My apologies if this is hidden in plain view; but I've searched in many places.
In the threads of low fuel pressure under various conditions (O320, carbreted, mech. fuel pump): I recall reading one comment that the older Vans supplied gascolators might be the problem, allowing air entry under certain conditions. The poster said he replaced his gacolator with a newer one or different type & problem went away.
Can anyone point me to the right thread (here or otherwise)?
Thanks in advance.