Silvaire wrote:
There is never any pressure in the float bowl, it is vented to atmosphere.The closed float bowl valve isolates the fuel line between the pump and carburetor. As a result when the engine is shut down with the float bowl full, the gauge will show pressure until, very slowly, the valve or fuel pump allows line pressure to leak down – the shutoff valves aren’t totally perfect.
Makes perfect sense. Thanks for the clarification! Cheers.
For very cold Pa28-161 starts, at sea level, I’ve been told to pump 5 times, leave the primer open, and slowly close it after the engine starts.
Throttle as normal. It works.
