If you use a mechanical shut off after an electric pump made for EFI you will
burn up the pump if you dead head it while there is any power applied.. They use
the fuel for cooling and the pump will stall then burnup.
Dave
"Waldron, James" wrote:
>
> Thanks to all for your replies.
>
> Engine has EFI. Tank is higher than the Fuel pump.
>
> I think I will confirm that even at a slightly positive pressure
> in the fuel tank, the pump does not pass fuel. If so, I'll use
> electrical cut-off to the pump as a fuel shut off. (Including,
> of course, a master electrical off switch).
>
> Then I'll check with an inspector and see if I need to add
> an additional on-off valve.
>
> Thanks,
> Jim.
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