[Tigers] Bizarre Running Issue

[Doornbos, Daniel]

What about the fuel pump?  Electric right?  What if it's getting old and
doesn't like running when the fuel is running at low flow and most restricted
at idle but then the pump does fine when running with throttle open?

Also sounds like an electrical pump to me because of the time factor and
inconsistency.  Your carb is largely mechanical and time shouldn't be a factor
in the poor performance.  Yet electronic pumps as the contacts wear would be
more susceptible to this kind of problem.

dan