Re: fuel pump stumper

[rll <rlipinski3@xxxxxxx>]

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> Date: Tue, 01 Nov 2005 21:50:34 -0800
> From: "Robert  neal zimmerman" <northwestweirdo@xxxxxxxxxxx>
> Subject: fuel pump stumper
>
>
>
> thius has been stumping me for several weeks.
>  How does that little needle and seat and float assembley keep all that
>  fuel pump pressure from gushing past the needle and seat?
>   Seems like it would just gush past . I mean I know the float level is
>   what holds the neeedle/seat closed but that doesnt seem enough!
>  Is there an internal loop in the fuel pump or some way that it idles?
>   I am referring here to the simple stock mechanical pump system
>   Neal Zimmerman, eugene oregon


Neal...list


4-5 pounds is usual fuel pressure number......your finger over the line 
can stop the flow.

The float pivot is a see-saw lever with a big mechanical advantage that 
can easily handle the pressure.

The six pack setup i was running did not like the 6-7 psi from the 
carter fuel pump.

i needed a regulator set at 5 psi to keep from pushing by the needle and 
seat of the holley floats.

the new fuel injection systems run 30-60 psi....different story.

rob in phx
65 sat

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