Posted by Tom Fleming on August 04, 2009 at 16:03:29 from (67.20.240.67):
In Reply to: F 14 fuel system posted by JLE on August 04, 2009 at 11:18:57:
JLE, my comments on setting the manifold may or may not apply to you. If you have a dual fuel manifold (ie. distillate and GAS), you will have a larger square area in the middle of the manifold with a lever sticking out of it. That is a butterfly valve to redirect the hot exhaust past the intake portion of the manifold. This in turn heats up the intake and the carb. If you are running distillate, absolutely necessary to vaporize it. Since I was running gas, no need for the extra heat, and it appeared to me to be boiling off the gas in the bowl after the tractor was shut down, and left till the next day. I can tell you that when I set the butterfly valve to the "cold" or "gas" setting, my problem went away.
If you don't have a dual fuel manifold, this is NOT your problem.
If you do, you want to check that the butterfly valve is shut, so that the exhaust does NOT flow past the intake portion of the manifold. May or may not be your issue, but it certainly helped me out.
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