Thread: Fuel Pump?
View Single Post
Old 04-29-2017, 06:05 PM
simplyconnected's Avatar
simplyconnected simplyconnected is offline
Slow Typist
Join Date: May 26 2009
Posts: 7,627
simplyconnected is on a distinguished road

Originally Posted by HighwayThunder View Post
...What I've noticed is that when that happens, the fuel filter will not fill, even with just the fuel pump on (refer to 2nd pic). My theory is that the unfilled part of the filter is a pressurized vapor keeping the filter from filling with liquid...

Your float bowls are vented to the carb throat. The floats only close-off supply when enough LIQUID gasoline lifts the floats. A constant flow of gasses will simply vent out past the needle valve as it remains open until the float closes it. - Dave
My latest project:
CLICK HERE to see my custom hydraulic roller 390 FE build.

"We've got to pause and ask ourselves: How much clean air do we need?"
--Lee Iacocca
Reply With Quote