return line to gas tank

mrvette mrvette at bellsouth.net
Mon Oct 19 23:18:33 GMT 1998


In fact the General does not do it that way,   there is a reservoir as you say,
but the return line is aimed rite at the pickup....I tried to recirculate the
fuel by a reverse system, feeding into the suction line, and it did not
work...engine ran ok, but pump was in obvious distress, listening to it run,  so
I put the return into the tank, as per normal, and have tolerated the problems
previously mentioned...GENE

Walter Sherwin wrote:
> 
> I think you may want to address two different aspects, when designing your
> TBI recirculating fuel system.  You want to create a replenishing reservoir
> (dam) around your in-tank fuel pump pickup point in order to prevent
> starvation during braking and cornering.  However, you should always keep
> the return line discharge as far away from the pump pickup point as
> possible.  In fact,  you should make sure that the return line extends to
> the floor area of the tank and discharges away from the pump pickup.  If you
> don't,  then you will have a lot of trouble with foaming, hot fuel, and
> vapor related issues.  When possible, it is always best to use an in-tank
> fuel pump with strainer sock.   OEM's often try to isolate the hot return
> fuel, from the rest of the bulk fuel, in order to improve evaporative
> emissions.  However, I would think that you would be more interested in
> cool, bubble free fuel.  Bye.................



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