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glennpm · 10-23-2025, 04:00 PM

I'd suggest that you back both out to 1 turn and then adjust to get the highest vacuum reading with a gauge. If you find that they have to be bottomed out like you have them now, you may have a vacuum leak. You can find ways to do this safely

https://duckduckgo.com/?q=use+propan...t=brave&ia=web

10-23-2025, 04:00 PM	#3
glennpm Senior Member Join Date: Sep 2014 Location: Mid-Coast Maine Posts: 3,353	Re: Twin Carb "issues" I'd suggest that you back both out to 1 turn and then adjust to get the highest vacuum reading with a gauge. If you find that they have to be bottomed out like you have them now, you may have a vacuum leak. You can find ways to do this safely https://duckduckgo.com/?q=use+propan...t=brave&ia=web __________________ Archives of historical but relevant older articles: ------------- Hover mouse over the links below and click! ~~~~~~~~~~~~~~~~~--------------- Rumble Seat’s Notes Techno Source for the 1932 thru 1953 Flathead Ford