Mountaineerfan 44 Report post Posted April 14, 2022 I'm adjusting my Motorcraft 2100 that I just rebuilt. Looking at the specs page of the shop manual, it says that the carb I should have (302 auto) is a C9AF-A. I assume that sometime in the past 50 years the carb has been replaced, as the ID tag reads "D4PE-EC." Is there a big difference between these carbs? Can I use the settings for the float that are given in the shop manual for this carb? Quote Share this post Link to post Share on other sites
Boss429Dreamer 18 Report post Posted April 14, 2022 After a quick search on Mike's Carburetors website, I found the C9 float setting is 3/8" and the D4 is 7/16". I looked up the instructions on rebuild kits for both carb no.'s. That's a 1/16" difference so you may be ok with either. Quote Share this post Link to post Share on other sites
Mountaineerfan 44 Report post Posted April 14, 2022 Thanks! I didn't think there would be a huge difference, but wanted to make sure. Quote Share this post Link to post Share on other sites
