Re: Do weber 40 dcoe,s need a choke ?
Posted: Wed Jul 02, 2014 1:57 pm
Tim and Rohan,
Thanks - those are very interesting replies. The concept of a sucking vacuum compared to a venturi generated vacuum never occurred to me. Neither had the benefits of the downhill design of the Twin Cam inlet manifold. And letting a few accelerator pump shots evaporate for a bit while putting on the seat belt and other stuff is a neat idea.
I knew there was a good reason why I'd never opened my Weber manual before. A little knowledge is so dangerous!
My engine has always started very well, but I've definitely had occasions where the sometimes lengthy cranking needed to fill the carbs after a period of non-use is countered by a sudden worry that I've flooded it. No petrol or too much petrol, that is the question! I guess I should install an electric pump or primer bulb.
Again, many thanks.
Nick
Thanks - those are very interesting replies. The concept of a sucking vacuum compared to a venturi generated vacuum never occurred to me. Neither had the benefits of the downhill design of the Twin Cam inlet manifold. And letting a few accelerator pump shots evaporate for a bit while putting on the seat belt and other stuff is a neat idea.
I knew there was a good reason why I'd never opened my Weber manual before. A little knowledge is so dangerous!
My engine has always started very well, but I've definitely had occasions where the sometimes lengthy cranking needed to fill the carbs after a period of non-use is countered by a sudden worry that I've flooded it. No petrol or too much petrol, that is the question! I guess I should install an electric pump or primer bulb.
Again, many thanks.
Nick