to the vehicle]then I can do it and no problem maybe?) The diagram you used (I got same one off AutoZone) is almost right but there is no VRV (FLTR?) that the "U" hooks to INSTEAD the line that hooks to U comes from the EGR through the BPT then the VCA just behind the Dist and to the "U" port --- "L" goes to the DIST and "F" to the Vacuum Reservoir... In that the two, U and L go to the DIST AND THE EGR but opposite on my original to the one you are using I am assuming (this is the problem, I don't know)they both supply vacuum ??? and the F does too I guess to the reservoir??? so then all three would have vacuum if that is true are they all a little different in the abount of vacuum they have? Again, I would like to know what those letters mean? Thanks cort

That is almost the same diagram that is on my vehicle--Calif. 83 Ford Ranger 2.3L 4WD. Except "L" line is direct to DIST (no V REST or VCV)-- "U" goes to EGR with same inline components. "F" is the same connests only to the 2" VCS. I want to know what the leters "U", "L" & "F" represent? What distinguishs these ports? The two diagrams above are virtually the same -- the dist vacuum passes through a VCV and a V REST on the lower picture and the upper passes through a VCV & FLTR but the bottom connects to "L" (same as mine)& the upper connects to "L"??