rodneybeauchamp Posted September 23, 2022 Share Posted September 23, 2022 (edited) Hi all, I’m having fun learning about automatic choke set up on a Rochester 4GC on a ‘63 Skylark. Have converted back to the automatic choke from a previous owners folly. Have set up carby to specs in the Delco Rochester information (three times now 😀😀😀😀😀) and I thought I had got it correct. Started easily and had to back off the high idle down to 625 as it was racing about 1100 to 1200 rpm. But it does not want to come off the second step of the fast idle cam unless you manually pull the choke valve plate open. The heat coil on the choke is new and working (tested with her hairdryer 😳😳😳) and is set so there is slight resistance when cold. Does not seem to be any binding of the linkages that operate it all, but frustrating that it doesn’t do as it’s told. Have looked at countless videos and blogs but still not getting it right. Gunna persist on this till I get it right as it should. Initial problem was difficult starting on the manual choke. At least it now starts….. so that part is good. pictures show where fast idle screw wants to stay and also where the choke vale was until I pushed it home! Rodney 😀😀😀😀😀😀 BTW ignition is good, points with dwell and timing correct. Edited September 23, 2022 by rodneybeauchamp Spelling (see edit history) Link to comment Share on other sites More sharing options...
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