[columbiA]

Those AC type diaphragm fuel pumps on almost any vehicle-except old fords,are mounted low on the engine because they are better at pushing the fuel rather than sucking it from the tank.Where Henry placed the pump wasnt one of his better ideas. I think that having the pump mounted so high is only making the problem worse.Even with the standard fuel pump stand,there is very poor oiling for the FP linkage& with the axtra tall stand,I would think oiling is almost non existent.The push rod is very likely worn too short.I think its a good idea to have an electric pump-the type that can push the fuel thru the stock pump & use the electric to prime the carb when sitting for a long time & also for when vapour-lock occurs.Years ago I never had vaper-lock even when it was 105* F. Nowadays I even get vapor-lock with my model A,s if I stop for 15 min on a hot day to gas up.For the 1st block or so it will run crappy untit the cooler gas replaces the heat-soaked gas in the carb.