Every so often, this 1969 model 280 sputters, and even dies when driving in slow traffic, hitting red lights. Problems occur occasionally, never at high speeds, but most typically in warm weather, with the fuel tank almost full. Seems to appear it's less likely when half empty or below. When having cooled off for 20 - 30 minutes, it's back to normal.
Of course the CSV or WRD may be the culprit, or even the thermostat in the MFI, but at the same time the fuel return pipe by the flower pot sticks out as a source of trouble, perhaps being partly clogged up, since fuel level seems to affect operation. Does this sound logical or am I barking up the wrong tree?
Brgds, Anders