floats are empty - Impala Tech
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post #1 of 4 (permalink) Old 08-10-2014, 12:02 PM Thread Starter
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floats are empty

this 64 327 with original carter carb on it ,it is so hard to start when its cold ,when i take the top off the carb there is only a little gas in the bowl about 1/4 inch.Can the gas evaporate out of them? is it going back down the gas line,I also have a thin carb gasket,could that cause to much heat,,I use high test gas only........should i be using a insulator and a baffle

Last edited by you loose; 08-10-2014 at 12:21 PM.
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post #2 of 4 (permalink) Old 08-10-2014, 03:41 PM
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I have that problem when I let my 64 sit for a few days, the gas evaporates out of the bowl. It happens whether the carb gets super hot or not. I am sure it is at least partly due to modern fuels.

Right now, I just crank it for 10-15 seconds without touching the throttle. Pause, then crank again with a few pumps of the throttle and it starts up.

Another solution is to install an electric fuel pump back by the gas tank. The trick is to find a quiet one. Opinions seem to be all over the map on what is quiet, so I am thinking it is more about mounting technique. In any event, you would bypass or hollow out the mechanical fuel pump. Then just switching the ignition on and waiting a couple seconds before cranking would give time for the bowls to fill back up.



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post #3 of 4 (permalink) Old 08-10-2014, 04:47 PM Thread Starter
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thanks for your reply is the am i or do i need a baffle between the carb and manifold
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post #4 of 4 (permalink) Old 08-10-2014, 05:19 PM
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I have one of those baffle / spacer things, but have not yet installed it. But I was trying to point out, is that I have this problem more with the time sitting, so I think is evaporation, not boiling away.



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