return line to gas tank

[James Weiler]

On Tue, 20 Oct 1998, Shannen Durphey wrote:

> I have the same problem on my 57 pickup, only worse (for me) because
> the tank is in the cab.  My solution is to put a small power steering
> cooler in the fuel return line.  Chevy cavaliers were some of the
> first GM cars that I know of with a "spring loaded" sending unit. 
> That way the pump stays in the fuel when the tank expands.
> Shannen
> 
two questions here. 1st is this where the greatest increase in heat 
occurs?  i.e. is most of the heat caused by the engine or is it the 
electric pump itself that is the problem?
2nd could you elaborate on this spring loaded sender thingy?
thanks
jw