Where to Find factory Carb Specs/Tolerances?

[briansz]

I'm hoping that somebody can point me towards a place where I can find a manual or website that gives me some 1bbl YFA carb specs. I'm talking things like float level and drop, dechoke clearance, bowl vent adjustment, fast idle cam clearances.

I own a factory service manual for my '83 Ranger, the Ford '83 Engine/Emission Diagnosis Manual, and the Ford 1983/1984 Carburetor and Fuel Charging Assembly Adjustments manual.

All of these are great in their own way but none include actual specs for the tolerances above, only diagrams and procedures. I think I am looking for an Engine Emissions Fact Book or relevant TSB/s. Any ideas?

No idea that this was like finding the Holy Grail or something until I decided to rebuild the freaking carb. I'm experiencing a hunting idle and transient lean condition when I let off the throttle (I have an air/fuel gauge on a heated O2 sensor that shows me this), hi-lo, hi-lo, hi-lo. It won't stall out, but just started running this way a couple days ago. When you get into the throttle it runs OK but a little leaner than I am used to seeing (still right between stoich and rich). Kind of a bear to drive in traffic.

I have four (yes four) fuel filters including two that are clear, so I can see that fuel delivery is not my issue, at least outside the carb.

Thanks for any hints/tips!

 

[shadetree]

Chilton's #8159. Check it out and see if that is what you need.shady

 

[briansz]

Nuts,

I had one of those once, think I may have lent it to the engine rebuilder and it never came home. I'll see what I can scare up for a used one and try it out, thanks.