Entity Anonymous Digest spoke thus:
 
> I stand in amazement that any engineer at any level, would put the fuel filter
> AFTER the pump.
<blahblahblah>
 
Right, I assume you're talking about a mechanical pump.
It so happens that gasoline is very volatile. It vaporizes readily in the
slightest vacuum leaving you with a vapor lock.
Most people would prefer the pump breakdown sooner than a sudden vapor lock
on a hot day.
The serious solution is to install an electric fuel pump under the tank.

(problem does not apply to diesel)

-- Rachel
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