Daves1940Buick56S Posted August 20, 2023 Share Posted August 20, 2023 This is my buddy Irv's 1934 Special. Previously we worked through a starvation problem that ultimately turned out to be a ton of crud in the gas tank and lines. With that out of the way, now the engine runs but refuses to idle. It has to be at 1000 rpm or more. The idle circuit in the EE-1 carb is basically out of the picture at this rpm. When it is running I am getting intermittent missing. The weirdest thing is that as choke is applied after I lower the idle speed the engine speeds up. Usually choking a hot engine results in rough running and stall. I have already overhauled the carb and distributor. Distro bench tested ok to 3000 rpm. New wires. Vac advance overhauled. Compression is good. I know the valves desperately need adjustment, but we haven't gotten that far yet. So I am thinking one of two things: My carb overhaul got trashed by additional crud as we were T/S the fuel issue, and/or a massive vacuum leak somewhere. This last is prompted by the strange choke behavior. Anyone want to weigh in before I pull the carb (again)? Cheers, Dave Link to comment Share on other sites More sharing options...
Marty Roth Posted August 20, 2023 Share Posted August 20, 2023 I "lean" toward a vacuum leak- seems like it is running lean, corrected by choke, and/or by higher revs 2 Link to comment Share on other sites More sharing options...
Oldtech Posted August 21, 2023 Share Posted August 21, 2023 Could be a vacuum leak but could be the idle circuit /jet is plugged. 2 Link to comment Share on other sites More sharing options...
Daves1940Buick56S Posted August 21, 2023 Author Share Posted August 21, 2023 Yeah. I can take the carb off pretty quickly and check it out. Probably do that later this week. Cheers, Dave 1 Link to comment Share on other sites More sharing options...
Daves1940Buick56S Posted November 24, 2023 Author Share Posted November 24, 2023 Just a followup. Finally got the carb pulled. It is completely plugged up. Very fine red powder everywhere, and lots of it. I have to overhaul it again. This time I am insisting on a modern gas filter. To heck with authentic appearance. 1 Link to comment Share on other sites More sharing options...
Buick35 Posted November 25, 2023 Share Posted November 25, 2023 Dose the fuel pump have the glass bowl type filter? My 35 has that plus another glass bowl type before the carb.and an in line filter by the gas tank. Always run non ethanol gas.So far so good. I installed a new accelerator pump a year ago and rebuilt my fuel pump.Runs good now. Mines a 41 series sedan,what's your friends? Link to comment Share on other sites More sharing options...
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