Oftentimes with the F1's,A2's, and models with the larger gascolator mounted lower on the fire wall, a vapor lock is misinterpreted as the culprit when just plain old air gets into the system after carburetor work, fuel leak repairs and running the header tank out of fuel. Air can be purged from the fuel system by bleeding fuel at the input to the carburetor.
I have had it happen on more than 1 occasion so I know it to be true.
WW
D. Wayne Woollard CPBE
o--iii--(
