I started working on my '69 F-350 Dual Rear Wheel truck again and I'm having Carburator problems. It is a Ford 2-Barrel on my 360 Engine. When trying to adjust it, I could only find one adjuster screw. After giving it one last try (it was running way too lean and was starving for gas), I decided to rebuild it. When I pulled it and flipped it over, I verified that it only has one adjuster screw. Is this correct? My mechanic friend is also having a hard time believing that it only has one screw. We both figure that there should be two. One for the Gas and one for the Air. ???
I believe it is the original Ford (Motorcraft?) Carb, although I couldn't find any name on it and no numbers that made much sense to me. It was pretty dirty though and some numbers may show up when we rebuild it. I also believe it is the original '69 Carb that came on the engine.
Have you or anyone out there ever heard of one that had only one adjuster screw?
if its a two barrel it should have two adjusting screws. if one had loosened up and came out then you would have a vacuum leak and indeed have a lean running condition. it may just be as simple as finding a replacement screw and replacing it.
Rich 1973 f350 super c/s 460/c6 22k orig miles 1972 f350 srw crewcab special 390 1972 f250 ranger XLT Camper Special 390 1972 f250 4x4 custom 84k og miles 390 1971 f250 4x4 sport custom 56k og miles. 360 1970 f250 4x4 428 fe hp60 205 d60 Dont eat yellow snow.....
Well that is the strange thing. I couldn't find another place for it. There does look like a place where it could be drilled and tapped, but it is solid metal. I even had my 45 year mechanic friend look at it. Could it be possible that I have some kind of non-original replacement carb?
Appreciate the pictures. It sure does look like it, but I dropped off the carb at my friend's garage for rebuilding, although I just told him to hold off for now. I'll copy the pictures for comparison. Does that carb have 2 adjustment screws on it?
I'm wondering if anyone has even heard of one with 1 screw? It looks like I have some kind of strange aftermarket replacement or a factory goof. If it is a goof, how did it run all these years? Although I sure am having problems with it now.
In the 80's there were "tamper proof" carbs that were set at the factory and had a cap over the idle mixture screws. I don't know what Ford had, but my Dad was a mechanic at a chevy dealership,(he still drove Fords though ) And the required fix was to remove the carb and knock out the plugs,and I believe he had a special socket to adjust the screws. maybe you have something like that and someone tampered with it ?
That diagram is for reference, only, and they accomplished what they set out to do by just showing one, along with the part numbers.
Each side of the carburetor requires an adjustment screw so that the air/fuel mixture can be adjusted for each throttle bore.
I've seen the plastic caps on Motorcraft carbs, but I've never seen one with only one mixture screw.
Any chance you could post some pics?
Wise men talk because they have something to say; fools talk because they have to say something.--Plato Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???
That's not an oil leakThat's SWEATfrom all thatHORSEPOWER!!