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John..... ...ya gotta problem, don't be afraid to start a new question, instead of hiding it inside someone elses question even though your question is the same. And don't be afraid to use enuff words to describe your problem, we don't charge extra and it may even be helpful for diagnostic purposes. Everybody seems to mis-understand carburator adjustment. Each engine/carburator is just slightly different but the procedure is the same. Thats why they have those handy dandy tweek'ems, that everybody is just itching to tweek whenever they have an engine running problem. And most of the time, the engine running problem IS NOT a carb problem but is a SPARKIE problem. And carbs just don't SUDDENLY get outta adjustment (unless someones been tweekin'). Heres how I adjust the N-Ford M/S carb. Ford sez to adjust BOTH the downpointing MAINjet and the sidepointing IDLEjet to 1-turn as a starting point. I adjust the downpointing MAINjet to 1-1/2 turns and LEAVITT!!! I then adjust the sidepointing IDLEjet for maximum rpms, NOT smoothest running, MAX rpms, understand? Then I goose the throttle and iff'n it takes up rpms smoothly, its good, iff'n it stumbles, 1/8 turn more enrichment. Note: yer N-Ford idle spec is a SLOOOoooww 400rpms and is set by the behind the carb throttle setscrew. Remember: the IDLEmixture is BASSACKWARDS, out for lean, IN for ENRICH. My idlemix usually ends up about 3/8 turn..... ...HTH, Dell
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